Donnerstag, 18. Dezember 2014

THE CANARY HOTSPOT- volcano islands blog and forum- DECEMBER 01- 31 - 2014

-->

CANARY ISLANDS- ISLAS CANARIAS- KANARISCHE INSELN


^background image by wikicommonsBerthold Werner/ TEIDE Volcano Caldera/ Teneriffe/Islas Canarias
BLOG/ Startseite

ACTIVITY/ DECEMBER   01- 31 2014 


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
-------------


ACTIVITY REPORTS-  DECEMBER   01- 31 2014 


DECEMBER   23- 24:

While the sun produced since Dec 13 several minor SEP events ( from those the current proton storm is the strongest ) ,


 also magmatic intrusion resumed or increased again on several hot spots. While the "global magma level" near hot spots  seems to be currently in a depth of 5- 10 km, Magmatic activity also increased  on the Canary hotspot :

EventoFechaHora(GMT)*Latitud Longitud Prof.
(km)
Int. Máx.Mag.Tipo Mag. (**)LocalizaciónInfo
131113423/12/201403:43:5427.7013-18.029113Sentido2.4mbLgW EL PINAR.IHI[+]
131113123/12/201401:05:5329.4057-15.19042.2mbLgATLÁNTICO-CANARIAS[+]
131076619/12/201422:15:5427.7177-18.2529151.5mbLgW FRONTERA.IHI[+]
131047418/12/201407:51:2227.6811-18.050261.6mbLgSW EL PINAR.IHI[+]
131047318/12/201404:43:2429.0925-14.68012.9mbLgATLÁNTICO-CANARIAS[+]


Since the third activity phase began in December 2013,  there was yet only one  M  5.1 quake  which  happened early in 2014  in the Atlantic between Teneriffe and La Palma that could be felt as a ground shaking  on  the aneighbored islands and which even caused minor damage such as by  rockfalls ) . But  that was   a quake form a TECTONIC activity on a larger scale and not directly or only  related to the Canary hotspot. 
But-  allthough the new magmatic intrusion continues since then. absolutely NOTHING as it seems yet became obvious on the surface  as a typical  sign of this volcanic activity!

Just during  major tourist season of the year  on the Canaries...

the first time 
now first time at ALL  a  MAGMATIC  quake occured below El Hierro that could be felt on the surface by residents mainly in the area of El PINAR in the Southeast of El Hierro.  IGN has not published this eyewitness report and we again don´t  know exactly, what it was-  maybe something like a stronger  surface tremor. What I`d like to know, is: Was it related to a significant warming in the ground?

23/12/2014 03:432.4W EL PINAR.IHISentido
22/12/2014 22:253.4NW AIN DEFLA.ARG
22/12/2014 21:334.0NE KSAR EL KEBIR.MAC
21/12/2014 18:534.1NE BLIDA.ARG
21/12/2014 16:322.3NW PADUL.GRSentido




Everyone can imagine what that can mean---. 
Magma however is still rising further below the canary islands, and has reached already a level of 5- 7 km , on which any contact with water could cause an explosive eruption on a bigger scale . 

The plateau however. the Canaries are situated on seems to be perfectly  sealed ( at least against the sea water above!) by the mass of sediments  the Atlantic currents have brought along there and deposited  over ages .

How long this seal still  will/ can withstand the magmatic pressure from below  is the main question now.
However a stronger earthquake that would cause a crack in that part of the crust would be one scenario in which water can get into that magma bubble . The consequences might be low if that explosive eruption would then also occure subseas but would be dramatic  if Mt Teide or el Pico Veja on La Palma would  still  be the easiest way that pressure can find its way out (through their volcanic chimneys- the ventils these volcanoes have already provided since ages). With this- only estimable- HIGH  amount of magma whioch has accumulated since End 2013  below the Canaries an explosive event when magnma burst its final way free  there could be so strong that it  triggers landslides (including  the widely discussed "WORST CASE" the BBC  Tsunami scenario) , but likely might also  set free a major , hot pyroclastic cloud  in the first phase of a real surface eruption  ( containing hot explosively burning gases such as hydrogen formed by the contact of hot magma and seawater) 

---------------

DECEMBER   15


During the first week,  the magmatic earthquake  activity in the mantle   plume below El Hierro  was almost gone, while Fogo on the capverde islands covered wide areas of the islands with an about 1 meter thick lava flow. On December 14 then,  Fogo`s   activity significantly decreased and the MODVOLC thermal image taken on Dec 16 shows,  the peak of Fogo has  changed its color form red to yellow:


 Experts are not sure whether the current eruption is yet over now or just waiting for another magma boost.


