Vulkaanuitbarsting bij Canarische Eilanden #4

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Update 28/06 07:55 UTC
- At least the people of El Hierro must have had a good night sleep as the strength of the earthquakes decreased seriously the last 7 hours. But only the strong earthquakes were more or less silent at night.
- So far today IGN has listed 39 earthquakes since midnight, a little less than the preceding days, but still a high number.
- Harmonic Tremor has restarted strongly since 05:35 this morning, showing us that the volcanic process is still continuing strongly. As we have experienced the last couple of days, the current HT may refer to a new migration of the epicenters
- The strongest earthquake since midnight was a M2.8 earthquake. NO earthquakes since midnight have been marked as felt by the people. At ER we think that Felt or no felt indications are far from reality as most people do not indicate slight tremors anymore after having experienced stronger ones. Aftershocks in general are less documented. Only nations like Japan, USA and New Zealand are drilled to report whatever they have felt.
- The depth did not show a lot of difference since midnight with values in between 17.6 and 22.9 km
- The epicenter of the earthquakes since midnight remains the El Julan La Dehesa area of the island
- We certainly expect more earthquakes to come today as the process continues in full strength.
- What can change the process fundamentally ? Our readers should watch the following elements in the current process with more focus than the rest : Depth of the earthquakes (changes towards a depth of 15 km or less can be triggers of new events, sudden change in the strength of the earthquakes, the locations of the epicenters (these locations are important in relation to the conduits of the recent eruption)

twitter:

teideano twitterde op donderdag 28-06-2012 om 13:46:34 GPS Deformation at VALV station, the remotest one from the actual seismic swarm also reflects the activity. #volcano http://t.co/ocjlZWKK reageer retweet

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DISCLOSURE NOTICE INVOLCAN

In the attached image you can check the movement experienced by the GPS station located in Valverde. In the same motion can be seen clearly from the northeast, with an eastward shift of nearly 1.7 cm, and northward nearly 2.

Confirm and emphasize the horizontal and vertical displacements observed by GPS network Canaria (ITER + + GRAFCAN Nagoya University) operating Volcanic Canary Island Institute under the direction of Dr. Takeshi Sagiya (Professor of Nagoya University and Scientific Collaborator INVOLCAN)

These data confirm feformación a process of movement of magma underground, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with data from recent seismic activity.

The displacements recorded during these last days are real and much faster than those observed last year 2011

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Update 28/06 12:26 UTC
- The Oceanographic vessel Hesperides has been announced to arrive soon at the El Hierro waters. What the ship exactly will do is unknown (analyzing sea water looks evident to us) as the bathymetry will not have changed since the first eruption stopped a few months ago.
- Yesterday we have cut a big chunk from our main article. These parts are now saved in part 44 and 45 of the El Hierro volcano eruption history. The links to all the preceding parts can be found at the bottom of this page. We will soon cut another part of this page as it is reaching a critical size to be easily consulted by people with limited bandwidth like Colin.

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Update 28/06 – 21:50 UTC
- Everything looks rather normal today and people get used to the present conditions. Less strong earthquakes than yesterday bring a king of relief to the living conditions
- The process is however continuing just like the preceding days. IGN has listed 164 earthquakes so far, less than yesterday but still en enormous number.

Update 28/06 – 20:24 UTC
-Thanks to ER readers Sissel and Mafl who gave us both routing informations of the SAR aircraft and the Hesperides ship, we were able to see in the public domain the routing of both the aircraft and the ship.
Wat we earlier described as probably shipping related is not so sure anymore after gluing the 2 pictures together. It is of course normal that the authorities will not publish every move they are ordering in their research.
We also checked the NASA satellite image today, but it was to hazy to trace eventual discoloring . The common researched area is approx. 20 km to the south of La Restinga.
After some Ocean depth checking in Google earth, we found out that the submarine volcano cone were the plane and ship were circling is at a depth of 2000 meter (we know that that is not accurate, but it gives a clue of how deep we expect the volcano or seamount to be). Maybe todays flight and ship route were only meant to do some long planned research which has nothing to do with the current activity.
Update : As we were intrigued by this story, we remember an issue which occurred on October 10 2011, just before the sea at El Hierro started to color green. This is the text we wrote on October 10 (part 2 of the El Hierro story ) :
Following the Spanish Newspaper El Mundo, a small submarine eruption has taken place 7 km out of the coast. The eruption occurred at 1200 meter below sea level. The eruption took place in the Las Calmas sea to the south of the island at 10.43 local time (09:43 UTC). We expect an official statement soon.
The news comes from 4 boats presently navigating in the Las Calmas sea.
- The present conditions are however totally different than on October 10 (earthquake parameters). Another difference is that todays action took place at approx. 20 km out of the coast.

Nubes de hipocentros de la crisis sismo-volcánica en junio de 2012 en El Hierro

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DISCLOSURE NOTICE INVOLCAN

In the attached image you can check the hypocentral evolution of earthquakes in the island of El Hierro since last July 2011. The same can be checked as there are two periods of clear tendency to make them deeper, and the absence of shallow earthquakes in this phase.

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[bon]
The permanent GPS network INVOLCAN instrumental movements continued to show abnormal El Hierro

These ground deformation data "not perceptible to people," confirms a rise in magmatic reactivation under the island of El Hierro

The Institute of Volcanic Islands (INVOLCAN) reports that continue to be recorded anomalous horizontal and vertical displacements in El Hierro in the Canary GPS network operated by the INVOLCAN under the direction of Dr. Takeshi Sagiya, Professor of Nagoya University and Scientific Collaborator INVOLCAN.

During the last 4 days to confirm the registration of a horizontal shift to the Northeast (4.4 cm) and as an offset in the vertical (elevation of 3 cm) in the GPS station WNBF (http://www.seis.nagoya-u.ac.jp/sagiya/canary_gps/FRON.pdf) located in the City of La Frontera and a horizontal shift to the Northeast (4.5 cm) and a shift in the vertical (elevation of 4, 5 cm) in the GPS PINA located in the City of El Pinar (http://www.seis.nagoya-u.ac.jp/sagiya/canary_gps/PINA.pdf). By contrast, in the GPS VALVE, located in the building environment of the Cabildo of El Hierro (http://www.seis.nagoya-u.ac.jp/sagiya/canary_gps/VALV.pdf), no observed shift in the vertical, but horizontal displacement to the northeast (2.6 cm) over the last 4 days.

