Update: El Hierro & Iceland

Photograph showing Malpaso, El Hierro.

El Hierro

IGN and Pevolca have given us the final good bye of the volcanic vent affectionately known as Bob. It is the fifth time that they declare that the activity is dead. I also note that they claim that they “have put an end to the eruption”. I for one did not know that humanity could put an end to any eruption.

In the same missive they say that there is still tremoring and inflation going on, and that the earthquakes are ongoing. And I who thought this was signs that you should not state that an eruption had ceased.

On the contrary the volcano seems to have been rather active, and has by now reached a distance of only 88 meters from the surface. This with the above given signs make the Pevolca statement rather iffy in my opinion.

Another thing is that the low level harmonic tremor has steadily increased for a week; it is best seen on the EOSO and EGOM stations. This tremor at 0.59 and 0.3 respectively is a sign that most likely is associated with deep magmatic movement. Due to the wave-length a wave of such a low frequency cannot build in a narrow tube or small magmatic chamber. The increase probably means that new magma is moving upwards.

Either we should see new activity at the old vents around Bob, or a new vent formation will take place in the coming week or so.


Photograph by Ragnar Palmason. Showing red Brimstone in a volcanic cave of Brennisteinsfjöll.

After the medium sized earthquake swarm that took place at the MAR 20 km to the SSW of Reykjavik there have been reports of HS2 gas smell in the vicinity. The first one to report that was our own commenter Irpsit, who went trekking in the area of Lake Thingvellir. He reported strong smell on both sides of the lake, and that it numbed his nose within minutes. This tells us that the concentration was higher than is technically good for you. The danger with HS2 is that numbs the nose and then you can get into an area with poisonous levels of gas.

It is interesting that the gas emission rate in that area has increased after the 4.2M earthquake swarm. It probably means that in some way one of the volcanic systems in the area was affected since the area is rather large and requires more than a little gas puffing up to affect the nose in such away on both sides of the lake.

In reality there could only have been two volcanoes responsible for this emission, one of them is of course Hengill. Hengill is the largest of the volcanoes in that part of Iceland. But, I would like to make the culprit into Brennisteinsfjöll.

Photograph by Freysteinn Sigurðsson. The photograph shows weathered brimstone (sulphuric oxides) at Brennisteinsfjöll.

It erupted at 1000AD, 1200AD and at 1341AD. What makes into a likely culprit is that it is known to stink. The actual meaning of the name of the volcano says it all. Etymology is sometimes a useful science for volcanological purposes. Brennisteinsfjöll quite simply means Burnstone Mountain, or even more precisely, the Mountain of Brimstone.

Brennisteinsfjöll normally erupts in an effusive fissure style yielding between 0.2 to 3 cubic kilometers of lava. Two of the eruptions have VEI-2 numbers, the latest during 950AD. So if it erupts it should not be an ashy affair. At least at long as the lake does not get involved.


312 thoughts on “Update: El Hierro & Iceland

      • But still, it would show a high increase with thin lines if it was bad weather, this shows what? Harmonic tremor?

        • Btw, I remember reading somewhere that this station was around some geysir, and that it was so close to each other that the SIL station picks up the Geysir…

        • Good spot Karen! It looks very much like Godabunga or Grímsfjall (post 2011 eruption), two areas noted for high levels of hydrothermal activity. Now, if this is due to hydrothermal activity that does tell us a change has occurred, a change that has resulted in an increase in activity but not what the cause of that change is. Also, at some points, it looks similar to what Jon Friman in the past has claimed to be harmonic spikes. Would be interesting to have “the Word” on the changes at KVO.

      • Shouldn’t it be a “Schong” when coming from you? 😉
        Oh, it would be an honor to loose it against anyone who gave me a good and hard fight for it… 🙂
        Aaaaah. Number 6. I like it quite a lot. But 5 of course is something else. Carlos and I will tell you all when we’ll have switched, won’t we, dearest Carrrrros?

    • Ai se eu te pego,
      Ai ai se eu te pego…
      (I know it’s not spanish… But it seems just perfect in “our case”… ;-))

  1. Researchers who have been following the evolution of the magma revitalization of El Hierro and the eruption of La Restinga considered that the permanent monitoring of the island volcanic edifice has to keep at least for the next two years.

    Instituto Geográfico Nacional, the body responsible for the volcanic monitoring in Spain, will keep the entire instrumental that has been deployed in El Hierro as the magma reactivation process does not end, said yesterday the Director of IGN in the Canary Islands, María José Blanco, who also advanced that they continue the campaigns on the various parameters that were scheduled. The Instituto Volcanológico de Canarias (Involcan) will also maintain all of its permanent instrumentation on the island and the punctual measurements of gases and water from wells and planned galleries, yesterday said its Coordinator, Nemesio Perez.

    Ramón Ortiz, researcher of the Consejo Superior de Investigaciones Científicas (CSIC), has put even a term to continue to monitor the behaviour of the different indicators which demonstrate that low El Hierro magmatic revival has not concluded. The volcanólogo estimated that at least during the next two years he should continue with the monitoring of the island; the first year, he warns “without lowering the guard’. Volcanic processes such as El Hierro, says Ortiz, extend much in the time ‘human’, although from the geological point of view, he says, this is “nothing”.

