Traducción en español a continuación
Over my lifespan, I have looked at seven eruptions in progress, small and large, both from land or from airplanes. The first I witnessed was the Surtseyan one (1963-1967), looking at it from the mainland via binoculars it looked beautiful, the plume rising high from the sea, ash mostly fell into the sea, and visble at night were the lightnings, plenty of them on some nights. This was not dangerous eruption as it was far out in the ocean. Hekla in 1970 also posed no real threat to the population, it was mostly lava running on desolate ground and in the high mountains. Ash fell on farmland, this affected sheep and other livestock, mainly Fluor chemical poisioning accumulating in the grass and in ground-water. Gases were about near the volcano. All Hekla eruptions produce gases. Some volcanoes more than others.
Keep livestock indoors if possible. The next one was potentially dangerous, for the people living in Heimaey Island, 23 January 1973, waking up in the middle of the winter night with the eruption just on the edge of town, a bare hundred meters from the nearest farmhouse. It was not predicted and took nearly all by surprise. But the Police, the Almannavarnir Agency (now under State Police Commissioner) and the local rescue teams moved every un-needed person away on the very first night. Only needed ones and reporters stayed behind. They also arranged for domestic aircraft and military helicopters flying an “air-bridge” but mostly used the fishing-boat fleet, as it was in Vestmanneyjar-Heimaey harbour due storm the previous night, then sailing in rough seas to the mainland. In next few days a passenger liner and cargo ships were also sent to the island, a ship was used as base for rescue persons and the cargo ship moved out cars, furniture, or just about all machinery they deemed wirth to be moved. A few US Navy cargo planes helped later with furniture moving but USAF helicopters helped
move stretcher patients from the hospital already in the first night. Some days later an live TV broadcast was started. Everything worked, but it took several years for the people to move back and have everthing normal as before. I took a few photos on my first visit there (in 1974), then almost everything was still covered with black ash and pumice. And the lava was still warm.
Living in the city, Reykjavík, this affected me too. My father woke me up that morning but I did not have to go to school – it was used as registration center for the people moved out from Heimaey – mostly by boat (and then buses to the capital). This situation lasted some days.
Eventually all got new places to stay and school was open again. Since then I have watched many volcanic eruptions, including Fimmvörðuháls and Eyjafjallajökull in year 2010, and not to forget last years Grímsvötn. I went part way there to have a closer look but staying in safe area and returned early as ash was heading my way. Near the edge of the ashfall one could feel the ash in ones eyes and in ones teeth. I always have a bag with some spare clothes on my travels, and a mask (like the one you see doctors use in hospitals but also worn by workmen breaking rock with air-hammers). They wear a mask! I drove away before having to put it on. Also I never needlessly go under an ash plume, there is risk of lightning strikes, besides ash can damage auto engines and everything mechanical. Going about in areas of ashfall, one must use a mask and goggles, and have clean water ready to clean ash, if it gets into ones eyes.
Here is how Icelanders prepare (official website)
Volcanic Eruptions Precautions (English):
http://www.almannavarnir.is/displayer.asp?cat_id=137
Escape / Evacuation / Departure (English):
http://www.almannavarnir.is/displayer.asp?cat_id=136
Earthquake and Lightning hazards (English):
http://www.almannavarnir.is/displayer.asp?cat_id=140
http://www.almannavarnir.is/displayer.asp?cat_id=138
Wow, this is big lists, but very carefully compiled. These are my countrys official website.
Below is my personal writings. It may be regarded secondary and rather personal. My first “number one” is GAS. It can be odorless, tasteless and lethal. Simply stay away if possible. If not able to go, do not stay in the cellar or on ground floor. Have windows open and let air blow about the house. Have fans turned on to refresh air, preferably from the outside. Stay and sleep as high as possible, avoid going needlessly into low areas, depressions in the landscape or earthquake-cracks. Do not go into old tunnels or caves. Do not travel alone, and let others know of your travel plans.
EARTHQUAKES – I have experianced a number of them, and these can be dangerous, especially in old brick or stone buildings, but safest are considered houses made from wood or properly steel-reeinforced concrete. Then the rule is have doors to internal rooms open (i.e. not locked) then they are less likley to jam (closed) and it is advised on hold an exercise how and where to exit the house or apartment if it becomes unsafe. But first, stay, do not run.