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded during the last 4 days are real and much faster than those observed last year 2011.

From January to June 2012 were recorded displacements of less importance, but still significant, the GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, to the southeast and elevation), El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

The Red Canary GPS is a network of 35 permanent geodetic instruments GPS stations whose ownership depend on different agencies and administrations but perform a joint commitment to contribute to the improvement and optimization of geodetic software for volcano monitoring in the Canary Islands and has the ability to detect any ground deformation associated with volcanic phenomena in depth. In the case of El Hierro, Canary GPS Network currently has 7 stations ITER differential GPS (2), Nagoya University (4) and GRAFCAN (1).

At present the data on the geochemistry INVOLCAN is getting applied to volcano monitoring of the volcano island of El Hierro is delimited to the registration of permanent instrumental network geochemistry in the Island of the Meridian with 5 stations geochemical ITER. Therefore, at present it is unknown which is the amount of carbon dioxide and emission levels of helium-3 that the emerged part of the volcano island of the iron being emitted to the atmosphere; geochemical parameters of interest to evaluate both the current upsurge in magmatic reactivation under the island of El Hierro.

The emission of carbon dioxide that is being registered in HIE01 geochemical station, located at the intersection of the three main volcano-structural El Hierro, does not reflect outliers moving average values ​​were recorded daily during the last 7 days of 4 grams carbon dioxide per square meter. Nor are occurring outliers emission of carbon dioxide in HIE06 geochemical station, located in the area of ​​the volcano sumital Tanganasoga, whose record of daily moving average values ​​over the last 7 days is 0.8 grams carbon dioxide per square meter. In both stations are not being detected geochemical emissions of hydrogen sulfide.

These results have been obtained thanks to MAKAVOL project "Capacity Building of R & D + i + d to contribute to the reduction of Volcanic Risk in Macaronesia (MAC/3/C161)" which is being co-funded by the program Transnational Cooperation European Union Madeira-Canary-Azores (MAC 2007-2013), and the collaboration of the Research Center for Seismology, Volcanology and Disaster Mitigation, University of Tokyo (Japan), GRAFCAN (Canary Islands Government) and as of the Island Councils of Tenerife and El Hierro and the municipalities of La Frontera and El Pinar.

The Institute of Volcanic Islands (INVOLCAN) or National Center for Volcanology is an institution demanded unanimously by the Senate (2005), Parliament of the Canary Islands (2006) and House of Representatives (2009) which calls for an urgent and pressing to the General Administration State and the Canary Islands and the Island Councils to the joint commitment of all human and technical resources that various intended for scientific management of volcanic risk in Spain (say Canaries, the only volcanically active region volcanic country risk) without incurring the loss of ownership of their resources and in order to ensure effective coordination and efficient to reduce volcanic risk in the Canaries. To date, the Cabildo Insular de Tenerife is the only administration that has been involved with this unanimous decision of the legislative chambers in this country.

From INVOLCAN is recalled that the official information on the level of alert to adverse volcanological phenomena which is output from the communications of the Special Plan of Civil Protection and Emergency Response for Volcanic Risk in the Canary Islands (PEVOLCA) .

Caption
HIE06 geochemical station located in the area of ​​the volcano sumital Tanganasoga and which has the emission of carbon dioxide and hydrogen sulfide as well as numerous meteorological variables.

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DISCLOSURE NOTICE INVOLCAN

During the last 4 days to confirm the registration of a horizontal shift to the Northeast (4.4 cm) and as an offset in the vertical (elevation of 3 cm) in the GPS station WNBF

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded during the last 4 days are real and much faster than those observed last year 2011.

From January to June 2012 were recorded displacements of less importance, but still significant, the GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, to the southeast and elevation), El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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[bron]
By contrast, in the GPS VALVE, located in the building environment of the Cabildo of El Hierro is not observed in the vertical displacement, but the horizontal displacement to the northeast (2.6 cm) during the last 4 days .

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded during the last 4 days are real and much faster than those observed last year 2011.

From January to June 2012 were recorded displacements of less importance, but still significant, the GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, to the southeast and elevation), El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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[bron]
During the last 4 days to confirm the registration of a horizontal shift to the Northeast (4.5 cm) and a shift in the vertical (elevation of 4.5 cm) in the GPS PINA located in the City of El Pinar.

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded during the last 4 days are real and much faster than those observed last year 2011.

From January to June 2012 were recorded displacements of less importance, but still significant, the GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, to the southeast and elevation), El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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Update 29/06 – 13:43 UTC
- 105 earthquakes so far today ! The weakening of the process has been reversed the last couple of hours (stronger).
- Since 12:41 UTC, harmonic tremor and earthquakes started to pick-up again.

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Since last June 24 recorded a horizontal displacement to the north (5.5 cm) and as an offset in the vertical (elevation of 6.0 cm) in SABI GPS station, located in the town of Sabinosa.

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded since June 24 are real and much more rapid than those seen last year 2011.

From January to early June 2012 significant shifts were occurring but minor GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, southeast and elevation), in El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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In the attached image you can see the seímos of more than 2.5 degrees occurred on the island of El Hierro from last year to yesterday at 23.59 hours. As you can see, the process in which we are immersed releasing a very high energy. From the last 25 there were at least 353 earthquakes with this condition (magnitudes greater than 2.5).

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INVOLCAN DISCLOSURE NOTICE: GPS REST

Since last June 24 there was an eastward horizontal displacement (5.2 cm) and as an offset in the vertical (elevation of 4.66 cm) in REST GPS station located in the village of La Restinga.

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded since June 24 are real and much more rapid than those seen last year 2011.

From January to early June 2012 significant shifts were occurring but minor GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, southeast and elevation), in El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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INVOLCAN DISCLOSURE NOTICE: GPS SABI

Since last June 24 recorded a horizontal displacement to the north (6.6 cm) and as an offset in the vertical (elevation of 7.4 cm) in SABI GPS station, located in the town of Sabinosa.

These deformation data "not perceptible to people," confirms a process of movement of magma beneath the island of El Hierro, and the source responsible for this deformation is in the central-western part of the island of El Hierro in conjunction with the recent seismic activity data. The movements recorded since June 24 are real and much more rapid than those seen last year 2011.