    Similar view is Nemesio Perez, who warns that, as regards the underwater eruption of La Restinga, is only in a posteruptiva phase ‘that can last months or years’ if it is taken into account, recalled, preeruptive stage began “according only to criteria of seismicity» in July 2011 and”mid-2010″if it serves to deformation and gas emissions. Therefore warns the also responsible for the Department of environment of the Institute and for renewable energies (ITER), «the posteruptiva phase can prolong a lot».

    White, for its part, does not date to the termination of the monitoring in El Hierro, but yes it is clear that while parameters not again be at levels prior to July 2011 IGN will not lower guard.

    • Hi Judith, good find as ever x
      They’ve had an idea that something was going on since mid 2010…
      They’re suddenly moderating their (5th) proclamation that it’s all over…
      They’re under economic/political pressure to get the tourists back…
      So they’ve lowered the alert to “nothing to see hear, move along now…”
      Whilst pledging to maintain vigilance for at least a year…
      They’re competing for funding (in this time of austerity) with volcanologists on the mainland…
      The deep harmonic tremor seems to be on the up…
      EQs are continuing (in lesser numbers) but sometimes with unusual hypocenters…
      There has been at least 1 lull in EQs since this all began…
      Why am I reminded of the Great Lanzarote event of the 1700s
      They’re reading this rather wonderful blog…
      Wha’ ‘appened..?

      • canarias7.es

        Los investigadores que han estado siguiendo la evolución de la reactivación magmática de El Hierro y la erupción de La Restinga consideran que la vigilancia permanente del edificio volcánico insular se tiene que mantener al menos durante los próximos dos años.

        El Instituto Geográfico Nacional, organismo responsable de la vigilancia volcánica en España, mantendrá toda la red instrumental que ha desplegado en El Hierro en tanto el proceso de reactivación magmática no termine, aseguró ayer la directora del IGN en Canarias, María José Blanco, quien también avanzó que seguirán realizando las campañas sobre los distintos parámetros que tenían programadas. También el Instituto Volcanológico de Canarias (Involcan) mantendrá toda su instrumentación permanente en la isla y las mediciones puntuales de gases y del agua de pozos y galerías previstas, adelantó ayer su coordinador, Nemesio Pérez.

        Ramón Ortiz, investigador del Consejo Superior de Investigaciones Científicas (CSIC), ha puesto incluso un plazo para continuar vigilando el comportamiento de los distintos indicadores que evidencian que bajo El Hierro la reactivación magmática no ha concluido. El volcanólogo estima que al menos durante los próximos dos años se debería continuar con la monitorización de la isla; el primer año, advierte, «sin bajar la guardia». Procesos volcánicos como el de El Hierro, afirma Ortiz, se prolongan mucho en el tiempo «humano», aunque desde el punto de vista geológico, dice, «esto es nada».

        De opinión similar es Nemesio Pérez, quien advierte de que, sólo en lo referente a la erupción submarina de La Restinga, se está en una fase posteruptiva «que puede durar meses o años» si se tiene en cuenta, recordó, que la fase preeruptiva se inició «atendiendo sólo a criterios de sismicidad» en julio de 2011 y «a mediados de 2010» si se atiende a deformación y a emisión de gases. Por tanto, avisa el también responsable del departamento de Medio Ambiente del Instituto Tecnológico y de Energías Renovables (ITER), «la fase posteruptiva se puede prolongar muchísimo».

        Blanco, por su parte, no pone fecha al cese de la vigilancia en El Hierro, pero sí tiene claro que mientras los parámetros no vuelvan a situarse en niveles anteriores a julio de 2011 el IGN no bajará la guardia.

    • Thanks for sharing this Christina. I see it has 10 million views already- what a powerful media this is!

      • Here is something for you to ponder.

        When I was a teenager, you could but gasoline at about 23 cents per gallon.

        Now, in the US, gasoline costs about $3.65 a gallon. (station I spotted today)

        For the melt value of the silver in a 1964 era US quarter, you can buy just over a gallon and a half of gasoline.

        Granted, European prices are much higher, but most of the governments there have managed to crank up the taxes on it much higher than the US does.

        On average, the US consumer pays about 48.8 cents per gallon in taxes. (Federal, State, and Local).

        Based on a straight linear trend of consumption rate from 1960 to 2006, and extending out to 2012, the US consumes about 80,200,000,000 gallons per year. This accounts for an average of $39,137,600,000 in taxes on fuel alone per year.

        With the mandate of E10, and the subsidy boondoggle that entails (hello Archer Daniels Midland), the US driver has to consume an additional 1.4% in fuel just to travel the same amount of distance on non ethanol regular gasoline.

        This works out to about $555,706,288 in additional taxes that the Federal, State, and Local governments get from the lower energy concentration of E10 fuel.

