Mittwoch, 4. März 2015

THE CANARY HOTSPOT- volcano islands blog and forum-MARCH 01- 31 - 2015

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CANARY ISLANDS- ISLAS CANARIAS- KANARISCHE INSELN


^background image by wikicommonsBerthold Werner/ TEIDE Volcano Caldera/ Teneriffe/Islas Canarias
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ACTIVITY/ MARCH    01-  31 2015 


internal links > START HOME SOLAR BLOG VOLCANO WATCH VOLCANO MAPS external links > IGN AVCAN AVCAN/ fb. EMSC GVP NOAA






Activity report here will ony follow, if new events take place. For other environmental reports, please visit the solar and terrestrial blog on my homepage

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MARCH 31- 2015


until the end of March 2015. the activity was rather low, Low magnitude magmatic quakes below El Hierro continued n a low rate with less than 1 event in two days.

On March 29 a larger magmatic quake occured subseas South of El Hierro, likely form the mantle plume below. The quake had a magnitude of  M 3.5 and was felt all over the island as some kind of minpr shaking that caused no damage:

132329629/03/201505:48:1727.6655-18.097520Sentido3.5mbLgSW EL PINAR.IHI[+]




On March 31. IGN reports a new serial of microquakes now also below the main crater of Gran Canaria whicnh looks rather like a caldera yet but which for sure is sleeping since ages. However this all is a clear that the activity 1. is going on with magma, which has accumulated during thas past year  in the old e caldera right in middle of the Canary islands and which is now coming more and more near to the surface .
2. THe caldera as filled with at least on kilometer of sediments brought along in thge last thousand years 
 by the sea currents has created a highly resistant layer against the magmatic pressure from the deep.

this all at let conclude, that this accumulated magma- just depending whether the magmatic intrusion from the Canary hotspot - South east of El Hierro  will continue or stop now at any time - 
one day just burst its way free through an explosive which due to all what we could observe duriong tha past year will likely occure 
 on or around Teneriffe

 and 2. THat it builts slowly up more and more pressure on all the old formation- mainly the one of mount  Teide and now also to aneighbored Gran Canaria:




JUst the faulkt liner between Teneriffe and Gran Canaria was rather active  with a longer serial of deep  quakes exact from around a subsea peak right in the middle  o both islands, which is believed to be a volcano crater in the forming, but which never erupted yet, as there is typical crater to see.

AVCAN now issued  a statement about  this formation. saying in  general, that the ship Angeles alvariño will now further examine the formation and the 500 meter high believed to be or to become a volcano crater, after 
more 24 minor quakes occured there within one month. all these quakes thos contiunue since more than a half year ever occured yet in depths between 20 and 30 kilometrerm, but became some mlore shallow during tha past month..

The image shown along with tjhat article however is not taken form tjat side but shows the new crater that has formed out at the end of the first activity period in 2011, when the crater almost yet reached the surface, when the activity then suddenly stopped and is unlikely to appear there again, since mantle magme creates extreme hard stone if it once cools down and 
hardens out This is why shield volcanoes have always have many craters, as a previous interrupted activity forms such a hard shield that the next activity mostly appears at the edge of that shield, where the formation becomes weaker and soft enough that the magma can get through to the surface.


132377031/03/201523:43:0928.1330-16.2446312.7mbLgATLÁNTICO-CANARIAS[+]
132352230/03/201517:40:1128.7116-13.15702.1mbLgATLÁNTICO-CANARIAS[+]
132329629/03/201505:48:1727.6655-18.097520Sentido3.5mbLgSW EL PINAR.IHI[+]
132319928/03/201513:59:5927.6549-18.0058221.9mbLgSW EL PINAR.IHI[+]
132298327/03/201508:22:1128.1322-16.2396272.3mbLgATLÁNTICO-CANARIAS[+]
132297927/03/201505:32:5227.7574-18.2711122.2mbLgW FRONTERA.IHI[+]
132297827/03/201501:48:2828.1698-16.0654321.9mbLgATLÁNTICO-CANARIAS[+]

MARCH 04- 2015



Several shallow quakes occured on March 03 around Teneriffe : one again on the fault line between Teneriffe and Gran Canaria- first time from a depth of just 6 km below sealevel. Two magmatic quakes were noticed South of El Pinar/ El Hierro, where the hot spot is situated

On February  27 and 28, two  quakes had occured offshore Puerto de la Cruz and again in  the North of Teneriffe, ( I have not reported yet in the previous months  report)  IGN made no notes on the  depth of these quakes:




131987803/03/201503:53:5827.7028-18.0093111.5mbLgW EL PINAR.IHI[+]
131970501/03/201512:52:4927.6674-18.002891.5mbLgSW EL PINAR.IHI[+]
131969601/03/201509:40:1528.1191-15.184162.2mbLgATLÁNTICO-CANARIAS[+]
131964128/02/201517:05:5728.4409-16.55911.6mbLgNW PUERTO DE LA CRUZ.ITF[+]
131942527/02/201508:38:1328.4197-16.66251.8mbLgNW SAN JOSÉ.ITF[+]
131941427/02/201503:44:4928.2379-16.3221151.5mbLgE FASNIA.ITF[+]

TREMORS


indicating magmatic activity are rather low on all islands and are relatively strongest on La Gomera: (hot magma however makes less tremors than cooler one):

MODVOLC THERMAL  ALERTS/ 20150304:





MARCH 03- 2015: INTEGRAL ELECTRON FLUX EXCEEDED 1.000 pfu


There were two minor proton events on the Sun ( 20150221 and 20150228) followed by an electron accumulation that  exceeded  1.000 pfu on March 03.  Its - due to my statistic evaluations- very likely,  that these energetic electrons-  the earth atrackts from the solar magnetic field  in an equivalence to neutralise the amount of solar protons that impacted with such an SEP  before-  contribute much to volcanic surface activities:



you find more updates on that on my website:

solar and terrestrial blog
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useful links/ nützliche Links:
EMSC
Global Volcanism Program
Facebook Seite der AVCAN
IGN (Spain) Serie El Hierro
Volcano-discovery.com
Earthquake- report. com
MEDIEN:
KARTEN:
SOLAR (SAT)
SOLAR (info)

REAL TIME FEATURES:
(click on the images to enlarge them)

letztes Beben(Kanarische Inseln ( IGN)



Bebenmap( El Hierro)


GPS deformation measure stations on El Hierro

MODVOLC/ Hawaii  thermal alerts:



^
near real time thermal alert
for El Hierro, la Palma, Teneriffe and la Gomera ( updated once per week)

volcano discovery. com : Earthquake within 30 km radius around El Hierro:


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previous posts those contain articles about the Canary volcanism in general: 


February 10- 16- 2014

 January 15- 19- 2014

January 20- 27- 2014




Mnt Teide ( Teneriffe)

related free online sources:


VOLCANOES:

"Eruptions that shook the world"

a very interesting and freely avaible  source how volcanoes work where you find all what you want to know about volcanoes

Sources of the volcanic activity at El Hierro ( since 2011):

Some may like to read a review on the volcanic activity below El Hierro in 2011:
Here is a data based report  by earthquake .com- an excellent site regularly reporting (what you never get in the news) about Earthquakes and related volcanism

worldnews.com: Special environmental reports about the Canaries 

Miscanellous:
 Geschichte Teneriffas (deutsch)





 Fataga ( Gran Canaria)



 San Cristóbal de La Laguna in 1880 (Tenerife)




Caldera de Taburiente National Park (La Palma).




Garajonay (La Gomera)




   (BBC/ 20111204)Canary Island volcano: A new island in the making?

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