From January to early June 2012 significant shifts were occurring but minor GPS stations located in Valverde (VALVE, east), La Frontera (WNBF, shootings) in the Restinga (REST, southeast and elevation), in El Pinar (PINA, to the east) and Sabinosa (SABI, began to move slightly to the north).

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Update 02/07 13:09 UTC
- Another strong M3.6 earthquake just occurred at 12:51 UTC a little to the south of the lighthouse. The depth was measured at 18 km. This earthquake was (of course) felt in parts of the island.
- Seismicity started to increase approx. 20 minutes earlier

twitter:

teideano twitterde op dinsdag 03-07-2012 om 10:18:24 Bumpy ride at El Hierro tonight....up to 4,4 quakes, deformation now turning to deflation, making it even more weird. http://t.co/4lIeDVWi reageer retweet

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Update 03/07 07:34 UTC
- Deformation statistics from the University of Nagoya in cooperation with Involcan are showing a strong decrease in Ultra Rapid values in the stations of Sabinosa, Pinar, Frontera and La Restinga. The numbers are showing a reverse effect than last nights earthquakes would have assumed.
- 71 earthquakes so far today, the strongest one being a M4.2 at 2:31
- hypocenter or focal depth range remains as it was, at 18 to 21 km in average. No shallow quakes anymore.
- activity has calmed a lot the last several hours, but earthquakes still occur at normal (whats normal ?) values of M+2
- the real number of volcanic earthquakes (including the weak ones) is far greater than the 71 mentioned above. How to see that ? Take a quick look at the CHIE graph and count the vertical out-swaying lines, and thats only a portion of it!

twitter:

teideano twitterde op dinsdag 03-07-2012 om 13:37:55 #volcano Evolution of seismicity and CO2 degassing at El Hierro. Seems that no gas, no eruption.... http://t.co/v6BcvZdz reageer retweet

twitter:

teideano twitterde op dinsdag 03-07-2012 om 16:35:22 @eruptionsblog @pabloj_gonzalez @Suw @rschott @Lumifg Recorded at El Hierro. IMPRESSIVE some hours ago. reageer retweet

DSCN3140

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Update 03/07 15:41 UTC very interesting Press Conference
IGN expects new strong earthquakes (up to M4.5-M4.6) for the next 7 days. This has been said at a press conference today. Pevolca does not have the intention the meet soon again if only these earthquakes are continuing as this is expected from now on. Pevolca asks the population of El Hierro to be ready for whatever eventual urgent communication which Pevolca may decide. The Grupo de Emergencias y Salvamento (GES) will be at El Hierro to reinforce the local groups, this to be prepared for whatever crisis to come.
María José Blanco (IGN) has said that an eventual eruption at the present seismic center (Las Calmas sea south of the lighthouse), where depths of the hypocenters are still measured at 20 km, can be excluded at this moment. She said that it also lasted quite some time last time before an eruption took place. The epicenters of the earthquakes had to migrate more than 20 km to the south before the magma found his way up. María José Blanco also said that an eruption on land can be excluded at the moment but that IGN follows up the situation very consciously as all the events are going much quicker than during last years eruption. (compiled by ER from a number of local press reports like Diario El Hierro)
- Already 123 earthquakes so far today

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INVOLCAN DISCLOSURE NOTICE: EVOLUTION GPS

After exhaustive analysis during the last hours of GPS data, Dr. Takeshi Sagiya, Professor of Nagoya University and Scientific Collaborator INVOLCAN, informed the group that the fall INVOLCAN observed in the GPS antenna of El Hierro, also been observed in other antennas located outside the island of Meridian, which coupled with little or no variation in the horizontal component leading to suggest that the data reflected by the GPS is affected by external effects, which could be related to tropospheric interference.

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Very important Update 03/07 – 23:55 UTC
A report from the GSC (Communication department of Canary Islands) has revealed that a helicopter survey unit has noticed a (small) jacuzzi and a white stain at coordinates 27º 4.573” N y 18º03.761” W in the Las Calmas sea approx. 180 meter out of the coast. The images which have been taken by the helicopter will now be analyzed by the IGN scientists. A new flight above the zone is planned for tomorrow.
- Nobody is sure at this moment whether this picture really reveals a new vent or shows just some currents. The similarity is at least what we used to see as colors and as water agitation during the 2011 eruption.
Jon Frimann (Icelandic volcanoes blog) writes an interesting comment which we share : Dike intrusions can happen with and without harmonic tremor. Dike intrusions with harmonic tremor happens mostly at places where conduct is well established. That is not the case now. So I would not trust any signs for harmonic tremors just yet. Harmonic tremor pulse might be seen few hours before the eruption starts. Given my experience and what I did see during Eyjafjallajökull volcano eruption in the year 2010. Given the amount of earthquake activity. I am assuming that some of the magma has reached less depth in the crust without making many earthquakes at present time. The reason for that is magma has easier time to make the rock soft at less depth. Soft rock means few to no earthquakes. How this plays out is all big question that currently nobody has an answer to at the moment. (Thanks to Ian Carson for informing us)
- Below another picture of the detected stain and small jacuzzi (the picture above in natural colors – in the picture below we have increased contrast and sunlight) (All pictures courtesy GES).
- Why all these maps below ? : we tried to use the coordinates as given in all the media, but we could not trace the location which coincides with the picture. Finally we decided to scan the southern coast and we tried to detect the trails along the coast. Once that being done, the google maps matched with the picture.

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[bron]
Curious? Coincidence? Continues the trend of the mayoreas "lashes" seismic, ie, events of magnitude greater, occur with the tide in their maximum or minimum ..... The gravitational pull on the magma seems to have any effect. The luninosidad lunar (white), continues to increase, the crescent moon for "lunatics".

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Update 04/07 – 09:37 UTC
- Joke will try to take a few some zoom pictures from the so called detected emission spot at noon.
- In the meantime, villagers are discussing the new emission location and what they can see on the pictures. Joke reports by SMS that the local fisherman do not believe in a new emission spot but are calling it a natural phenomena, ocean floor sea (sorry if this word does not exist in English as we have no other way to describe it). The phenomena is when the current are stirred over the ocean floor and are generating white foam waves at the surface.

