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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:Gizzie 24065870:MV8xOTkxNzI2XzMzNDk1NDEzX0E5NEJCOUEy] [quote:American Trappers, LLC:MV8xOTkxNzI2XzMzNDk1MDMyX0VCNzM0MzZB] [quote:Anonymous Coward 24065290:MV8xOTkxNzI2XzMzNDk0OTA4Xzk3RTZBNTVE] [quote:American Trappers, LLC:MV8xOTkxNzI2XzMzNDkyNTk1XzE0RTRDNDEx] [quote:shenue:MV8xOTkxNzI2XzMzNDkyMDEyXzQ0OTIxOTUx] Good Morning.. [color=red]2012-09-19 10:16[/color] - 23 earthquakes in total [b]yesterday[/b], the last one being a M1.7 at 14 km - 7 earthquakes so far this morning, 2 at a depth of 10 km (El Golfo and Las Calmas), the rest at approx. 20 km deep in the old crater area and El Pinar area - GPS deformations : Frontera : a few mm further inflated, a couple of mm to the North-East Pinar : stabilised in horizontal and vertical axis (normal as with the decrease in number and strength of the earthquakes, the pressure below the center of the island has strongly subsided) Restinga : comes as a surprise – Restinga is pushed a few mm to the east and has a further strong inflation of nearly 1.5 cm Ultra Rapid preliminary results) http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/ [/quote] The last part of your post caught me eye. 1.5 cm in restinga. That's huge when you figure the ground itself has moved that far. AND...there haven't been any significantly large quales going on. [b]Strange how it could move that far or inflate that much without strong magmatic intrusion or quakes.[/b] [/quote] not really op.. [quote:Anonymous Coward 24018209:MV8xOTkxNzI2XzMzNDgyMjA2XzY0MDAxMUQ3] could it be caused by pore pressurisation? ''Thermally induced pore pressures appear capable of developing large uplift forces beneath a potentially un- stable block'' from that link above. [/quote] [/quote] good point. However...wouldn't that lead to cracking? When the ground pops and cracks from thermal pressure it is an earth quake and registers as such. Shouldn't we be seeing quakes listed from that? Or...is the ground really that flexible? [/quote] I think your right AT.... What we got to remember as well is, the quakes are quite deep...I don't think it is pressure causing the uplift...probably more likely the 4th injection of magma under the island that is causing the uplift..dont forgot also, after the 3rd injection not long ago, there was no eruption, so we have a 4th lot of magma coming up under the 3rd, this causing the uplift.... Don't get me wrong, there is pressure building up, but it remains to be seen if the 4th injection will actually cause a new eruption...probably depends on the amount of magma coming up and also the speed of it... Either way, El Hierro continues to through conundrums our way.. even the scientists studying it are still at a lost as to what is really going on below that Island.. [/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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