        (E10 – 33,624,000 J/Liter vs Regular gasoline – 34,800,000 J/Liter)

        And now our dubious leader wants to push E15 on us.

        Gee… I wonder why?

        • All of the US fiscal problems would go away if someone had the guts to enforce European petrol tax levels on the spoilt brat is are the US petrol consumer (why the H should you pay less tax than everyone else?) EVERY single fiscal problem could be rectified in a single year. In the 1960s, US women spent more on cosmetic products annually than NASA on space flight, some even claim that US women spent more annually than the entire cost of the Apollo program. Americans really are unbelievably stupid as well as selfish.

          (Being deliberately provocative here)

          • There is a big difference in the US petrol consumer and the European petrol consumer.

            It’s not much, but it does come into play. For one, the distances involved. Personally, I drive about 38,000 miles per year (61155 km). My vehicle gets about 20 mpg (8.5 km/l) It’s my job. I do technical support. My district is about the size of the State of Connecticut. 5,543 sq mi (14,357 km2). And I am the only tech that covers it.

            Note, my principle clients are various state agencies

            At 20 mpg, that works out to about $1003.20 a year in taxes, just for fuel. A more efficient vehicle? Yeah, that would be fine if I could cram all the spare parts into it that I have to have available on site.

            There is a lot.. and I do mean a lot of open space from one city to another. My usage is higher than most Americans, but is paltry compared to the mileage that an over the road trucker puts in, hauling freight.

            Many European’s are within walking distance of the nearest pub. For me, nearest bar is a strip club. And it’s 2 miles away. The nearest real bar, is 4 miles away. I used to have to go help clean up the pedestrians that would get whacked on the four lane road that passes in front of it… speed limit 72 kph.

            An alternate question, seeing as your being deliberately provocative, is why any one would suffer a government that intentionally curtails the freedoms of it’s citizenry through the use of oppressive taxation? Semi-hidden taxation in your transport costs, the intentionally (poorly) hidden VAT taxes, and for what? What benefit does the government provide? Why all the need for “austerity measures?” Are the governments pissing away your money faster than they can yank it out of your wallet?

            Inquiring minds want to know.

            (Note, the US isn’t in any better shape, our per-capita debt obligation is worse than Greece)

          • Note… I intentionally with-held responding to the “brat” taunt. I know it for what it is.

            “Taxation without representation” is one of the things that spurred the US into becoming the US.

            Now we have “taxation with mal-representation.”

          • It’s all western civilization. Are Europeans that much better than Americans? Baaaah. It’s all mankind. We all basically have similar ways, the context makes us change a bit. Seen through the media some seem more naive than others. But isn’t it a bit naive to think all the European countries with all their historically fixed specificities will work as an entity?
            If I was living somewhere in the wild and having kms and kms to the next store, I’d go for a fat jeep rather than for a Smart for two…
            What die Europeans all mess up in Africa, Indonesia, andandand? Autsch…

          • Eh, I was just responding in kind. I took no offense at the brat comment.

            I went partially “Galt” a couple of years ago. Been accumulating skills that may be handy in the event the whole shebang falls apart. My plan is to head north into the region that my family has lived in since 1790.

            BTW, ya know what skill I chose to learn? Beer and alcohol manufacture. You can always string a trout line for food, but beer and alcohol can be traded for other stuff… and provide a nice entertainment venue. I don’t do it anymore, but I was able to get 83% by volume on a single pass through a reflux design.

            The first record I have of anyone from my family in the US, is a court case in 1790 over ten gallons of whiskey and a horse.

            That’s another … well, advantage of Europeans. Good luck finding much of anything here that has a history more than 200 or 300 years old. To us, “old” is Antebellum. (pre-civil war) Ulysses S. Grant burned my hometown to the ground when he went through in 1863. He used the capital building as stables afterwards.

          • I just think this whole difference shit, even if interesting, is highly overrated. Small cale example: Where I live people always want me to say if I’m more swiss german or more swiss french. As if our spot was not small enough. And there’s more difference between rural / urban than between linguistic groups, for example.
            There are good and bad everywhere and on every theme, no matter if women/men, black/white etc. Look in the eyes of the person in front of you, listen and talk, experience the actions behind the words, then build an idea of what/who this human could be. Well, erm, that would be the ideal case. I often have a first impression that I can’t shake off even if I’d like to…

          • Hi Geolurking

            in fact your mileage is very near what i did when I was a salesman or when I was installing and starting up water treatment plants. The difference is that when you’re doing business with your car your company can deduct some part of the taxes. Even using my car for personnal (ie going to work) use i can choose either to have a fixed tax rebate on my income, OR to deduct some money for each km (that’s what we call “real expenses”).
            anyway it is pretty much a conception of life : for US citizen moving “cheaply” is seen a fundamental right. The european states saw a good source of income. But things are changing this side of the pond as more and more people have to live far from where they work.
            Also it’s a conception of life : you speak in mileage per gallon. We speak in l for 100 km done. So you van is pretty greedy by european standards (11.8 l for 100 km), our cars usually are more around 6 l/100 km, even the vans….

