Vulkaanuitbarsting bij Canarische Eilanden #4

quote:

And this is the evolution of the released seismic energy accumulated in so far in 2012, where it looks like this up after the 3.2 the other day and indicating that the system is responsive and seeing as there are different steps .. . and doing a little analysis leads me to a question Will the pattern of reactivation of a step more or less noticeable each "10-14" days?.

If it does, we should expect an earthquake a little higher, around 3.0 degrees or something else from today to the next 3-4 days.

If, however, does not follow the pattern, we will stay where it has been a surge and the graph would follow its slope, which indicates that it continues releasing energy to be active. (Enrique)

[bron]

quote:

Update 14/02 – 16:45 UTC
- There has been an official communication [In Spanish] from the Government of Canary Islands that clarifies previous reports including an image from the bathymetry.
- “Eruption is still active, with a process of magmatic reactivation, constant vigilance will remain.
Scientists responsible of IOE, from Ramón Margalef, have confirmed to PEVOLCA that the depth of the main cone is 120 meters.
Also, from the bathymetry works done last week, scientists have recorded the emergence of a secondary cone attached to the side of the maincone having a height of 75 meters and whose summit is 200 meters from the surface.”

- “It is also apparent that the emission of material varies around the main summit. The area, East of El Julan, is the only place in which submarine volcanic activity has been detected in all surveyed areas, in the various campaigns.”

quote:

NOTE AVCAN 450 - SEISMIC-VOLCANIC ACTIVITY - HIERRO ISLAND - FEBRUARY 15 2012-8:00 pm peninsular - seismic-volcanic activity remains moderate activity today with the sea de las Calmas, Coast Julan and in the area of peaks at like yesterday with some more in the area of peaks and Frontera. Also looks pretty microseismicity detected but not located in the spectrogram. Continued volcanic tremor signal in the Eruptive area ... La Restinga, fell again yesterday afternoon in intensity to rise during the night and early yesterday morning and has since been declining, more and even seems to want to pick up something the last few hours. New earthquakes 10. Magnitude between 2.3 and 1.2. Depths between 8.8 and 11.9km (and two at 6.2 and 7.1km). Yesterday 10. Yesterday 10. 6 are today. A total of 12,226 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

DAY 15 FEB EARTHQUAKES. - Red (6)
DAY 14 FEB EARTHQUAKES. - Yellow (10)
DAY 13 FEB EARTHQUAKES. - Light green (10)
DAY 12 FEB EARTHQUAKES. - Dark Blue (10)
DAY 11 FEB EARTHQUAKES. - Rosa (5)

The seismicity map of útlimos 5 days, Los today are in the Mar de las Calmas, three along the coast of Julan and two further south. Highlight one of 2.3 in the area of peaks. Yesterday was the seismicity Nearby, including some more towards the area of peaks and Frontera. Like earthquakes now and aye, before yesterday afternoon's activity was concentrated in the Mar de las Calmas and Julan mainly, but there was one morning in the el Golfo area. Highlight a deep earthquake on 12 in the area of the tip of Arenas Blancas Sabinosa at 23.2km and the seismicity is located on the night and morning in the Golfo and in the afternoon at Sea de las Calmas. Del Golfo activity lined up mainly in NS. (Enrique).

1126539 14/02/2012 12:51:26 27.6678 -18.0561 11.3 1.9 mbLg SW EL PINAR.IHI

1126549 14/02/2012 13:01:12 27.7067 -18.0605 6.2 2.2 mbLg W EL PINAR.IHI
1126563 14/02/2012 18:23:39 27.6553 -18.0865 8.8 1.6 mbLg SW EL PINAR.IHI
1126566 14/02/2012 20:06:09 27.6232 -18.0741 9.9 1.3 mbLg SW EL PINAR.IHI
1126568 14/02/2012 22:11:31 27.7507 -18.0448 9.9 1.2 mbLg W FRONTERA.IHI
1126589 14/02/2012 23:45:11 27.6530 -18.0504 9.9 1.2 mbLg SW EL PINAR.IHI 12220

