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El Hierro / Canary Islands - Most Recent Information By The Most Diligent - And Recap Of Past Year
Ms Sans Serif
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[quote:shenue:MV8xOTkxNzI2XzMzNDYyOTA1XzRFNkMxMUVE] I know that part of this was already posted, but I'm posting it also within this post so it is shown as part of the sequence of events so far today. [color=red]Update 17/09 20:01 UTC[/color] - 95 earthquakes, all the recent ones at 20 km or deeper [color=red]Update 17/09 17:05 UTC[/color] - 84 earthquakes until 16:11 UTC - Another 2 shallow quakes at 10 and 11 km , both in the El Golfo, Sabinosa area. The phenomena described in the last update is being confirmed with these quakes. The Sabinosa El Golfo area has become active again. We are however unsure whether IGN has deliberately omitted the quakes in this area when the strong swarm started. If this was not the case (what we should find very normal) then we can speak of a changing pattern. The following hours will give a better idea of the situation [color=red]Update 17/09 15:36 UTC[/color] - [i][b]Is the crust starting to show cracks ?[/b][/i] Why are we writing this ? If IGN data are correct, we have noticed a number of shallower earthquakes the last couple of hours. Nothing to be scared off, but this is definitely a change in patterns versus earlier today and the 2 preceding days. From 12:27 until 14:39 (less than 3 hours) we have noticed 6 under 20 km earthquakes on a total of 17. The shallowest being a 13 km, but also a 15 km and a couple of 18 km. Is the magma the cause ? IGN would probably know it but mostly keeps his information for international science conferences a couple of months later! The shallowest one was recorded below the Sabinosa area, the area where the other 10 km were recorded last week. - 71 earthquakes so far [color=red]Update 17/09 12:45 UTC[/color] - 52 earthquakes so far (listed by IGN until 11:06 UTC). No change in depth patterns or epicenter area. I looks more and more that the island consists of solid rock where magma has a hard time to penetrate [color=red]Update 17/09 08:38 UTC[/color] - Only 30 earthquakes listed by IGN this morning - Hypocenters : no change in depth (hypocenter or focal depth or depth are indicating the same = layer in the underground (crust or deeper) where the energy is generated - Epicenters : same area than yesterday centering in the historic crater area - GPS deformations : Restinga : 1 cm further uplifting (Ultra Rapid) stabilized on the longitude and latitude axis (= earlier movement to the South-East) Pinar : 1 cm uplift pushed 1 cm further to the North stabilized on the longitude axis (= earlier movement to the East) Frontera : no more uplifting, 0,5 cm to the North no change on the longitude axis since long time The plotters under our readers can try to trace this way the source of the magma. Click here for the source of our data (courtesy Prof. Sagiya University of Nagoya) [/quote]
I am the former user "Idgits". About 100 consistent followers and contributors and I created the most informative thread on El Hierro and the Canary Islands archipelago that GLP has ever seen.
Thread: Best El Hierro Thread On GLP - Canary Islands - ACTIVITY HAS RETURNED - AGAIN!
I have since deleted the account that I was using to start that thread, thus the reason it says "AC" now as the original poster.
During the course of that thread I removed all of the "Hi's" and "How are you's" and "bump's" until about page 500...which condensed the thread down to around 280 pages. It has since continued to grow and has become a true source of facts surrounding the earthquake swarm and eventual eruption that took place last year, ending early this year.
Since that eruption officially ended, Hierro has shot back into action several times. I believe we are on the 4th major swarm of activity that has occurred since the eruptive phase ended. It has been recommended by one of our most consistent and well informed users "Shenue" as well as others, to start a new thread to showcase the newest events occuring in Hierro. The previous eruption was incredible, teaching science a whole new concept and understanding of underwater eruptions. It also produced the most radioactive lava ever recorded.
The most incredible feat of Hierro though, is how much pressure it is capable of maintaining WITHOUT erupting. In the last swarm we saw such an incredible increase in pressure that any other geologic formation would've theoretically blown sky high. But not Hierro...it's always maintained it's strength. The current combined energy under Hierro from both magma flow and seismic energy released is basically unknown as IGN stopped recording all the joules together...they stopped the eruptive phase recording in May of this year...here is that chart [
link to www.01.ign.es
So...this new thread is to pick up where Hierro has brought us now. I need to be able to change the thread title as events occur and be able to alert people with that title in case something serious occurs. In addition, there is SO MUCH information in that past thread that it's difficult for new users and followers to sift through to the most recent activities. Below I have comprised a list of information and links relative to the old thread. It's information that took us a year plus to gather!
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