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Update 04/07 – 11:58 UTC
- Joke reports that a GES Helicopter with divers on board has left Frontera a short-while ago. IGN and Pevolca are taking no risk this time and do all they can to clarify the situation.
- Also the IGN GPS stations are showing all a strong vertical uplift today.
- Earthquake epicenters are still concentrated to the south of the lighthouse area, no change in depths.

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Urgent Note Canarias7 the web:
13:39 URGENT Unofficial sources claim that the helicopter has flown on Wednesday Mar de Las Calmas has not detected and burjeo spot or area. On the night of Tuesday circulated an image CECOES suggesting the existence of volcanic activity, reports Rosa Rodriguez.
(Humberto)

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Update 05/07 – 07:20 UTC
- 104 earthquakes were listed by IGN yesterday
- 18 earthquakes so far today (the smallest number since the start of the swarm on June 24)
- NO harmonic tremor detected
- El Hierro has lived a calm night with a max. earthquake of Magnitude 2.6.
- NO change in hypocenter depths
- Almost NO change in the epicenter locations (west of the lighthouse) on the exception of 1 earthquake which occurred at a depth of 19.2 km (05:41 M1.8) on the beach a few hundred meter next the location were the GES heli had spotted some activity the day before yesterday (providing that the IGN data were accurate), but there is 99% chance that this is a coincidence.
- No new deformation numbers yet

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Update 05/07 12:04 UTC
- The number of earthquakes is quickly running up due to the latest swarm (update 10:04)
- A lot of the earthquakes are now happening in the 16 to 18 km layer, which, if prolonged can throw another light on this eruption and, more to the east could reach the lava tubes of the 2011 eruption. The next 12 hours will certainly give us a better view.
- deformation is down in most of the stations (IGN deformation stats), Involcan numbers are unsure (when will BOTH organizations finally show faint vertical lines in order to read the date of the markings!!)

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Update 06/07 14:28 UTC
- A new Pevolca reports confirms what we have written earlier today and yesterday. Additionally IGN has reported that also the islands of Tenerife and La Palma are moving horizontally. The El Hierro activity cannot be the only reason for this horizontal deformation. IGN also sampled air and water in the earthquake epicenter area and has found no abnormal values.

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Update 08/07 – 16:47 UTC
Richard Wilson, a geologist who is specialized in volcano seismicity and who is also the main contributor to our “(almost) daily Worldwide Volcano Acitivity report“, describes the El Hierro situation as follows:
Apparently a new round of seismicity at El Hierro (Spain) during the past 24-48 hours. This is typical of intrusive activity, but not eruptive activity. Typically eruptive seismicity is sustained and builds to a crescendo (and occurs at much shallower depth) before material is erupted at the surface. Also, the up-down-up pattern in GPS data also suggests lateral spreading and intrusion rather than an eruptive pattern, which would also build and build and build. Now, that being said, this is my interpretation, with very limited resources as far as instrumental data and does not preclude a sudden shallowing and intensification of seismicity and deformation (and,…finally eruption!). All instrumental signs of intrusive activity beneath a volcano must be watched vigilantly while they are in-progress in order to “catch” any of these “signs” of a forthcoming eruption. This has been what is so intriguing/challenging for me to watch volcanoes since I was in my 20s (I’m 52 years old now!).

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The INVOLCAN detected higher levels of emission of helium-3 in El Hierro one week before the recent seismic-strain pulse

Helium-3 is the main "fingerprint" that is available to detect subsurface magmatic activity in the

The Institute of Volcanic Islands (INVOLCAN) reports that higher levels of emission of helium-3 in El Hierro occurred on 16 June 2012, one week prior to this recent spike or pulse seismic-strain on the island of Meridian with more than 650 earthquakes above magnitude 2.5 in Richter scale and deformations that reflect shifts in the horizontal and vertical (elevation) of 8.5 and 8.2 cm, respectively, in one of the GPS stations INVOLCAN ( SABI and JULA) since last June 24, 2012.

Monitoring and measurement of emission levels of helium-3 is performed periodically at four observation points (groundwater) from El Hierro wells related to The Patterns, Frontera, San Simon and the gallery since it is impossible Tacorón existing technology at present for realizing a continuous record of this important parameter geochemical.

The highest levels of emission of helium-3 in El Hierro have been detected in the well of St. Simon last June 16, 2012 causing oil slicks to values ​​of 8.5 Ra, Ra being the ratio of isotopic ratios helio-3/helio -4 in the air. This record not only confirms the process of this recent rally magmatic or seismic-strain pulse in El Hierro but also could be detected one week before commencement.

These results have been obtained through close collaboration between scientists INVOLCAN and Geochemical Research Center, University of Tokyo, where are these analytical determinations using mass spectrometers with high resolution, given the lack of this type of specific instrumentation in Spain, as well as project MAKAVOL "Capacity Building of R & D + i + d to contribute to the reduction of Volcanic Risk in Macaronesia (MAC/3/C161)" which is being co- funded transnational cooperation program of the European Union Madeira-Canary-Azores (MAC 2007-2013).

The Institute of Volcanic Islands (INVOLCAN) or National Center for Volcanology is an institution demanded unanimously by the Senate (2005), Parliament of the Canary Islands (2006) and House of Representatives (2009) which calls for an urgent and pressing to the General Administration State and the Canary Islands and the Island Councils to the joint commitment of all human and technical resources that various intended for scientific management of volcanic risk in Spain (say Canaries, the only volcanically active region volcanic country risk) without incurring the loss of ownership of their resources and in order to ensure effective coordination and efficient to reduce volcanic risk in the Canaries. To date, the Cabildo Insular de Tenerife is the only administration that has been involved with this unanimous decision of the legislative chambers in this country.

From INVOLCAN is recalled that the official information on the level of alert to adverse volcanological phenomena which is output from the communications of the Special Plan of Civil Protection and Emergency Response for Volcanic Risk in the Canary Islands (PEVOLCA) .

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SPECIAL NOTE AVCAN 038 - 11/07/2012 - 11:15 pm Peninsula. - EVOLUTION AND MONITORING EARTHQUAKE SWARM-VOLCANIC ISLAND OF HIERRO.