          • “Americans really are unbelievably stupid as well as selfish.”

            Although you seek to include this insult under the guise of being “deliberately provocative,” it is still an insult. This is why I don’t post much anymore, being there is an undercurrent of anti-American sentiment here. These comments would not be acceptable anywhere if it were the other way around. At least most Americans have learned that.

            People are the same EVERYWHERE. We are all in it together.

        • 1 gallon = ~ 4,5 l.
          In Germany, we now pay € 2.- for 1 l of gazoline.
          Just for comparison…. 🙂

          • In west Wiltshire our petrol is quite cheap by UK standards (don’t know why). We pay £1.35 a litre. My rudimentary calculations make this US$ 9.58 a gallon. I do a minimum of 16000 miles a year.

    • I’d look quite carefully into the people behind this. The LRA has been going for nearly 30 years and when it started and Alice was in charge it gave me nightmares. Now Joseph Kony is in hiding in Congo with about 300 people. Why did the US not stop him 15 years ago? Are they just setting up another “bogeyman” now that Osama bin Laden is dead? Is it true that most of the money goes into the film makers’ pockets? I’m always wary of things that go ‘viral’ quickly.

    • Its probably winds I guess.

      Tonight the weather in South Iceland where I am is pretty much snowshowers. When the sky clears the wind is calm, but as soon as a cloud comes, the wind picks up with string gusts and snow.

      Hekla is a tease. I guess we will be caught by surprise when she erupts again.

      • I know all about Icelandic weather and éljagangur …

        But as Carl said some comments before, the weather doesn’t influence the small frequences (the red ones), just the others (blue and green at IMO). And there were some small spikes involving the red line. 🙂

  2. IGN’s update to GVP:

    “HIERRO Canary Islands (Spain) 27.73°N, 18.03°W; summit elev. 1500 m

    Instituto Geográfico Nacional (IGN) reported that during 29 February-6 March the seismic amplitude detected by every IGN station in El Hierro remained at very low values. Neither water discoloration nor activity was observed on the sea surface over the emission area. On 5 March, the Scientific Committee stated that the submarine eruption was over, but the volcanic process that started on mid July 2011 had not finished. The Canary Islands Government lowered the Volcanic Alert Code from Red to Yellow, maintaining a maritime exclusion zone around the emission area.

    Thirty four seismic events were located, most of them in the central part of the island, extending offshore to the S. Depths of the hypocenters varied between 7 and 24 km, and magnitudes were 0.1-2.1 (twenty eight events were magnitudes equal to or greater than 1). One of these events was felt by residents and had a maximum intensity value of II (EMS-98). GPS data did not show persistent trends in any horizontal or vertical components.”


    • About El Hierro…
      Caveats and limitations: these graphs show approx the last 1500 events; because that’s what Excel tm will easily handle; however, there is maybe some value in looking at the latest events; following on, these graphs do distort time, the events are plotted one after the other, so swarms and lulls in EQ activity are obscured; but we are talking about geological activity, and human timescales don’t mean much…
      Last 1500 EQs (>1.5) by depth
      Last 1500 EQS (>1.5) by longitude
      Last 1500 EQS (All mags) by magnitude
      The first 2 graphs show 27/10/11>present day, the 3rd shows 4/11/11 to present day…

      • Use the “Direct Link for Layouts” link on the page and you get just the plot with out the image management stuff.

        Nice plots!

      • Not trying to nit pick, just advise. I’m don’t even remember if Excel does it or not.

        Try to label what the units/scales mean on the plot. It aids in the user friendliness. Baring that, you did tell us what they mean, to that is a good work around if it’s an Excel thing.

        (Again, I can’t even remember if it allows that so I may be talking out of my arse)

        • Don’t know what version of Excel Schteve is using but you can find labelling of axes under Chart Tools: Chart Layout..

          • Thanks Karenz and Lurking, it’s always nice to get feedback.
            I didn’t label axes as thought it looked nicer without…
            The link tip will be useful, would be much better without the “bumph” around.
            I think I’m using Excel 2003, or whichever version comes with Windows XP.
            It’s a simple method that shows broadly where and how strong the EQs have been.
            As long as the program does as it’s told (does what I want it to even if I haven’t told it correctly) I find it very entertaining noodlin around with Excel. The first schpreadsheet I did was to optimise my annual leave from work. I work shifts on a six week rolling rota, so my leave is calculated in hours rather than days, depending on which day in the rota I start my time off, 2 weeks away from work can cost from 60 hours up to about 90 hours, ( I average 37 hours per week) 3days can cost from 5 to 24 hours. The system does work, we are closing in on the end of the leave year, it’s not as thoough I’ve been slaving away with no breaks, I’m barely in work for the next month and I have about 16 hours to carry over into next year…. 😀

  3. My eyes fog up when I see that people think that the phases of the moon affect happenings here on earth. Here are the distances of the moon from Earth:
    Shortest 225,740 miles 363,300 km
    Greatest 251,970 miles 405,500 km
    Average 238,897 miles 384,467 km
    The amount of sunlight hitting the moon and reflecting back to the earth makes no difference in the distance, gravitational pull or mass of the moon, so the area that is illuminated has NOTHING to do with anything. Kinda like shining a flashlight on a meatloaf and expecting it to become a steak.
    I’ve always thought that the distance of the moon from the earth would possibly affect earth changes. The difference between the shortest and greatest differences of distance of the moon from Earth is 21,174.1 km or 13,157 miles. Ok, I was going to give the percentage but I have exhausted my brain with this so far. But the variations of distance is not great enough to whatever, fill in the rest…Pain medications are kicking in and I didn’t realize it affected my math abilities ROFL.