1126591 15/02/2012 01:50:54 27.6892 -18.0726 7.1 1.4 mbLg W EL PINAR.IHI
1126593 15/02/2012 02:26:24 27.6451 -18.0904 10.8 1.4 mbLg SW EL PINAR.IHI
1126605 15/02/2012 04:05:33 27.6548 -18.0571 2.0 mbLg SW EL PINAR.IHI
1126607 15/02/2012 04:15:10 27.6921 -18.0833 10.5 1.3 mbLg W EL PINAR.IHI
1126637 15/02/2012 05:02:09 27.6835 -18.0851 11.9 1.3 mbLg W EL PINAR.IHI

1126639 15/02/2012 05:21:51 27.7122 -18.0573 9.6 2.3 mbLg SW FRONTERA.IHI

quote:

Important Update 15/02 – 15:23 UTC
- 2 great new Ramon Margalef documents (including the bathymetry data) which were the basis of the Pevolca press conference from yesterday (thank you ER reader Julian). Both are in Spanish and are very technical, but some easy conclusions can be distilled from it.
Informe de campaña BIMBACHE1011-9 / 2012
Informe 9‐12 de febrero de 2012. Bimbache1011 leg 10

quote:

NOTE AVCAN 451 - SEISMIC-VOLCANIC ACTIVITY - HIERRO ISLAND - FEBRUARY 16 2012-11:00 pm peninsular - seismic-volcanic activity remains moderate activity today with the sea de las Calmas, Coast Julan and one very close to the eruptive , a little to the NW of it. Microseismicity is also detected but not located in the spectrogram. Continued volcanic tremor signal in the eruption of the Restinga, takes 4 days non-stop down and it is hardly noticeable in the spectrogram, while watching the activity on the webcam and the seismogram seems to want to pick up some last hour. New earthquakes 25. Magnitude between 2.0 and 0.7. Depths between 9.4 and 12.9km (and three at 6.7, 8.1 and 8.9km and four to 15.4, 16.7, 17.3 and 19.9km). Yesterday 10. Yesterday 23. 8 are today. A total of 12,251 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

FEB. - Light Blue (8)
DAY 15 FEB EARTHQUAKES. - Red (23)
DAY 14 FEB EARTHQUAKES. - Yellow (10)
DAY 13 FEB EARTHQUAKES. - Light green (10)
DAY 12 FEB EARTHQUAKES. - Dark Blue (10)
DAY 11 FEB EARTHQUAKES. - Rosa (5)

The seismicity map of útlimos 6 days, today, as yesterday, are the Mar de las Calmas and one near the eruption of La Restinga. Those of yesterday were in the Mar de las Calmas in the Julan in the area of peaks and in the Golfo area. Yesterday was the seismicity Nearby, including some more towards the area of peaks and Frontera. Highlight the 19.9km earthquake ... in an area where there has been little seismicity and the red is more to the SW. Like earthquakes and the day before yesterday. The diameter 13 in the afternoon activity was concentrated in the Mar de las Calmas and Julan mainly, but there was one morning in the Golfo area. Highlight a deep earthquake on 12 in the area of the tip of Arenas Blancas Sabinosa at 23.2km and the seismicity is located on the night and morning in the Golfo and in the afternoon at Sea de las Calmas. Del Golfo activity lined up mainly in NS. (Enrique).

1126641 15/02/2012 05:45:47 27.6708 -18.1191 10.6 1.5 mbLg W EL PINAR.IHI
1126651 15/02/2012 06:28:28 27.7081 -18.0531 12.3 0.8 mbLg W EL PINAR.IHI
1126653 15/02/2012 06:30:49 27.6994 -18.0814 10.1 0.9 mbLg W EL PINAR.IHI
1126662 15/02/2012 08:50:09 27.6627 -18.0746 10.3 1.1 mbLg SW EL PINAR.IHI 12230

1126682 15/02/2012 09:35:11 27.6208 -18.0882 10.5 1.4 mbLg SW EL PINAR.IHI
1126688 15/02/2012 09:35:33 27.6955 -18.0587 10.0 0.9 mbLg W EL PINAR.IHI
1126746 15/02/2012 11:03:09 27.6401 -18.0523 16.7 1.5 mbLg SW EL PINAR.IHI
1126809 15/02/2012 13:59:11 27.7101 -18.0090 17.3 0.9 mbLg W EL PINAR.IHI
1126818 15/02/2012 14:15:59 27.7389 -18.0289 8.1 0.8 mbLg SW FRONTERA.IHI

