[aktueel] Vulkaanuitbarsting bij Canarische Eilanden #3

quote:

Op zaterdag 10 december 2011 16:13 schreef TARAraboemdijee het volgende:

[..]

Hij zegt toch ook dat hij een dagje El Hierro gaat doen?

quote:

NOTE AVCAN 376 - EARTHQUAKE ACTIVITY-VOLCANIC - IRON ISLAND - DECEMBER 11 2011-22:00 h peninsular - seismic-volcanic activity continues to moderate, with seismicity in the Gulf marine area. Continue an important sign of volcanic tremor in the Restinga area, with an amplitude that remains upward (trend in which the last 72 hours and where the intensity has doubled) and presents a growing number explosions, possibly hydromagmatic, every few minutes, a typical strombolian behavior for which establishes a balance between water inlet and outlet of gases in the exhaust duct so that it pulses like a geyser. No new earthquakes located. Before yesterday 2. Yesterday 0. Today is 1. A total of 11,923 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

quote:

Update 12/12 -13:57 UTC
- As we are currently in a submarine eruption phase with hydromagmatic bursts, we have searched and found a scientific study about such action. In 1984 Kenneth H. Wohletz and Robert McQueen from the USA Los Alamas National Laboratory wrote a paper with the title : “Experimental Studies of Hydromagmatic Volcanism“ [PDF]. We encourage people who want to learn more details about the current phenomena, to read (at least some parts) of this article.

quote:

NOTE AVCAN 377 - EARTHQUAKE ACTIVITY-VOLCANIC - HIERRO ISLAND - DECEMBER 12 2011-11:00 h peninsular - seismic-volcanic activity continues to moderate, with seismicity in the Gulf marine area. Continue an important sign of volcanic tremor in the Restinga area, with a base noise amplitude is maintained upward (trend in which the last 3.5 days and where the intensity has doubled) and ... presents a increasing number of explosions, possibly hydromagmatic every few minutes strombolian typical behavior for which establishes a balance between water inlet and outlet of gases in the exhaust duct so that it pulses like a geyser. No new earthquakes located. Before yesterday 0. Yesterday 1. Now go 0. A total of 11,923 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

quote:

Update 12/12 -14:58 UTC
The amazing NASA Satellite MODIS picture taken at 11:55 UTC this morning (3 hours ago) is showing a cloud column on the exact place of the vent towards the island. Even we do not believe it ! Is must be a coincidence and if not than we have detected the steaming vent waters. The image cannot have been photoshopped as it has been extracted directly from the NASA website (thanks to Julio del Castillo Rivero for sending us the NASA link).

quote:

First day free of eruptions and earthquakes in El Hierro since the summer

FOR the first time since July 17, a whole day has gone by with no eruptions off the island of El Hierro and no earthquakes recorded.
Since the summer, there have been an incredible 11,930 earthquakes on the island.
At its most active, the earth movement led to tremors every five to 10 minutes throughout the day.
Although bubbles were seen on the surface of the water off the coast of La Restinga, no volcanic emissions were observed from the crater under the sea for the first time in nearly five months.
At present, the UK Foreign Office advises against all travel to the La Restinga area of El Hierro as a precaution.

quote:

NOTE AVCAN 378 - EARTHQUAKE ACTIVITY-VOLCANIC - HIERRO ISLAND - DECEMBER 12 2011-22:00 h peninsular - seismic-volcanic activity continues to moderate, with seismicity in the del Golfo marine area. Continue an important sign of volcanic tremor in the Restinga area, with an amplitude that remains (4 days was higher and more than doubled its intensity), presents numerous explosions, possibly hydromagmatic every few minutes, which establishes a balance between water inlet and outlet of gases in the exhaust duct so that it pulses like a geyser. Stronger remarkable explosion at 14:59 has been felt in the Restinga. No new earthquakes located. Before yesterday 0. Yesterday 1. Now go 0. A total of 11,923 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

quote:

Important Update 14/12 – 08:21
The air analysis station shows some (important ?) changes at 08:00
SO2 NO2 NOX
8:00 12 6 15
7:00 7 2 4
6:00 6 2 3
Update 14/12 – 08:05 UTC
The eruption webcam shows smoking material this morning !
Data Update 14/12 – 07:44 UTC
- At 04:02 UTC an earthquake occurred at a depth of only 2 km ! in the El Golfo bay. Click here to see the map with the epicenter. This may be a totally new development if this happens again. The distance to the coast is approx. 5 km (thats the good news). The earthquake has NOT altered the hydromagmatic explosions in the Las Calmas sea.
- Harmonic tremor is still medium with slightly less bursts, although these bursts remain very powerful.