    • Heh… I knew someone had brought that up.

      I wasted a good chunk of my life chasing this red herring. Is there an effect of the Moon on earthquakes?

      Yes. Even after I backed out (corrected) the dwell times at each position of the Moon on it’s orbit, there is a definite, observable increase in quakes.

      Excruciatingly small, so small that the signal never climbs above 2 standard deviations above the noise, but it’s there. Well, it looks like it’s there. But since it doesn’t pop up nice and clear, it could just as well be a noise artifact.

      Then it dawned on me…

      Even if I could prove that there was an effect from the Lunar/Solar/Earth alignment, how do you state (predict) where that will occur?

      So I looked at plate dimensions.

      You ever try to measure the dimensions of a plate? They are highly irregular in shape. My idea was that if I could identify the angle of the Earth’s crust that the plate occupies, I might be able to find a signal in the Sun-Earth-Moon alignments that match those angles. And if there was a signal, it would be caused by separate ends of that plate having different forces on it from the alignment.

      It was such a beautiful idea. One elegant physical theory… that turned out to be piece of shit.

      There was no signal in the data. I know because I looked. I looked at just the E-W angles. Nada. N-S angles. Nada. Diagonals, Nada.

      It’s not there. There is a small uptick in overall quake counts, but nothing that you can wave about in peoples faces. It is just as easily noise.

        • You are correct.

          What I was looking at were the gravitational attractions and the relative angles.

          I’m not going to reconstruct the stuff I was talking about, but here is a quick plot of about one years worth of data.

          Notice the absence of an uptick in the incidence of quakes. If there were a strong lunar connection, there should be an increase in quake activity at key days… like about 27.

          It ain’t there.

          • Lurking,
            This is a delicate subject.
            In chapater 14 of his excellent book “Eruptions that shook the world”, Dr. Clive Oppenheimer leaves such questions open, like “Do eruptive emission of carbon dioxide accelerate deglaciation and explain why deglaciation is so rapid?” He adds:
            “Much more empirical and theoretical work needs to be carried out to explore such possibilities, and the moderation of global volcanism through climate change remains a topic ripe for further research. Given that the timing of Quaternary glacial cycles is forced by subtle periodicities in the Earth’s rotational dynamics (about its own axis and about the Sun), one intriguing possibility is that Earth’s volcanoes are indirectly switched on and off (in a global statistical sense) by gravitational attractions of the Sun, Moon and other planets in the Solar System!”
            Intriguing indeed, isn’t it?

          • Yes, and like I said, it’s there, but extraordinarily small. Nothing that I can pull out with 30+ years worth of data.

            The big honking caveat is that it’s not my field of expertise. But it is good enough to prove that the phear mongering “it’s gonna erupt because the moon is aligned” horse shit is just that… horse shit.

            Dr. Oppenheimer has the skill and knowledge to prove that there is a link, much more so than I.

            I know that some work has been done with regards to the Island arc down near Antarctica, but nothing that you can point to as a proof. It was merely offered as an ephemeral explanation.

            I’m still waiting for that hallmark paper that proves the link. Until I see it, I am gonna take up the motto of the State of Missouri.

            “Show Me”

        • Dunno…… a very useful technique for finding a dropped contact lens. Swtich lights off and sweep the floor with a torch. Provided, of course, that you do not tread on said contact lens.

    • Don’t know for sure. It looks like more of what we have been seeing for a while but a bit stronger. Unfortunately I can’t get the spectrograms by hour for EFAM.

      It would be nice to know what CHIE looks like, if it were on the same setting.

  4. Reportedly… the CME has a southern polarity. This generally means that the storm will be strong.

    This sensor is at the L1 Lagrange point. Keep referring to it to watch it when it passes

  5. GeoLurking, you are spot on. WHY do we accept all this taxation when a simple exercise of logic tells us that much of it must be frittered away by “administrative costs” even if the remainder was beneficially expended to better our evereyday lives and not on a class of parasites as it actually is.

    • Agreed.

      I would like to take a moment to state what those fuel taxes are supposed to be for.

      Road and bridge maintenance. Which begs the question… why to they (as in a run of the mill generic government entity) keep having to pass more and more road and bridge funding legislation and throwing money at it?

      Interstate 35W collapsed a few years ago due to poor maintenance.

      Damn, I guess they used the money for something else.