 Magmatic quakes below El Hierro have resumed:

On the same day- December 14 activity however resumed below El Hierro, after some tectonic quakes had occured near to Tenerife the two days before.
On December 18 ( 20141218) we now have the first magmatic quake below El Hierro from a depth of just 6 km ( which is  the most shallow one yet after the last most shallow one in November 2014 came from a depth of 7 km ) :

So all shows: The magma is again coming closer to the surface...

Colorisation on MODVOLC images has not changed much:


while  harmonic tremors (indicating the presence of hot magma) are CURRENTLY (can change form day to day!) not more as strong as they were towards the end of November:  (seismographs  Tenerife and Grac Canaria are agains turned  off.  Strongest signals are therefore today on La Gomera.







1310474
18/12/2014
07:51:22
27.6811
-18.0502
6
1.6
mbLg
SW EL PINAR.IHI
1310473
18/12/2014
04:43:24
29.0925
-14.6801
2.9
mbLg
ATLÁNTICO-CANARIAS
1310095
14/12/2014
22:35:01
27.7415
-18.0204
12
2.2
mbLg
SW FRONTERA.IHI
1310064
14/12/2014
06:44:37
28.1991
-14.9954
10
2.2
mbLg
ATLÁNTICO-CANARIAS
1310035
13/12/2014
18:53:20
27.7445
-18.0236
14
1.6
mbLg
SW FRONTERA.IHI
1310008
13/12/2014
07:33:21
28.2748
-16.5420
3
1.7
mbLg
W FASNIA.ITF
1309879
12/12/2014
01:05:06
28.1769
-16.1788
25
1.8
mbLg
ATLÁNTICO-CANARIAS
1309749
10/12/2014
23:44:17
28.1494
-16.2050
24
2.0
mbLg
ATLÁNTICO-CANARIAS

On The Sun, the most active region AR 12235 ( which is a nested one  - and - so far as  I have tracked it back yet it is there since at least may 2014 on the same coordinates) is again rotating over the visible solar disc . AR 12235 is since May 2014 also part of a larger configuration that includes another nested AR westwards and a massive coronal hole . All together that configuration covers more than a quarter of the solar disc Its still very active . However: 

AR 12235 produced an extreme fast filament eruption on Dec 14. Another strong filament eruption was observed already on Dec 12  from the northern edge of the coronal hole. On Dec 16, AR 12235 , while crossing the solar meridian now produced a strong M8.6 class LDE (long duration event) with a fully halo and earth directed CME that will approximately  arrive on December 18- 19 .

Two events were associated to an increase of Protons impacting into the geomagnetic field. This  proton flux is rather extraordinary slow and rose after Dec 14 to not more than 1,5 pfu and decreased again already the day after, so it was back at 0.1 pfu on December 16. 




This integral protons flux  began slightly to rise also after the two  LDE flares on December 16 but seems to have reached its peak with just 0.6 pfu. already on December 18. Since  6 UTC its seems to drop :



 Its not what I would call an SEP
However. even proton impacts of that kind already have heating up effects to the earth mantle what likely will lead to a slight increase in global hot spot activity during the next days. 

More about this in my solar and terrestrial blog

--------------

Additional: 

MODVOLC thermal  image of the Yellowstone caldera/ 20141216:




               

GOOGLE BLOG ARCHIVE
Seitenzahl: 03
Latest Post
BLOG START/ NAVI

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:


-------
---------------

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?

:
:           

Keine Kommentare:

Kommentar posten