The situation in El Hierro is interesting but it is unlikely an eruption is already taking place because there are no reports of stains so far. We here on Volcanocafe have a soft spot for this island because the action there in autumn/winter 2011 was one big reason why this blog came into existence at all. So here is the newest information I could assemble today.
Sites were you can get information:
- AVCAN: http://www.avcan.org/?m=Noticias&a=noticia&N=955
- Manfred Betzwiesers El Hierro Blog in german: http://elhierro1.blogspot.com.es/
- Earthquake report: http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/
- A link found by Diana which has nothing new at the moment but could become an interesting source should the action continue: http://www.vulcanoelhierro.es/
Earthqake Report has a nice summary of the 2011 eruption. Reading this might bring back some memories.
Early february 2013 Involcano reported that there had been more vents to the west of the island. M Betzwieser reported.
I personally do not think an eruption is imminent because it took month of earthquakes till “Bob” became visible and watchable on the cams last year. But something is definitely going on and the information is by far not as good as in other countries like Iceland. Last year, while we all watched the spot of the shore of La Restina there was also an eruption of the west point of the island and if you watch the pattern of earthquakes it seems likely to me that something could go into action there again. But this is only a personal speculation.
Islander noticed the graphs have been downscaled! ( Just like it happened last year)
Renato Rio noted:
“Here is an image of possible emissions of gas Radonium from present activity in El Hierro.
I suspect we have a vent, and this time I really mean it.”
Manfred Betzwieser reported that the latest earthquakes happened in a depth of 13km and that the ship “Roman Margaleff” is on its way to the western tip of the island. ( Site is in german.)
A page had been created here last year called Wonder what Bob is up to. It contains a huge ammount of links and papers. Maybe some links are out of date (the cam links are for sure) but i do not have the time to check them all again. So maybe you people here could help me check and update them. Please leave a comment directly at “Wonder what Bob is up to” and i ll try to work in the “news” in a.s.a.p.
Here is what is stored there so far:
Wonder what Bob is up to?
Some links to monitor our Bob & his mysterious-though-as-yet-hidden friends at El Hierro:
- IGN El Hierro page with earthquakes, tremor plot, daily updates, etc.
- Two days of tremor plots by IGN for all Canary islands
- Map of IGN stations on El Hierro
- GPS deformation from IGN via AVCAN and Prof Takeshi Sagiya at Nagoya University, Japan
- AVCAN page and facebook forum
- INVOLCAN on facebook
- Spanish Oceanographic Insitute reports on the scientific campain of Ramon Margalefat El Hierro
- Localiza todo – ship finder to spot the sometimes elusive Ramon Margalef
- Daily MODIS Aqua/Terra photos of Canary Islands from NASA
- MERIS/ASAR imagery from ESA Envisat – search geographically to find radar images of Canary islands
- Real-time weather satellite images of Canary islands
- Weather observations – hourly readings for El Hierro Aeropuerto
- Water and air analysis reports (Spanish)
- IGN official petrological analysis of restingolitas (Spanish)
- Classification of IGN’s samples (by Lurking)
- Another Page about GPS variations by IGN.
- Accumulated energy IGN
- Air Quality AVCAN New
- Air quality in La Restigna at the very moment.
- Exel List of the Quakes for the plotters. New
- RSS feed El Hierro and su tarnsformation
- RTV Canarias (thx Jenny for the link): direct TV streaming or written news
- La Provincia – newspaper of the Canary Islands
- Canarias7 – digital newspaper of the Canary Islands
- La Opinion – another Canary Islands newspaper
- Diario El Hierro – digital newspaper of El Hierro
- El Hierro digital – another digital newspaper of El Hierro
- El Pais – Spanish newspaper, national edition
- A blog by Spanish volcanologist Jose Luis Barrera Morate
- Canary GPS data
- Geological Map of El Hierro
Info about Canary islands:
- Detailed map of Canary Islands – use Busquedas to find a particular place or check the 3D lidar model
- IGN variation of Google maps – Iberpix
- Geological map of El Hierro
- Volcanic history of Canary islands
- El Hierro – videos from the air
- Aerial photos of Canary islands
- Beautiful photos of El Hierro
- La Frontera webcam
- Hotel Ida Ines webcam
- Webcam Cabildo El Hierro
- Meteo las Puntas
- Mirrored Webcam Las Puntas
Most cams do not work anymore, i leave the links so… in case they might return one day.
Tanganasoga related info:
- Location on map and Google Earth picture (by Sissel)
- Longpre et al. 2009, Ankaramitic Lavas and Clinopyroxene Megacrysts From the Tanganasoga Volcano, El Hierro Island (Canary Archipelago), AGU 2009
Floating stones off El Hierro, Canary Islands: xenoliths of pre-island sedimentary origin in the early products of the October 2011 eruption. Published on solid earth net.
