Dienstag, 1. April 2014

THE CANARY HOTSPOT- volcano islands blog and forum- APRIL 1- 14- 2014

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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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APRIL 01- 15- 2014


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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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ACTIVITY REPORTS


April 15- 2014:

two minor quake on April 15. Both again form a depth of 10- 12 km- likely a clear sign that magma has reached that level as well: 

126974215/04/201410:59:2227.7368-18.030012 1.6mbLgSW FRONTERA.IHI[+]
126973715/04/201410:48:4427.7152-18.031313 1.8mbLgW EL PINAR.IHI[+]


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April 12- 14  2014

Activity increased on April 13 with  4 quakes below El Pinar at the southeastern peak of the island, where the first and yet only eruption took place in 2011. Still the minimal depth remained at 11 km below surface, where I suppose, that the mantle plume ends up in the caldera, from where the uprising magma currently seems to flow  into any hollow spaces around,  but might create also a new magma chamber with the time.
 The M 2.4 quake on April 12/ 00:46 UTC took place below El Tanque ( near Puerto de La Cruz) on the Northern flank of Teneriffe (El Teide).

126945114/04/201404:40:3027.7817-17.9544201.5mbLgSW VALVERDE.IHI[+]
126935513/04/201421:56:2128.1735-16.12311.7mbLgATLÁNTICO-CANARIAS[+]
126932413/04/201417:47:3427.7037-18.0341111.7mbLgW EL PINAR.IHI[+]
126932213/04/201416:24:2127.7042-18.0287112.1mbLgW EL PINAR.IHI[+]
126920613/04/201413:40:1327.6482-18.0256121.8mbLgSW EL PINAR.IHI[+]
126897613/04/201403:38:3627.7396-17.9399221.8mbLgNE EL PINAR.IHI[+]
126849312/04/201400:46:3228.0860-16.1792312.4mbLgATLÁNTICO-CANARIAS[+]


Later two other minor quakes were measured - one with an unknown depth somewhere between th islands .( I have first to figure out where exactly).  The latest on April 14/ at time of this update took place again below the Northeastern part of the island,, where the most quakes happened during this last activity phase since December 23 2013..

HARMONIC TREMORS:

Weak tremors are still present on all islands and remain to be  still relatively strongest on Gran Canaria and the eastern islands:

< Gran Can/ 20140414

The latest thermal image by  MODVOLC shows still a significant heat signature on all islands.  The intensity appears to be almost equal  since  several months,and  is still also strongest around the Teide volcano summit and the Northern part of the island of Teneriffe :

 < MODVOLC Thermal alerts/ 20140414

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April 08- 11  2014

One quake on April 09 and again from 11 km depth. Since the yet first and only surface eruption occured late in 2011 no earthquake was registered from a depth higher than 10 km. This is, where the obviously large and wide mantle plume likely ends up at  the bottom of the caldera left from a earlier large shield volcano .  A caldera is understood an former magma chamber, resp the remnant of a magmabubble a hot spot can just builts up during activity phases  until that accumulated magma   finally broke through the crust and surface . Today`s Canary islands  sit on the edge of that former shield volcano, that once must have existed between today`s islands and the african mainland and which likely collapsed with  its last major eruption sometimes in earth history into a caldera .

A Caldera is much like a broken pot and no pressure usually can built up inside necessary for an surface eruption:  the uprising magma rather  finds still enough empty spaces ,fissures left form the last eruption  or can flow from the mantle plume into near  rifts, caves or trenches .