      Simple reason, new roads and bridges get good PR and good PR gets willing voters. Every government representative that came from this area, since the time that the bridge was built until it collapsed, is, in my opinion, fully responsible for those deaths. They are the ones who had control over where the money was spent… and obviously, it wasn’t on bridge maintenance.

      You can find examples like this in every country, every municipality, and every hamlet. Until people start holding their government representatives accountable, it will continue.

      Sorry for the rant.

      • in these parts it is roads mostly which are a bone of contention, some pot holes are worthy of a fishing permit and wombat holes are a nightmare, there are many goat tracks as I call them because of distance in all fairness, some of them are called highways …now with the flooding there are slow boats to china, but that is life, many moons ago when video’s came out first I made one called Pot hole alley, showed it at a council meeting, they all laughed sort of, but it got fixed within 6 month. Petrol is expensive down here about 1.40-1.60 AU a litre, I do have a 8 cyl, a small car wouldn’t be able to take the roads to well and is not comfortable on a trip, a trip into town is a 60km round trip, I call it gods own country and one takes the good with the bad, just got inside from the slosh in the paddocks feeding animals, causeways and river is still up, have a large pantry, Fridge and freezers, my grandkids call it Oma’s shop, so no worries there

      • There’s a major bridge in UK called the Severn Crossing which was built in the mid-1960’s. The toll charged was supposed to stop when the construction costs were met. The toll increases every other year and the construction costs were met years ago. Now they say it’s for upkeep. The bridge to Skye also charged tolls but the islanders campaigned successfully for it to be treated like any other bridge – no toll now. I guess if someone started a campaign about the Severn Bridge and government thought it would mean lost votes then something would get done. But too many people say “Oh that’s just the way it is – deal with it”. When we had a protest about petrol charges about 10 years ago the country almost came to a standstill in about 4 days. Scared everyone! Including the protesters!

    • Will work on as long as a majority has the feeling to get more benefit than loss out of the system, or at least that the energy invested to change things is not worth the trouble (we like “security” / “stability”, don’t we…)…
      Parasites is a very good work. Look at the “classe politique’s” salaries compared to hard working people. Ugly thing.

      • they have the idea, that it takes persistence, sitting power, bull shit excellence and should be adequately re-numerated so they feel they are different from the common constituents , the is the last of my rants

    • Ruminate regarding. ..
      I wonder why the most volcanic/tectonic events takes place on yellow/red areas…or due to them these areas look like??

      • Can’t access the video. What is this yellow/red representing?
        The location of seismic / volcanic activity is the result of plate tectonics and mantle convection / plumes. Basta. I’m wondering what makes you ruminate. You have my full interest.

        • It’s the geoid, spinning as if it is a malformed globe. The elevation is exaggerated to reflect the lumpiness in the mass distribution. (that whole Iceland is higher than it should be thing)

          The downside of the idea of “most” activity being in the yellow and red areas is a bit misplaced… but not much. Southern California is blue, and the Rift valley in Africa is in a mostly blue area.

          That’s a clue.

          Socal is dominated by a transform fault (San Andreas) and the Basin and Range province. The rift valley in Africa is a spreading/rifting region, as is the Basin and Range province. (the crust thins) Additionally, the Cascade volcanoes are all in a blue region.

          As for why… well, I can offer an idea, but it’s probably wrong. Indonesia has a large segment of oceanic crust diving beneath what is in essence, more oceanic crust.

          Oceanic crust is denser than continental crust. Europe has had a couple of opening and closing events in the past… well, distant past, there could very well be a few chunks/slabs of crust layered up underneath it… slowly drifting down to the slab graveyard. The downside of that idea is that the remains of the Farallon plate are believed to be underneath the East Coast of the US, yet it still shows blue.

          Geoloco may have more insight than I do. I just repair stuff and drive around all day.

        • Thanks for the new link. Truly nice representation of our potato.
          Lurking, I studied geology, sedimentology, paleontology, mineralogy, petrography, and in parallel we had quite enough physics, chemistry, maths, biology andandand during my academic cursus. I even managed to get experience and a quite correct job as a geologist. On the field I think I “see” things quite fast and clear. But there’s nothing I know more than you. Intelligent people get the knowledge. Academy helps you to get it in a structurated way and to have a complete and well founded view. It tests you and you have some kind of “proof” that you have a minimum skill in using your brain. But someone interested in a topic and digging in it for years can overtake “oh so specialized” pros of a domain. You beat the hell out of me whenever you want in many fields of geology. Don’t tell those who rely on me… 😉
          I say it in few words as time is short: there sure are explanations for all the yellow and red, but there’s no valuable correlation with “activity”. Tectonics / volcanic contexts may explain much of it, but the link to “activity” as such is poor from my point of view.

      • the blue are ocean’s, the yellow are masses which are pushed up or ahead of a plate, and red are the ones which are actively doing it

  6. I am with high hopes to see strong northern lights tonight, with a major solar storm arriving at the Earth. So far, it hasn’t arrived yet. But the weather forecast does not look very good. Similar storms have resulted in northern lights visible far south.

    • Avcan FB strong reply from someone in Spanish then translated into English.