An eclectic collection of scientific papers related to El Hierro, as suggested by readers . Please, suggest some more:
- For those who are interested in the slides of El Hierro, a must read:
Urgeles et al. 1996, The submarine El Golfo debris avalanche and the Canary debris flow, West Hierro Island: The last major slides in the Canary archipelago, Geogaceta, 20(2), 390-393.
- Hierro and other Canary islands erupted through an old layer of sedimentary rock: Schminke and Sumita, 1998, Volcanic evolution of Gran Canaria reconstructed from apron sediments: synthesis of VICAP project drilling.
- Why El Hierro may have severe problems with plant growth, an analogue description from another volcano: USGS, Invisible CO2 Gas Killing Trees at Mammoth Mountain, California
- Carracedo 1999, Growth, structure, instability and collapse of Canarian volcanoes
and comparisons with Hawaiian volcanoes, Journal of Volcanology and Geothermal Research, 94, 1–19.
- Masson et al. 2002, Slope failures on the flanks of the western Canary Islands, Earth Science Reviews, 57, 1–35.
- Muenn et al. 2006, Gravitational spreading controls rift zones and flank instability on El Hierro, Canary Islands, Geol Mag, 2006, 1-12.
- O’Hara 1997, Volcanic Plumbing and the Space Problem—Thermal and Geochemical Consequences of Large-Scale Assimilation in Ocean Island Development, Journal of Petrology, 39(5), 1077-1089.
- Stroncik et al. 2009, The magmatic plumbing system beneath El Hierro (Canary
Islands): constraints from phenocrysts and naturally quenched
basaltic glasses in submarine rocks, Contrib Mineral Petrol, 157, 593–607.
- Sagiya et al. 2009, Continuous GPS observation in the Canary Islands for Volcano Monitoring.
- Vinuela JM 2007,The Canary Islands Hotspot (pdf)
- Carracedo et al. 2001, Geology and Volcanology of La Palma and El Hierro, Western Canaries, Estudios Geologicos, 57, 175-273 (large pdf file, 12M)
- Martin and Sigmarsson, 2005, Implication for the origin of tholeiitic silicic magmas from atmospheric pressure fractional crystallization of basaltic lava flows on Reykjanes peninsula (Iceland), Lanzarote (Canary Islands) and Masaya (Nicaragua), EGU 2005.
- Neumann et al. 1998, Evidence for Fractional Crystallization of Periodically Refilled Magma Chambers in Tenerife, Canary Islands, Journal of Petrology, 40(7), 1089-1123.
Name those Volcanoes Riddle
Note – this weeks riddle is a little different …. In order to identify each volcano you have to establish a link (some are more tenuous than others) between the volcano and various classifications, dates, places, events, people etc …. each clue has three genuine links and one ‘red herring’ included!
1 point for each correct volcano and 1 point for each ‘red herring’ (which must be identified with an explanation) guesses wont count ….. good luck!
No 1 – Lord Byron; November 5th 2013; Lethal mud slides; Pacific Ring of Fire;
No 2 – Stratovolcano; Canada; Formula 1; Angels;
No 3 – Stromatolites; 40,000; Rain forest; UNESCO; SOLVED
No 4 – UK; Dormant; Summer Rain; Vintage Car Museum;
IGN Graph showing latest ‘action’ 23.3.2013
582 thoughts on “Keeping a close eye on El Hierro and NtV Riddle”
4.1 quake at 14.41 depth 16km
It really wants to get out.. I think there is quite some pressure down there already. The raise of most part of the Island, the increasing strength of EQ suggests more influx is still going on. Ergo, the influx needs to stop or it will find a path.
BTW, the upward trend is broken, it tended to go more shallow, the latest 100 or so EQ being more deep on average. In contrast, the trend in EQ intensity is still going towards more significant. This tells me that the stuff down there is blocked quite heavily and finding a way out. It could go quick after some major EQs… Maybe right now.. looks ugly.
Take a look at
It is getting noisy (that one at 14:41 is a 4.1:
200452 25/03/2013 14:41:39 27.7688 -18.2360 16 4.1 mbLg W FRONTERA.IHI
Have they closed the tunnel on the island yet?
uuuuuu… that does not look good.
Now why would you say that?
negative irony, concern for the islanders, or only self promotion. take your pick ..
*nah, just joking in time of gave crises*
It was a rhetorical question. No answer required. Just thought.
yes, English speaking world out there, do not know or understand all these complicated words 🙂
Rhetorical question – a thought provoking question. Asked in order to further thought on the matter at hand. Asked for the sake of argument (a discussion sort of argument, not the slinging of clubs and nasty words, which is the other sort of argument)
The increasing magnitudes are a worrying sign, in my opinion. But I’m not an expert.
You need not be expert to be rightly worried in my opinion. Ever. Not worrying on the El Hierro seismic episodes, is not expert behaviour.