 The theory however wants to tell us about any magma chamber situated in any depth there that currently "fills up". I dont believe there is any magma chamber left . But there is a wide and intact mantle plume and the uprising magma  with a while likely will close and seal all fissures down there and begin  then to built up just a new magma bubble , which is understood then as a new "magma chamber"

EventoFechaHora(GMT)*Latitud Longitud Prof.
(km)
Int. Máx.Mag.Tipo Mag. (**)LocalizaciónInfo
126807110/04/201415:08:2828.3176-16.75992.0mbLgSE EL TANQUE.ITF[+]
126769109/04/201402:44:4227.7479-18.2841111.9mbLgW FRONTERA.IHI[+]

Latest deformation data show that the latest liftup process again came to a stillstand by now and that el Hierro even settled some centimeter down during the past week. The deformation is caused  by the decreasing but extreme gravitational force when magma  rises up form the Earth mantle in more than 30- 40 km depth  what leads to an extreme expansion of the updwelling magma . Such a  magma intrusion finally just forms new rock below the island., The deformation   is therfore irreversible.

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April 07- 2014


Hot spot activity increased again on April 07, with the latest quake in 11 km depth. :

EventoFechaHora(GMT)*Latitud Longitud Prof.
(km)
Int. Máx.Mag.Tipo Mag. (**)LocalizaciónInfo
126736707/04/201414:10:4727.7300-18.0183111.7mbLgSW FRONTERA.IHI[+]
126714707/04/201406:46:5927.6829-18.1976191.6mbLgSW FRONTERA.IHI[+]
126714507/04/201404:38:3428.2853-15.0743232.6mbLgATLÁNTICO-CANARIAS[+]


Again ,there is a minor Proton storm  going on since  April 05. Interplanetary proton flux is quite high, while the geomagnetic impact strength (integral proton flux) remained below 1 pfu, what means also that the first  solar protons emitted usually with higher speed , while the later  protons were slown down by the sun and impact  with a longer duration.

 ACCUMULATING SEP events: Protons from previous events are still active within the earth core , while  steady new SEP events are coming in one after another since several months now .  This is, why  the geomagnetic electron flux  seems meanwhile to be constantly very down by the proton influence and fell even in negative values . In real the gravity of these protons compress the integral electrons   and create a high tension comparable to a spring, that will unleash as soon if proton influence diminuishes and if no new SEPs should occure.

 < integral electron flux/ April 05. 07.- 2014

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April 02- 06- 2014

Volcanic activity was on low level during the past 4 days with 1 quake every two day in average. The  magma intrusion however seems to go on  on a minor level . As its is the case with the most volcano systems : If once awoken,( in terms of magma intrusion ) volcano activity  does not come to end end so soon. Allthough the Canary volcano system is not comparable to the most active volcanoes on the world, - also the activity there from the hot spot below El Hierro meanwhile  continues  for more than  3 years with  4 periods of increased activity, and low frequencies of earthquakes in between :

EventoFechaHora(GMT)*Latitud Longitud Prof.
(km)
Int. Máx.Mag.Tipo Mag. (**)LocalizaciónInfo
126691605/04/201400:07:2827.6658-18.0504211.5mbLgSW EL PINAR.IHI[+]
126690204/04/201420:38:3028.7157-16.9141401.6mbLgATLÁNTICO-CANARIAS[+]
126667403/04/201421:21:2227.7263-18.0152111.5mbLgSW FRONTERA.IHI[+]
126667203/04/201420:02:5827.7516-17.9599241.6mbLgE FRONTERA.IHI[+]

HARMONIC TREMORS


also decreased on all islands and are still ( relatively!) highest on Gran Canaria:

at all, the activity is currently very low and there is currently also no reason to worry about anything like a surface eruption . This- as we know-  can change again in the near future . I will continue to monitor the evolution there and post new updates  as soon as a new phase with increased activity  should take place.