      IPRESIONANTE INFORME!!!! ME GUSTA NO, LO SIGUIENTE!!!! joder un informe en condiciones y sin marcas de agua que no te dejan ver nada

      IPRESIONANTE REPORT! I LIKE NOT, AS FOLLOWS! fuck a report on conditions and without watermarks that do not let you see nothing (Translated by Bing)

    • Thank you Judith!

      Something is indeed odd with the report. And also with the data.

      First of all, why only 36 measurment points? Why did they do a conductivity analysis (pretty much) only?
      Why did they not do a new bathymetry? Yes they seem to have done spot dopplerometry on the bottom depth (soundings), but no MBSSSS was done apparantly (Multi Beam Side Sweep Sonar Scan). So there is no way to see if there is any growth on the volcanic edifice. Instead we just get that it is 88 meters from the surface, and that the growth has been top only.
      Top only of what? Is it Bob growing? Is it parasitic Bob? Is it the transwerse fissue (new) that was spotted on the last bathymetry?
      Yes it is nice to see that the conductivity and PH is the same as last time… But still…

      To me this is jut a lot of words with almost no new data being presented.
      Earlier the bathymetries where the best sollid data we had, now we get nothing. Phaw!

      • Parts translated from Spanish.

        it more remarkable of the campaign to from of the results obtained of the stations basins and of the studies of dilution has been: 1. the pH registered in
        the first 25 meters of depth reached values in lathe to 6, two units lower to
        it normal. this indicates that the acidity of medium in the area of the Restinga
        surroundings of volcano and sea of the calm, is be very high.
        2. the pressure partial of CO2 reached values higher to 27000 — micro atmospheres
        (conditions normal on the 390 — micro atmospheres),
        and the carbon inorganic total registered was the double of it normal between
        — 3000 3500 micro—moles/kg of water of sea; by it that the area is behaving
        as a source of CO2 to the atmosphere

  7. It’s a bit primative but… Egom spectro up until 1100utc yesterday (left) and today.
    Shows definate increase in low frequency tremor…

          • If I only knew what a Blue Peter badge was… Having a serious moment of confusion here. But I guess it is a good thing, so here you get one 🙂

          • Back to my childhood many many moons ago there was a childrens Tv programme called Blue Peter where the hightest accolade a child could get was to send something into the programme and be mentioned on Tv and given a Blue Peter Badge live on air.

            Now 45 years down the line I have been awarded by Volcanocafe a badge my own Blue Peter .

            Which I am sure futher down the line will be taken back from me in pure exasperation from Carl on some of my posts LOL. x

        • That cone looks pretty steep; the angle is >45 degrees on the lower part.

          Judith & Carlos B should get badges.

          • Yepp, they should get badges.

            Look at the profile on page 9… I would say that is shallow.
            We should though remember that it all started as a stratovolcano, and the foundation of it is likely to have some traits of one still. But now it seems to be building towards a shield volcano of the sub-aquatic type… Explanation forthcoming in a post soon.

  8. Results
    The main morphological differences found in this new survey conducted over the previous 15 days ago are:

    A succession of cones between the primary and secondary cone comprising a ridge NNW-SSE direction coincident with the axis of Rift south of the island.

    A slight increase in volume of deposits of the upper and especially in the cone that have brought this dimension to the 88m depth.
    From the point of view of volcanic activity observed in the column include a significant reduction in the presence of feathers of issue and the disappearance of noise in the echograms.

    In the new survey clearly shows the alignment of the different active emission points giving rise to a peak of 675 m long, which follows the direction SSE-ESF. Throughout this ridge depth increases in the direction 154 °
    The highest point of the volcano is located at 88 m depth, representing an increase of 32 m from the last bathymetry performed on days 7 and 8 February.
    The coordinates of the main summit remain: 27 ° 37.18 ‘N, 17 ° 59.58’ W
    The slope of the volcano slope varies between 26 and 33 degrees, with the largest outstanding at the side surfaces SW and lying to the SE.
    Fig 4: In the lower right corner of the volcanic edifice MDE (Aerial View). At the top right oblique view from the South Cone (The points are obtained with multibeam probes). On the left probes covered by the volume which cuts the top and is shown represented in yellow on both right side view of Fig.

    Broadcast material deposits that extend along the canyon that houses the new volcano have not experienced any variation has been observed and only increase in volume at the peak of the volcano.

    Emission Zone
    Only at the apex of the main cone and to a lesser extent at some point of the ridge, there has been alteration of the column emission plumes. It should be noted that feathers registered in this campaign until ascend vertical surface which suggests that they are less affected by advection phenomena. This could be explained by a faster rise of broadcast material that could be due to a decrease in the density of the material expelled.

  9. So sorry I’m not able to understand google translated english. There are just too many uncertainties. – Is anybody sure what this exactly means?

    “A slight increase in volume of deposits of the upper and especially in the cone that have brought this dimension to the 88m depth.”