The seismicity map updated today, now carry 2 earthquakes located by the IGN in the spectrogram are not located many more .... and yesterday we had 70 that draw more or less the area of the swarm, especially yesterday's gains as yesterday afternoon and seismic activity is concentrated in the coastal area between the lighthouse and Julan Orchilla. GPS data and INVOLCAN IGN indicate that the vertical deformation somewhat low, not so the horizontal, which appears to increase their rate of deformation .. Enrique)

http://www.avcan.org/mapas/AVCAN3749.jpg?d=1341997116

Earthquake of July 11 from 00:00 to 06:00 h UTC - Light Blue (2)

Earthquake of July 10 - Yellow (70)

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[bron AVCAN]
Events for absolute share of the tide. This is to check how seismic events occur when the tides reach their ends, ie, high tide or low tide. In this graph, therefore, does not distinguish between high or low tides. The Y, is 100 for both high tide or low and 0 for the "mean tide". For each tidal height, we calculated the extent of their corresponding tide and it calculates the percentage on it without distinguishing whether low or high. It can be seen, the greater concentration of points representing events to the value 100, which means that high tides and low tides in more seismic activity in the "mean tide" and the fact that the most significant events in general and at this stage of the crisis, also occur in high or low tides.

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To complement the above graph, which has generated some questions to be hardly understandable. I think the following is quite explicit and reflects: The number of seismic events and the energy accumulated by absolute share of the tide. Remember, that percentage represents 0 in the "Half Tide" and 100 represents the high tide or low tide. In summary, the graph, accounts of what happens to the mean tide, as opposed to extreme values. For its calculation, computed the actual extent of each trip and we calculated the absolute percentage of tidal height on the amplitude, so that (insist), the value 0 of the abscissa represents the mean tide and the value 100 represents tidal peaks of both the high tide as low tide. Not the subject of this graph, draw conclusions, but to present a statistical study.

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Julio says:
July 11, 2012 at 12:33 pm
There have been strong winds at the Island for the past days as you can see in Joke’s Photographs. This results in an increase tremor line in the graphs.

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Progression of the average depths of the hypocentres of seismic events per hour, since the beginning of the crisis. Although there are fewer earthquakes per hour, the latest trend appears to be rising with some shallow earthquakes. (JR)

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SPECIAL NOTE AVCAN 043 - 07/15/2012 -22:15 h peninsular. - EVOLUTION AND MONITORING EARTHQUAKE SWARM-VOLCANIC ISLAND ON El Hierro.

The seismicity map updated today, now carry 2 earthquakes located by IGN, although in the spectrogram are located but not enough, yesterday we had 10 between the lighthouse area Orchilla south on the Mar de las Calmas. The small rally yesterday morning was further east in the sea area near the coast between the lighthouse and Julan Orchilla. The truth is that the last of yesterday and today have an alignment NW - SE and NS, in addition to other alignments of other days.

The truth is that it should be noted that it was lightning fast with this phenomenon of volcanic reactivation, with a plume of horse, something has put the brake, but far from stopped, be an earthquake of 3.4 shows yesterday or the deformations are rising, especially in the vertical, albeit more slowly.

The truth is that it happens, that seismic activity in the volcanic islands can last for years before finding a way to the surface to form a mouth eruption. In the recent past Canarian volcanism, this has already happened, as was the case of Chinyero or San Juan or the actual eruption of Timanfaya, this specifically, according to the writings of the priest of Yaiza, had in pulses or periods of moderate seismicity strong that when he was stopped by that opened a new mouth, which threw up a time and then stop everything and spend some quiet time until after a month or less started a new seismic pulses that opened up another mouth other and after a while expelling material was returning to stop and so on several times, we shot 6 years is repeating this behavior (Enrique)

quote:

Update 16/07 – 07:38 UTC
- There were finally 2 earthquakes at El Hierro yesterday : a M2,1 and a M1.7 at 21 and 22 km depth.
- 2 earthquakes so far today:
03:01:09 Depth 20 km 2.0mbLg SW EL PINAR
05:42:25 Depth 21 km 1.8mbLg SW FRONTERA
- Vertical deformations are down from 1 to 2 cm (one of the biggest deflations so far).
- We expect Pevolca to announce a further normalization of the situation and to change the Yellow alerts on some parts of the island soon to Green again.

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Update 17/07 – 08:07 UTC
-A new strong earthquake occurred 21 minutes ago. IGN has not listed this earthquake yet. Based on what we see on CHIE we estimate the quake to be in the M3 to M3.5 range.

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Update 19/07 – 08:30 UTC
- NO earthquakes so far today
- The uplifting from PINA and FRON as reported yesterday and the day before yesterday has reversed into a strong decrease of approx. 0.5 to 1 cm
- The conclusion of the current non-events is that the new swarm episode seems to be completely over

quote:

Update 07/08 – 10:21 UTC
An article in Diario El Hierro reports about some findings of the University of La Laguna. The professor indicates that eruption material from El Hierro is among the strongest eruption radioactive material known so far. Click here to read this (Spanish) article.
- Pevolca has changed the alertt level of the south western tip of the island again to green. It was changed into Yellow after the many strong earthquakes. Yellow is maintained at the vent in the Las Calmas sea.

Los fondos marinos de El Hierro vuelven a recuperar su belleza

quote:

Important Update 13/08 – 16:26 UTC
After a period of relative weak to very weak seismic activity, the magma below El Hierro looks to start another episode as we cannot relate the 6 earthquakes today as stress phenomena. The epicenter of the earthquakes were in between 10 and 14 km, which means that if seismicity today is generated by magma, we have a totally different situation than at the end of June when we constantly has epicenters below 20 km. The location of the epicenters today where also different as the majority was located in the El Golfo Bay and a few others below the island and in the Las Calmas sea.
6 earthquakes so far today is not revolutionary, but at least interesting to give it a close watch
- The seismogram at CHIE does not confirm an increase of the activity, but this can change swiftly as we know from the recent past
- The deformation data from Involcan and the Nogoya University also show an uplifting from a little less than a cm in both PINA and FRON (Ultra Rapid and we trust that the GPS data are still refreshed as it is hard to see on the graph.
- If deformation data and seismicity would continue to increase the following hours and days, we might have a new phase in the El Hierro volcano activity

quote:

Update 14/08 07:50 UTC
After the update with 6 earthquakes yesterday, everything went silent again.
Deformation data (vertical) have stabilized again.