Very Important Update 14/12 – 06:40 UTC
Julio was not resting before he was certain that the light he recorded wasn’t traced back to the exact location. He superposed two images and scaled them so it would coincide with the port location and position. The effect is amazing. The flashlight really came from the vent and because of the distance it must have been a couple of meters high. Of course it can still be a boat, but we do not believe in that scenario as Julio looked at the other recordings later and NO boat was seen in the area. Julio will check his recordings during the morning hours to find out if new similar events might have occurred. The light must have been meters high based on the distance from the webcam (the webcam was not zoomed at the time)


Hot glowing material seen just before midnight ??
Julio del Castillo Vivero surprised us by uploading a short video recorded just before midnight
The video is showing after 11 seconds some object lighting up in the sea and a couple of seconds later another one lighting up. Is it a boat ?? We don’t think so, especially the second object shows a light which is extinguishing smoothly.
And the glowing material make sense if we see the very powerful burst just before midnight (graph below the video)

La Restinga, El Hierro 23:53 GMT/UTC Unknown light source at sea

quote:

NOTE AVCAN 380 - EARTHQUAKE ACTIVITY-VOLCANIC - HIERRO ISLAND - DECEMBER 13 2011-22:15 h peninsular - seismic-volcanic activity continues to moderate, without seismicity localized, but with some weak event (03:08, 03:26, 07: 34 and 11:08 h). Continue an important sign of volcanic tremor in the Restinga area, with an amplitude that has gone up in the last hours, presents numerous explosions, possibly hydromagmatic every few minutes, which establishes a balance between water inlet and the output of gases in the exhaust duct so that it pulses like a geyser. What seems is that they are closer together. No new earthquakes located. Before yesterday 0. Yesterday 1. Now go 0. A total of 11,923 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

Today, a curiositie is the spectrogram of la Palma a compendium of human activities and some echo of the swarm Herro. Aircraft and works, but mostly works, working hours and stop for lunch .. is amazing and we so about a month .. so nobody worry if you see the throngs of the sensor signals that blew up ...

quote:

NOTE AVCAN 381 - EARTHQUAKE ACTIVITY-VOLCANIC - HIERRO ISLAND - DECEMBER 14 2011-11:00 h peninsular - seismic-volcanic activity continues to moderate, with seismicity in the Gulf marine area. Continue an important sign of volcanic tremor in the Restinga area, with an amplitude that has gone up in the last hours, presents numerous explosions, possibly hydromagmatic every few minutes, which establishes a balance between water inlet and the output of gases in the exhaust duct so that it pulses like a geyser. What seems is that more often alternating with periods of peridos less, but more intense. The magnitude of the earthquake only 1.9. New earthquakes 1. 2km depth. Before yesterday 0. Yesterday 0. Today they 1. A total of 11,924 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique)

quote:

You will shortly see the light of volcanological Institute initiative de Canarias (INVOLCAN) and the Cabildo Insular de El Hierro with co-sponsorship of Civic Banking CajaCanarias in order to provide a bit more on the task of helping the community Herreņo in these difficult times. This is a 29x29cm calendar with some snapshots of the underwater eruption south of La Restinga selflessly ceded by members of INVOLCAN and the Helicopter Unit of the Guardia Civil in the Canaries. With a circulation of 10,000 copies and a price of 10 euros / unit, 50% of the profits will go entirely to the community El Hierro, while the other 50% will go to the implementation of educational and training programs on volcanic phenomena volcanic risk management in the Canaries. If you want to collaborate and buy the calendar you can write an email to calendarioelhierro2012@gmail.com. The price does not include shipping.
[bron]

quote:

From AVCAN want to support the maximum dissemination of this initiative as it says aims to provide some help to the community of El Hierro in these difficult times. A charity calendar. Who among us did not want some of those snapshots to save for the future? It's time once again to remember our friends in El Hierro. We applaud the initiative. You can order it on calendarioelhierro2012@gmail.com for only 10 euros. (Fernando)
[bron]

El Hierro Time lapse 17:10

quote:

Update 14/12 19:28 UTC
Thise people wanting to see the hot stones rising up to the Las Calmas sea, please take a look at the La Restinga village webcam. Enjoy the volcano at night ! Thanks to Robert Sommerville for attracting our attention to it.