    • It is a convoluted way of saying that the slope has a shallow angle now. It is for all point and purposes a shield volcano now. So the lava extruded do not run fast downslope, ie. it stays and cools at the top, building height quickly on the volcano.
      Also not in Carlos translation that they mention that the lava is of low weight and is fluid. Another way to say it, it is basic hot basalt. So it is less gassy, flow easily through a smooth tube.
      Another way to say it is that now Bob is pushing fresh deep magma since all of the old is cleared out. It explains that Bob is erupting very silently. So, we can no longer rely on CHIE or quakes to judge the activity. Only way to do that is via bathymetry and the 0,59 and 0,3 Hz tremor on EOSO and EGOM. And the last has picked up steadily since this latest bathymetry. Bob is going, do not believe anything else. And we will get the proof of that in 2 weeks when the next bathymetry comes along. But this bathymetry pretty much already proves that IGN was wrong.

      Question, what will IGN say in about 2 weeks when the eruption starts to give surface explosions? It should do that as the height passes 50 meters really. And at the going rate of 36 meters per 14 days we will have a depth of 52 meters next time around.

      Also, I have a good question. In the original eruptive reports the angle was steep for the slope of the volcano, so all calculations I have seen has been done on a steep angle cone, but where and when did all of this lava come from that transformed Bob from a stratovolcanic cone, to a shield volcano? Conclusion, the rate of materials ejected since january must have been much larger then reported. Nothing else is logical.

      • But the angle of the cone is steep in the report leg11 (see Carlos B’s comment above).

        So are still we talking two eruption points / two types of lava?

          • But with that angle it can still be a stratovolcano; from what I can tell (difficult as I can’t read Spanish), the growth has been limited to the cone area.

  10. Aclaraciones:
    El equipo investigador embarcado a bordo del B/O Ramón Margalef durante esta nueva fase Bimbache Leg12, quiere dejar constancia al PEVOLCA que los resultados preliminares obtenidos muestran que las condiciones físico-químicas del agua siguen afectadas y de forma significativa por la acción del volcán submarino. Esta afección, ver mapa Figura 1, no se limita a las inmediaciones del volcán submarino, sino también en las estaciones más cercanas a la costa herreña, incluso en la realizada a tan sólo algunos metros de la entrada del puerto de La Restinga”.

    ‎”Clarification: the research team embarked on Board of the Ramon Margalef B/O during this new phase Bimbache Leg12, would like to record to the PEVOLCA that the preliminary results show that the physico-chemical conditions of the water are still affected significantly by the action of the submarine volcano.” “This condition, see map figure 1, is not confined to the vicinity of the submarine volcano, but also in nearby herreña coast-to-coast stations, even in performed just a few meters from the entrance of the port of La Restinga”. (Translated by Bing)

  11. ‎1130977 08/03/2012 11:02:02 27.7802 -17.9438 26 1.4 4 SW VALVERDE.IHI [+] info ,que paso con este??
    See Translation

      • There hasn’t been a published EQ in the series from 19/07/2011 here. But there have been “stragglers” dotted around the main action throughout, so may just be another one of these. We just have to keep watching to know if it is anything else.

  12. judith says:

    March 8, 2012 at 13:49

    Parts translated from Spanish.

    it more remarkable of the campaign to from of the results obtained of the stations basins and of the studies of dilution has been: 1. the pH registered in
    the first 25 meters of depth reached values in lathe to 6, two units lower to
    it normal. this indicates that the acidity of medium in the area of the Restinga
    surroundings of volcano and sea of the calm, is be very high.
    2. the pressure partial of CO2 reached values higher to 27000 — micro atmospheres
    (conditions normal on the 390 — micro atmospheres),
    and the carbon inorganic total registered was the double of it normal between
    — 3000 3500 micro—moles/kg of water of sea; by it that the area is behaving
    as a source of CO2 to the atmosphere

  13. avcan FB Comment

    And what hope new images and reports, we can read this interesting document that I found on the website of the University of the Palmas of G.C.(supongo_que_ael_estar_en_internet_en_abierto_se_puede_enlazar) LAURA BECERRIL CARRETERO approximation A LA dangerous VOLCANIC and their effects in areas coastal EN LAS Islands Canary LAURA BECERRIL CARRETERO tutors: Inés Galindo Jiménez Francisco José Perez Torrado MASTER in OCEANOGRAPHY biennium 2007-2009 University of LAS PALMAS DE GRAN CANARIA 18 of December of 2009 http://acceda.ulpgc.es/bitstream/10553/4595/5/0616540_00000_0000-1.pdf (Translated by Bing)

    • With the little Spanish I understand the above link is very interesting and has maps and graphs to follow.

      Have tried to translate some pages but cannot on my laptop hopefully some of our fluent speaking Spanish colleagues will be able to translate the jist of this paper.

  14. Any one able to read the horizontal and vertical units on the profile view of ” BOB”. Difficult to sense the distorted view as to slopes. The plan view suggests that the vent has formed a ridge line to the SSE.

    • On the graph (red lines on black backgound) of the cone, I make out the dimensions to be roughly 35m high vs 140m base. The graph is to emphasise the recent growth so it is not showing the dimensions of the whole edifice.

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