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Important Update 15/08 – 08:14 UTC
- We have to add 5 new earthquakes in only 2 hours time. As written yesterday and earlier today, these are certainly no stress related earthquakes. Not powerful at all, but they have a trending which puts some action (magma action ?) at a depth of 10 to 12 km. These quakes are not powerful enough to be dangerous at the short term as well as the depth is still deep enough to not be alarmed, but something is going on down there !
The epicenter locations of these earthquakes are almost all of them in the Sabinosa part of the El Golfo bay
The latest depth of 6 km may be updated later today as this happened often in the past.

quote:

Important Update 15/08 14:50 UTC
- Another 5 earthquakes have to be added by the already 6 mentioned earlier on, bringing the total to 11. Depth 11 to 12 km and the depth of the 06:46 quake still stands at 6 km ! Epicenters : close to Sabinosa or in the El Golfo Bay just north of Sabinosa.

quote:

Very important Update 16/08 – 08:19 UTC – A new earthquake swarm has started below El Hierro
- For the 3th day in a row the number of earthquakes are fundamentally increasing below El Hierro. Although not official, we think that speaking of a new earthquake swarm is the only right way of describing the current set of earthquakes.
- No less than 26 earthquakes occurred this morning (from midnight UTC until 07:00 AM)
- The majority of the earthquakes are still weak, but the M2.2 from early this morning was the strongest in a while and the Magnitude pattern tends to become stronger every couple of hours.
- The CHIE seismogram is not showing a lot of action, but the M2.2 can well be seen. CHIE is not the best station at the moment to show the seismic events at his best.
- The depth is continuing around the 10 to 12 km which is a complete difference from the July swarm, but still far away from an eruption. More seismicity at lesser depths is needed to create a pre-eruptive condition. Newt to seismicity, we have also the gas analysis, the deformation, etc who will have to confirm if the present swarm will end in an eruption. The magma pressure should be powerful enough to find his way up.
- We do not know how many University of Nagoya GPS stations are still working, but we know for sure that FRON station still works and shows a vertical increase of many mm, which sounds normal after the present set of increasing earthquakes in the area.
- A reason for concern at this time should be the location of the seismicity (El Golfo Bay and Sabinosa area – including the cliffs south of Sabinosa). Landslides and rockfall may become dangerous at Magnitudes from M4 and up.

quote:

Update 16/08 13:37 UTC
- 5 more earthquakes in between M0.6 and M1.2 and at depths in between 10 and &é km

Image courtesy Avcan
Update 16/08 11:53 UTC
- We have to continue bringing updates on the seismicity below the island.
4 more earthquakes bringing the total on 32 today. Magnitudes from M1.0 until M1.5. Depths 10-11 km. IGN has updated his list up to 08:30 UTC
- At right a small map with the epicenters of a number of the latest earthquakes.

quote:

Update 16/08 – 23:31 UTC
- So far IGN has listed 45 earthquakes today. We see on the seismogram that there are definitely some more quakes later on. They will probably be listed tomorrow morning.
Update 16/08 – 19:42 UTC
- 4 more earthquakes from M0.6 to M1.4 at a depth of 10 to 12 km (15:29 to 16:18 UTC)
Update 16/08 – 16:25 UTC
- 3 more earthquakes from M0.9 to M1.1 at a depth of 11 to 12 km (12:25 to 13:47 UTC)
- Maybe IGN could take a few courses in press reporting at GNS Science New Zealand. If an important new swarm starts, like the one today (even with weak earthquakes), an experienced volcanologist may write 5 sentences in explaining what the opinion of the organization is. Why does a body like Pevolca is to be used for volcanology ? If i would live in Sabinosa, i would love to hear a few words if continuous quakes are occurring below my house.

Update 17/08 07:37 UTC
- A little bit to our surprise, there were no more earthquakes listed yesterday after 18:11. This brings yesterdays total on 45.
- The quakes continued though after midnight and so far today we have noticed 7 volcanic earthquakes (see list below). Epicenters are still in the same perimeter.
- Vertical deformation both at El Pinar and Frontera stations is slightly higher which corresponds with the many, mostly weak earthquakes in the El Golfo area. The SABI station (Sabinosa) of the University of Nagoya does not seem to report data anymore, a pity as almost all the current action takes place in that sector.

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Update 20/08 – 13:12 UTC
We are currently in the midst of a slightly changing seismicity pattern. Why ? For the past several days we have seen a lot of (mostly weak) earthquakes at a depth from 10 to 13 km, but since yesterday we see more 20 km hypocenters. The deeper quakes are mostly more powerful. The deeper earthquakes are still located at the western tip of the island (June / July swarm)
These are the last 3 earthquakes :

quote:

1162694 28/08/2012 06:13:52 27.7230 -18.0605 25 1.6 mbLg SW FRONTERA.IHI [+]
1162684 28/08/2012 03:06:53 27.7537 -18.0884 10 1.5 mbLg W FRONTERA.IHI [+]
1162681 27/08/2012 23:23:26 27.7683 -18.0864 10 2.2 mbLg W FRONTERA.IHI [+]

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Update 02/09 – 17:33 UTC
- Joke tells us that people living in Sabinosa and in other parts of the El Golfo bay are complaining about strange smells. This goes onfor at least a couple of weeks. ITER and IGN are told to take samples regularly, but the biggest complaint from the population is that nobody tells anything. Those following the events from the beginning do know that this comes not as a surprise to us. Most of the shallow 9-11 km deep quakes are centering in the El Golfo and Sabinosa area.