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April 01- 02- 2014

SPECIAL REPORT:


A major Seaquake occured OFF the Coast of Tarapaca /Chile:


The region was the site of an intensive Earthquake swarm that continues since several weeks, and the 8.0 quake just marks a new peak in this activity that seems to be related to ( or to be the rsult of) intensified  tectonic movements and changes all along the entire Pacific coast as well as on a global scale





000
WEHW40 PHEB 020346
TSUHWX
003-005>009-012>014-016>021-023>026-020546- /O.CAN
HIZ001 >.PHEB.TS.Y.0001.000000T0000Z-000000T0000Z/
00Z/ TSUNAMI MESSAGE NUMBER 6 NWS PACIFIC TSU
/O.NEW.PHEB.TS.Y.0001.140402T0345Z-000000T0 0NAMI WARNING CENTER EWA BEACH HI 546 PM HST TUE APR 01 2014
DVISORY A TSUNAMI ADVISORY IS ISSUED FOR
TO - CIVIL DEFENSE IN THE STATE OF HAWAII SUBJECT - TSUNAMI A THE STATE OF HAWAII EFFECTIVE AT 0545 PM HST.
PARAMETERS ORIGIN TIME - 0147 PM HST 01 APR 2014 COO
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINAR YRDINATES - 19.8 SOUTH 70.8 WEST LOCATION - OFF THE COAST OF NORTHERN CHILE
GE LOCATION LAT LON
MAGNITUDE - 8.2 MOMENT MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY GA U TIME AMPL PER ------------------- ----- ------ ----- --------------- -----
0137Z 0.68M / 2.2FT 06MIN COQUIMBO CL 30.0S 71.3
JUAN FERNANDEZ 33.6S 78.8W 0215Z 0.16M / 0.5FT 36MIN SAN FELIX CL 26.3S 80.1 WW 0138Z 0.15M / 0.5FT 34MIN CALDERA CL 27.1S 70.8W 0102Z 0.11M / 0.4FT 30MIN CHANARAL CL 26.4S 70.6W 0133Z 0.24M / 0.8FT 28MIN
0127Z 0.58M / 1.9FT 08MIN PAPOSO CL 25.0S 70.5
CALLAO LA-PUNTA PE 12.1S 77.2W 0158Z 0.12M / 0.4FT 38MIN ARICA CL 18.5S 70.3W 0116Z 1.83M / 6.0FT 18MIN MATARANI PE 17.0S 72.1 WW 0125Z 0.26M / 0.9FT 22MIN PISAGUA CL 19.6S 70.2W 0055Z 2.01M / 6.6FT 12MIN MEJILLONES CL 23.1S 70.5W 0103Z 0.86M / 2.8FT 34MIN TOCOPILLA CL 22.1S 70.2W 0109Z 0.42M / 1.4FT 10MIN
0005Z 2.11M / 6.9FT 12MIN LAT - LATITUDE (N-NORTH, S-SOU
DART 32402 26.7S 74.0W 0044Z 0.05M / 0.2FT 44MIN ANTOFAGASTA CL 23.7S 70.4W 0034Z 0.25M / 0.8FT 18MIN PATACHE CL 20.8S 70.2W 0015Z 1.51M / 5.0FT 10MIN IQUIQUE CL 20.2S 70.1 WTH) LON - LONGITUDE (E-EAST, W-WEST) TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME) AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL. IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT. VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
TSUNAMI IS NOT EXPECTED TO STRIKE THE STATE OF HAWAII. HOWEVER.
PER - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT. NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL MEASUREMENTS AT SIMILAR LOCATIONS. EVALUATION BASED ON ALL AVAILABLE DATA A MAJO R..SEA LEVEL CHANGES AND STRONG CURRENTS MAY OCCUR ALONG ALL COASTS THAT COULD BE A HAZARD TO SWIMMERS AND BOATERS AS WELL AS TO PERSONS NEAR THE SHORE AT BEACHES AND IN HARBORS AND MARINAS. THE THREAT MAY CONTINUE FOR SEVERAL HOURS AFTER THE INITIAL WAVE ARRIVAL. THE ESTIMATED TIME OF ARRIVAL OF THE INITIAL WAVE IS
0324 AM HST WED 02 APR 2014
S CONDITIONS
FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER A
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.OREGON...CALIFORNIA.






               

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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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