1126823 15/02/2012 14:31:39 27.7027 -18.0452 12.5 0.7 mbLg W EL PINAR.IHI
1126831 15/02/2012 16:05:34 27.7288 -18.0295 10.2 1.5 mbLg SW FRONTERA.IHI
1126832 15/02/2012 16:11:54 27.7461 -18.0346 10.1 0.7 mbLg SW FRONTERA.IHI
1126839 15/02/2012 16:12:39 27.6934 -18.0970 15.4 1.0 mbLg W EL PINAR.IHI
1126843 15/02/2012 17:10:54 27.6178 -18.1423 19.9 2.0 mbLg SW EL PINAR.IHI 12240

1126844 15/02/2012 17:23:08 27.6906 -18.0383 10.7 1.1 mbLg SW EL PINAR.IHI
1126848 15/02/2012 17:34:26 27.7132 -18.0328 11.4 1.4 mbLg W EL PINAR.IHI
1126849 15/02/2012 17:56:56 27.7396 -18.0791 11.5 1.0 mbLg W FRONTERA.IHI

1126861 16/02/2012 01:21:40 27.6734 -18.0648 10.3 1.7 mbLg SW EL PINAR.IHI
1126863 16/02/2012 02:58:52 27.6807 -18.0930 9.4 1.4 mbLg W EL PINAR.IHI

1126870 16/02/2012 03:36:29 27.7013 -18.0878 11.3 1.3 mbLg SW FRONTERA.IHI
1126872 16/02/2012 03:50:24 27.6764 -18.0633 11.7 1.4 mbLg SW EL PINAR.IHI
1126874 16/02/2012 03:57:00 27.6022 -18.0730 10.0 1.1 mbLg SW EL PINAR.IHI
1126884 16/02/2012 06:10:05 27.6814 -18.0752 6.7 1.8 mbLg SW EL PINAR.IHI
1126885 16/02/2012 06:29:56 27.6205 -18.0043 12.9 0.5 mbLg SW EL PINAR.IHI 12250

1126886 16/02/2012 07:07:48 27.6647 -18.0817 8.9 0.7 mbLg SW EL PINAR.IHI

quote:

NOTE AVCAN 452 - SEISMIC-VOLCANIC ACTIVITY - HIERRO ISLAND - FEBRUARY 17 2012-9:15 pm peninsular - seismic-volcanic activity remains moderate, with seismic activity today in the area of mountain peaks, Tanganasoga height towards the Julan and east coast Julan. Microseismicity is also detected but not located in the spectrogram. Continued volcanic tremor signal in the eruption of the Restinga, takes 5 days down without stopping, but rebounded somewhat yesterday, following the low and barely noticeable in the spectrogram. New earthquakes 26. Magnitude between 1.5 and 0.2. Depths between 7.1 and 12.3km (and one 2.7km and four at 15.2, 15.6, 15.9 and 16.0km). Yesterday 23. Yesterday 30. 5 are today. A total of 12,277 earthquakes are located in El Hierro by IGN from 9:00 am of July 19, 2011 (Enrique).

FEB. - Yellow (5)
DAY 16 FEB EARTHQUAKES. - Light Blue (30)
DAY 15 FEB EARTHQUAKES. - Red (23)

The seismicity is concentrated today in the area of peaks and Julan, while that of yesterday is well distributed throughout the area of seismic activity from the el Golfo area to the Mar de las Calmas and even on land (Enrique).

1126900 16/02/2012 08:12:11 27.7026 -18.0861 10.8 0.7 mbLg SW FRONTERA.IHI
1126902 16/02/2012 08:20:37 27.7061 -18.0796 11.2 1.2 mbLg SW FRONTERA.IHI
1126903 16/02/2012 08:43:49 27.7046 -18.0705 12.3 1.4 mbLg W EL PINAR.IHI
1126927 16/02/2012 11:11:47 27.6652 -18.0432 7.1 1.1 mbLg SW EL PINAR.IHI

1126941 16/02/2012 11:11:58 27.6777 -18.0307 7.3 1.2 mbLg SW EL PINAR.IHI
1126970 16/02/2012 12:14:23 27.6904 -18.0633 11.0 0.5 mbLg W EL PINAR.IHI
1127001 16/02/2012 12:52:17 27.6538 -18.0578 6.8 1.2 mbLg SW EL PINAR.IHI
1127007 16/02/2012 13:01:01 27.7537 -18.0696 15.2 1.5 mbLg W FRONTERA.IHI
1127009 16/02/2012 13:02:57 27.8471 -18.0506 2.7 0.9 mbLg NW FRONTERA.IHI 12260