quote:

aantal bevingen
1165027 12/09/2012 03:26:01 27.7183 -18.0725 19 1.9 mbLg SW FRONTERA.IHI [+]
1165014 12/09/2012 02:53:40 27.7716 -18.0928 11 2.0 mbLg W FRONTERA.IHI [+]
1164986 11/09/2012 14:58:39 27.7914 -18.0918 11 1.9 mbLg NW FRONTERA.IHI [+]
1164985 11/09/2012 14:56:54 27.7630 -18.0891 11 1.7 mbLg W FRONTERA.IHI [+]
1164983 11/09/2012 14:50:53 27.7347 -18.0964 20 1.8 mbLg W FRONTERA.IHI [+]
1164978 11/09/2012 14:42:27 27.7694 -18.0891 11 1.8 mbLg W FRONTERA.IHI [+]
1164973 11/09/2012 14:34:18 27.7661 -18.0953 11 1.7 mbLg W FRONTERA.IHI [+]
1164906 11/09/2012 10:16:16 27.7629 -18.0885 11 2.0 mbLg W FRONTERA.IHI [+]
1164782 10/09/2012 23:31:00 27.7863 -18.0837 9 1.6 mbLg NW FRONTERA.IHI [+]
1164781 10/09/2012 23:29:35 27.7740 -18.0908 11 1.7 mbLg W FRONTERA.IHI [+]
1164779 10/09/2012 21:48:19 28.2752 -16.4932 1.6 mbLg NW FASNIA.ITF [+]
1164765 10/09/2012 20:36:31 27.7943 -18.1043 10 1.6 mbLg NW FRONTERA.IHI [+]
1164731 10/09/2012 12:39:54 27.7613 -18.0849 10 2.1 mbLg W FRONTERA.IHI [+]
1164730 10/09/2012 12:13:46 27.7662 -18.0870 10 2.1 mbLg W FRONTERA.IHI [+]

quote:

Update 12/09 07:45 UTC
- 5 earthquakes have been listed by IGN so far today. One earthquake was at a depth of only 6 km, not yet at a potential eruption level, but this is already the 3th shallower earthquake in 2 days.
- Deformations are still up and down with approx. the same values. Yesterday 2 cm deflating, today 2 cm inflating as one can see at the Prof. Sagiya graph below

Update 11/09 23:55 UTC
- And 5 more at the end of the day, which makes a total of 21 earthquakes today

quote:

[bron]
1165406 14/09/2012 13:43:37 27.7520 -18.0350 19 2.2 mbLg W FRONTERA.IHI [+]
1165403 14/09/2012 13:03:45 27.7397 -18.0385 18 1.9 mbLg SW FRONTERA.IHI [+]
1165402 14/09/2012 13:01:28 27.7417 -18.0469 18 2.0 mbLg SW FRONTERA.IHI [+]
1165401 14/09/2012 12:43:55 27.7466 -18.0383 17 2.2 mbLg W FRONTERA.IHI [+]
1165400 14/09/2012 12:15:03 27.7557 -18.0347 17 2.1 mbLg W FRONTERA.IHI [+]
1165364 14/09/2012 11:04:51 27.7509 -18.0232 19 2.3 mbLg W FRONTERA.IHI [+]
1165349 14/09/2012 10:36:55 27.7235 -18.0362 18 1.6 mbLg SW FRONTERA.IHI [+]
1165346 14/09/2012 10:32:26 27.7627 -18.0832 10 1.7 mbLg W FRONTERA.IHI [+]
1165347 14/09/2012 10:30:58 27.7429 -18.0346 19 1.6 mbLg SW FRONTERA.IHI [+]
1165344 14/09/2012 10:26:33 27.7654 -18.0815 10 Sentido 2.6 mbLg W FRONTERA.IHI [+]
1165345 14/09/2012 10:10:30 27.7449 -18.0299 20 2.4 mbLg SW FRONTERA.IHI [+]
1165348 14/09/2012 10:10:16 27.7510 -18.0335 20 2.2 mbLg W FRONTERA.IHI [+]
1165335 14/09/2012 09:55:03 27.7879 -18.0844 8 1.5 mbLg NW FRONTERA.IHI [+]
1165330 14/09/2012 09:05:29 27.7709 -18.0838 10 1.9 mbLg W FRONTERA.IHI [+]

twitter:

teideano twitterde op zaterdag 15-09-2012 om 19:02:22 15772 quakes so far at El Hierro....on our way to the biggest volcanic swarm ever? XD @suw @rschott @usgs http://t.co/QHLuQTYo reageer retweet

twitter:

teideano twitterde op zaterdag 15-09-2012 om 19:04:38 Oops, sorry, updated pic....15780 and counting.... @suw @rschott @usgs http://t.co/0vTywTmr reageer retweet

twitter:

teideano twitterde op zaterdag 15-09-2012 om 18:47:33 Deformation evolution at the epicentral site of PINA where new quakes are being located. #volcano #nature #science http://t.co/Nd8wL5Li reageer retweet

quote:

Update 16/09 – 07:46 UTC
- Until 07:35 today, IGN has listed 73 earthquakes. Magnitudes vary from M1.4 (the weakest they are listing but there are hundreds more below this Magnitude) to M2.7. Maximum magnitude decreased a little bit from yesterday (up to M3.2).
- Focal depth remains the same (no penetration into shallower layers)
- Epicenter location is fairly stable (see image below and compare it to the last images yesterday)
- NO more (listed) earthquakes in the El Golfo bay at the 10 km depth layer.
- In line with what could be expected is that the deformations are up again.
- Frontera GPS station has moved North for about 1.5 cm and was also lifted with about 2 cm.
- El Pinar GPS station showed the same movement.
- Restinga GPS station moved a little eastward, did not move along his latitude axis and was inflated most of these 3 stations.
All these data were Ultra Rapid data coming from Prof. Sagiya, a GPS authority in Japan working at the University of Nagoya.
All the mentioned stations operate automatically, which means that nu human is needed to send the data to the computers of the University. Check PINA, FRON and REST stations here.

Paroxismo sísmico en El Hierro

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Audificación of a fragment of seismic paroxysm occurs in El Hierro during the early hours of September 15, 2012, captured by the IGN MACI station located in Tenerife. 1000 has increased the playback speed. In the second part of the video, slower em presented to about 500, you can see the difference of arrival of P and S waves, a "ta-cuumm", which realizes the distance between the Hierro and Tenerife (Juan Ramon Garcia Martel, AVCAN)

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NOTE AVCAN 100 - 14.09.2012 -23:59 h peninsular. - EVOLUTION AND FOLLOW THE EARTHQUAKE SWARM IN-volcanic island of El Hierro. 100 notes from the June 24 earthquake, volcano monitoring eb El Hierro and just today arreón, took more than 40 earthquakes located and unlocated hundreds, come with a fledged revival of the volcanic system that makes you again today