BTW, it seems the recarge rate has moved from every 3-4 hrs, to about 12 hours, then next “attack” comes at 02:00 ~ 03:00 hrs in the morning tonight.
On FB, Avcan there is now a kind of warning for all people to take care on the island…
“Currently it is produced a significant rebound of the seismic activity in all sensors of the IGN in El Hierro. Due to this and its apparent magnitude and importance, we recommend people home, that are attentive to any release that authorities could issue well by radio or by television, also remember self-protection measures starting to avoid places that may cause damage by falling objects given current felt seismicity and the increase of the same.
Please, for your own safety not forget report to IGN the vibrations that are feeling and their duration”
Translation by Bing.
Some news from Ramon Margalef :
(sorry if already posted)
Nice that they have now also a blog with a lot of information.
They are talking about having checked again first the region around La Restinga and Bob, but they didn’t register any changes there. And because the quakes are wandering from the El Golfo area to the area northwest of the island, they followed track.
Ain’t it a nice pattern??? look at 14:50 till 15:15 wave form.
How was the name of the phenomenon??? Tornillo?
Looks more like spasmodic tremor. A tornillo would be of a shorter duration and have a diminishing coda. Plus there is a saturation of the equipment.
So the blue one after 16:00 would be a tornillo, wouldn’t it?
seems too long for me
While everyone is watching El Hierro… Small Transient at Hekla at 8.00am this morning.
Hi Sam – thanks for keeping us reminded of Lady Hekla!
You’re welcome! I’m sure Hekla wouldn’t be happy if she was left out! 😉
was it Hekla? I wonder. Not showing on IMO main map are three small quakes, located in dead zone, last night. Maybe both of these transitients today (can be the same, as I don not know if they have instant travelling time or not) and last one at HEK some days ago, may have come from further away. I do not know why these Laki quakes are not shown onmain map, perhaps they were deemed false or not havng enough quality to shown).
I saw that – very small – but there was a little one earlier on. Hekla is definitely twitching, but will she go back to sleep or wake up?
Calling it now: Simultaneous El Hierro and Hekla eruption!
Not QUITE yet though!
At least if they did go together we would be able to SEE Hekla erupt. Mind you, if El Hierro actually erupts it will be well under the sea so even web cams wouldn’t show anything. We would have to wait for over flights to see any stain in the sea.
Brave call Sam ….
2013-03-25 16:13 UTC
– The University of Nagoya and Involcan have changed the scale of the upwards deformation … http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/
Meanwhile a satellite picture of Bob is well placed in NASA’s contest for best satellite picture of 2012: http://www.laprovincia.es/sociedad/2013/03/25/volcan-hierro-gana-enteros-concurso-nasa/521874.html
Is anyone keeping an eye on the VAAC sites?
I haven’t. Why?
Washington ran a test.
And alerts from Darwin: http://www.bom.gov.au/info/vaac/advisories.shtml
Sakura-jima has been exploding again, but as she is very often active … See: https://volcanocafe.wordpress.com/2012/10/31/sakura-jima-why-is-she-nearly-always-erupting/
I’ve double checked the small quake at 3km depth quake from yesterday morning and the depth hasn’t been revised. However, I guess with all the quakes since, a path hasn’t found it’s way to the surface and this was just a response to the ongoing pressure.
Would be interesting to see if more happens in this area, or if this is along the length of a fissure. Here’s the details to save you scrolling through the quake list 🙂
1199832 24/03/2013 08:52:45 27.8342 -18.2092 3 2.6 mbLg NW FRONTERA.IHI
171 quakes in the W Frontera and NW Frontera regions already today! That is so far the highest count for this recent episode of activity and 4 more hours to go yet. Quite a day as included in that number there were a total of 41 of 3+ magnitude and 2 quakes of 4.0 and 4.1 respectively.
something to relax from the tension of El Hierro
Kizimen appears today from his wild side 🙂
Thanks for this picture, I was looking for a new desktop photo.
uiiiiiiiiii Thanks 🙂
Pingback: Continued activity at El Hierro | volcanocafe
New post is up, a small update to the El Hierro activity with a fresh comment section to fill up!
Some Brittons seem to be p****d off of Winter, and they’re blaming us for it.
Here is a letter that was sent to Finnish embassy in London:
According to reports in today’s newspapers, the foul weather that we are experiencing in the UK is coming directly from Finland.
I respectfully request that you stop this unfriendly behaviour immediately. It is playing havoc with my plans for the garden, not to mention the heating bills.
I shall expect an improvement very soon, and will not accept any excuses! Thank you.”
Oh It’s OK Stoneyard I sent ones to Sweden, Norway , Iceland and Russia too 😀 😀 😀
I am not sure if this link has been posted yet.
It’s a brilliant interactive map of the canary Islands and included bathymetry and geology… alsorts .
Many thanks to Avcan for providing this useful tool Link to help understand and get to know more about the Canary islands.