1127011 16/02/2012 13:05:24 27.7174 -18.0488 11.6 0.8 mbLg SW FRONTERA.IHI
1127013 16/02/2012 13:18:43 27.7404 -18.0605 15.6 0.7 mbLg W FRONTERA.IHI
1127015 16/02/2012 14:36:59 27.7180 -18.0163 12.4 0.6 mbLg W EL PINAR.IHI
1127016 16/02/2012 15:15:21 27.7556 -18.0487 15.9 0.2 mbLg W FRONTERA.IHI
1127018 16/02/2012 15:38:42 27.7094 -18.0393 16.0 0.7 mbLg W EL PINAR.IHI

1127019 16/02/2012 15:42:03 27.7536 -18.0366 10.6 0.9 mbLg W FRONTERA.IHI
1127020 16/02/2012 16:54:16 27.6525 -17.9966 0.8 mbLg SW EL PINAR.IHI
1127021 16/02/2012 17:07:38 27.7119 -18.0802 11.8 1.0 mbLg SW FRONTERA.IHI
1127049 16/02/2012 18:07:05 27.7194 -18.0480 11.4 0.3 mbLg SW FRONTERA.IHI
1127047 16/02/2012 18:53:36 27.7232 -18.0603 8.0 0.9 mbLg SW FRONTERA.IHI 12270

1127048 16/02/2012 19:11:41 27.6774 -18.0502 9.7 0.7 mbLg SW EL PINAR.IHI
1127060 16/02/2012 20:19:23 27.7379 -18.0583 12.3 1.0 mbLg SW FRONTERA.IHI

1127071 17/02/2012 00:26:43 27.7276 -18.0525 10.1 1.3 mbLg SW FRONTERA.IHI
1127073 17/02/2012 01:28:20 27.6930 -18.0499 11.2 1.4 mbLg W EL PINAR.IHI
1127074 17/02/2012 02:10:44 27.6920 -18.0614 12.0 1.2 mbLg W EL PINAR.IHI

1127077 17/02/2012 05:38:49 27.7096 -18.0672 10.7 1.5 mbLg SW FRONTERA.IHI
1127078 17/02/2012 05:41:08 27.7213 -18.0653 11.7 0.7 mbLg SW FRONTERA.IHI

quote:

Javier's image of the moon's influence on the tremor can not be seen by the small font size. Americans are big supporters of the influence of gravitational tides in the volcanism generating heat as well as internal and apparently breaking efforts on the bark, the other theory, that of self-sustaining dynamo, was abandoned in the 60 after the Webber et al study that concluded it was not factible.Personalmente doubt a major influence of the gravitational pull on volcanism.
[bron]

quote:

Current Volcanic Islands (AVCAN) The truth is that this is scientifically proven in some volcanoes .. I leave the google translation arranged more or less of the item (Enrique):

Influence of fortnightly Earth tides at Kilauea Volcano, Hawaii

Daniel Dzurisin
U.S. Geological Survey, Hawaiian Volcano Observatory, Hawaii Volcanoes, National Park, Hawaii 96718

Analysis of 52 historic eruptions confirms the premise that fortnightly earth tides play a significant role in triggering activity at Kilauea Volcano, Hawaii. Since January 1832, nearly twice as many eruptions have occurred nearer fortnightly tidal maximum than tidal minimum (34 vs. 18). A straightforward significance test indicates that the likelihood of a fortnightly tidal influence on Kilauea eruptions is roughly 90%. This is not the case for Mauna Loa Volcano, where 37 historic eruptions have been distributed randomly with respect to the fortnightly tide. At Kilauea, stresses induced by fortnightly earth tides presumably act in concert with volcanic and tectonic stresses to trigger shallow magma movements along preexisting zones of weakness. Differences in structure or internal plumbing may limit the effectiveness of this mechanism at Mauna Loa. Tidal effects seem to be less marked at shields than at some islandarc volcanoes, possibly because higher average volcanic stress rates in Hawaii more often override the effects of tidal stresses.