Volcanic Islands, and on multiple sites, not just one, today we see more clearly, two swarms of Hierro volcanic earthquake-mismatched or depth or position ... The first in the Gulf area against Sabinosa about 8 to 11 km depth, and the second in the Gulf but also under the Border area - the Llanillos, deeper about 18-21 km. Watching the hundreds of CHIE earthquakes detected and located just on the seismogram, is the deep system which is generating so much stain and earthquakes in the apparatus, for the times and depths, one thing is clear, there is again a new intrusion of magma at depth as passed on 24 June ... almost anything ... and the worst is that we may have more upside seismicity the next few days .. and of course we'll see deformation and gases that will follow this. updated on the map today, we earthquakes located 43, 12 and 7 before yesterday yesterday, although in the spectrogram and CHIE seismogram are many more, with more a hundred per hour in the last hours giving a spasmodic tremor deep where it is difficult to locate them and have not been located and much besides microseismicity. In the first part of the day are located in shallower swarm area of the Gulf but the second part has been in the deep trend has been reactivated in the last hours to move the seismicity to the S - SE towards Restinga. ... The magnitude of the earthquakes today reaching up to 2.8 for the deep system and 2.6 for the surface. now as when the previous eruption senses besides earthquakes, vibrations are continuous in areas such as Pinar, La Restinga, San Andres, in several urban parts as Tigaday Frontera, Los Llanillos, Las Lajas, Las Toscas, Los Mocanes, and more sites as tips, Sabinosa, Table, The Mocanal, Tamaduste, La Caleta, and even the Parador on the beaches. Some sites also come with noise and bumps and tremors are detectable in the liquid from a bottle in most of the island, as a tremor, surely by the continuous stream of earthquakes that are suffering the island. As odors have not been reported. As for the strange behavior of animals None reported. Curiously enough this morning they received reports Liara all this noise and vibration from other islands, particularly from Palma and Tenerife, which occurs prior to the reactivation in Iron, the less curious. now with so many earthquakes, Luis message reaffirmed very recently of the previous post, inviting everyone to stop by the utility AVCAN web animation (Henry). "There you confirm your intuition: In the box on the right CLICK "Show last 24 hours" and keep the box marked in the upper panel izdo map of "Keeping Score": http://www.avcan.org/

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SPECIAL NOTE 100B, monitoring the seismic-volcanic activity of El Hierro, after a rough night, seismically speaking, the system moves, is pressurizing (the earthquake of 3.1 on the advice, which actually may have something stronger if any continuous pressurizing and clear, this indicates that it has not yet found a way out, so it is down there looking for her.

As for the map of earthquakes, apart from making a perfect ball indicating that a swarm produced by new magma intrusion deep seismicity seems to be moving towards the SSE, towards Restinga area, and are accumulations in multiple alignments of earthquakes in the Gulf in directions NNE - SSW more or less inclined NS in the south of the swarm, WNW-ESE, etc.

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SPECIAL NOTE 100C, monitoring the seismic-volcanic activity of El Hierro, is very busy, seismically speaking, the system moves, is pressurizing (the 3.2 earthquake a few hours ago on the advice, you may now have one more thing continuous pressurizing strong and clear if this indicates that has not yet found a way out, so it is down there looking for her.

On the map the simicidad, today we have been 108 located, almost all greater than 2.0 and the fact is that in these last hours the seismicity is despalaza SSE towards the Restinga on an axis NNW - SSE from the Gulf as another eruption, but this time points to pass just below the town of La Restinga .. and maybe even El Pinar. (Enrique)

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NOTE 101 AVCAN - 15/09/2012 -23:15 h peninsular. - EVOLUTION AND FOLLOW-VOLCANIC EARTHQUAKE ACTIVITY IN THE ISLAND OF IRON.

We and took over 130 earthquakes located today and many hundreds more unaccounted for that is clearly visible in CHIE as earthquakes chained in some cases become attached as a continuous tremor, better known as spasmodic tremor to be too deep. Of course, for which you have doubts, this is a full-fledged revival of the Iron volcanic system that makes you current again volcanic Canary

Today the first swarm shallow no sign obscured by the noise of the second and the updated map of today, we located 131 earthquakes, 71 yesterday and 12 the day before yesterday, that apart from making a perfect ball about 18-22km, indicating that it is a swarm produced by a powerful new intrusion of magma deep seismicity seems to be moving towards the SSE, looking very well in recent earthquakes blue ... to the area of La Restinga and Pinar, and accumulations are earthquakes in various alignments in the Gulf in directions NNE - SSW more or less inclined NS in the south of the swarm, WNW-ESE, etc. The magnitude of the earthquakes continued pressurizing, today the first 3.1 and then up to 3.2, while for superficial system still at the top of 2.6.l.

Today as when the previous eruption besides tremors caused by earthquakes felt in most of the island and talk of all cliques stray vibrations are ongoing in many areas such as Pinar, La Restinga, Tamaduste, La Caleta, San Andres in several urban parts as Tigaday Frontera, Los Llanillos, Las Lajas, Las Toscas, Los Mocanes, and more sites as tips, Sabinosa, Table, The Mocanal, Tamaduste, La Caleta, and even the Parador on the Beaches . Some sites also come with noise and shock, having been heard several in the Gulf and the tremors are felt in the liquid from a bottle in most of the island, as a tremor, surely by the continuous stream of earthquakes that are suffering the island. As odors have not been reported. As for the strange behavior of animals None reported.

There have also been reports of some earthquakes, as well as noise and vibration from other islands, particularly from Palma, La Gomera and Tenerife.

I remember all that is very important if you feel any of this, you should report it to IGN to have documented what felt besides the importance of monitoring should be opening an area eruptive mouth .. is very important. (Enrique).

twitter:

teideano twitterde op maandag 17-09-2012 om 12:04:41 #volcano New GPS data from El Hierro. Inflation continues with a high rate. 2.81 cm up in PINA in just 3 days... http://t.co/d67M7KpP reageer retweet

twitter:

teideano twitterde op maandag 17-09-2012 om 13:27:20 #volcano New GPS data from El Hierro. Inflation continues with a high rate. 3.13 cm up in REST in just 3 days... http://t.co/Vu7CeU4H reageer retweet

twitter:

teideano twitterde op maandag 17-09-2012 om 13:45:31 #photography Anciente lava flow at El Hierro, Canary Islands, actually suffering a big seismic swarm #volcano http://t.co/XKL1xSte reageer retweet