If quake hits (5,0 M) then stay in a corner, under a strong table, or stay put in a doorway.
Always watch for falling objects. Avoid having things fall onto you in your bed. Check if everybody is allright in your house afterwards. Volcanic Earthquake risks are rather low, tetonic quakes are the ones that can be dangerous.
VOLCANIC ERUPTIONS – Generally people should not live on volcanoes. But most islands are old volcanoes. If faced with an onset of eruption, best is to leave and stay some place else. If that is not possible, be prepared. There are many ways to prepare. Think first. Perhaps make a list of what one needs doing and when to do it. Where will I go, when and how. Is it safe staying. Think of dangers on staying put. These questions I can not answer here. Please, Consult Your Local Emergency Plans (on internet) or find out before anything happens.
If unable to go to a safe location beforehand, please use my text as rough guide only.
It is not perfect and I am not expert on this matters. My experience is listening to the State Radio broadcasts relative to several emergencies and how others react to the emergency. My training and experiance is several first-aid and fire-fighting courses and then flight search for lost airplanes, and carrying and caring for several severely wounded from several accident locations.
Preparing can be done in many ways. One is to have bag at ready with a few spare clothes, passport, money/credit card, water, medicine, small medical kit to mend cuts and bruises, hand-held (battery powered) radio, flashlight and batteries, have mobile phone charged beforehand and bring along the charger, have good shoes or boots, also warm-hat, pair of good gloves, a raincoat, blanket or sleeping-bag for everyone, an umbrella etc. Do not overload car with heavy furniture or other unneeded stuff. That can wait. Perhaps take along some personal papers or other light stuff, like small cosmetic kits or electric razor. Basically only things for travel and have perhaps limit on one bag for each. Have pets is their usual (portable) travel cages and bring along food and water for them, and also have small amount of “instant food” for the travel. Here I am referring to food that does not need cooking. Think choclate bars, fruit etc. Sandwitches or light snacks can me made before leaving. Have photos and complete list of all family members (including pets) in case family gets split up (this can be saved on smartphone). Leave a written note behind on travel plans. Exit your house in safe mode (generally leave one light on by front door and freezer/cooler in normal working order, or turn it off if empty). Turn all other appliances off, including TV (by removing socket from wall connection, reducing risk of lightning strikes). Leave heating on in case of frost can damage waterpipes. Have vindows closed and shutters secure. If moving away by car, have car checked at beforehand for it having enough fuel, water and oil on engine. Carry car keys in pocket at all times. Some of abowe mentioned items can be stored in the car trunk beforehand, and car can be used as shelter, if house becomes damaged or unsafe. Do not run, go (drive) away slowly and give lift to/help others if seats allow. One tip I use if using car as shelter is let engine run at idle for about 15 min (for heating and battery charging) then switching off for 30 min (depending on outside temperature). This way save a lot of precious gasoline.
Here in Iceland we know we can trust the Almannavarnir and the Icelandic Radio (RUV) for warning data, they are notified by direct calls from the IMO, the Police or the University Earth Scientists. The IMO volcanic earthquake data (including warnings) is online and can be viewed at all times. It is very effective system and used on regular bases. It is normal part of life here. If anthing happens, the resuce teams are on watch 24/7, all days of the year, in all areas. And they have the equipment they need, including 4×4 jeeps, snowmobiles, ambulances, rescue helicopters and rescue and coastal patrol boats. There are emergency plans already in stock regarding Katla and have been used on Eyjafjallajökull eruption. We also have risks of storms, blizzards, avalances, lightnings, floods, earthquakes, eruptions, fires, chemical accidents, large airliner crashes etc. Here there always are pre-planned assembly points for the rescue services and affected people – generally in schools or similar buildings – and the rescue services and Almannavarnir make announchements on the RUV FM “Radio 2” (Rás 2) and what to do in each case. They have all the info and instructions (we do not have all). We trust them. Generally wait for instructions on the radio, this may give vital clues to what is going on. Do not use mobilephone or make any unneeded calls.
Save on power if possible. Stay in safe area is the best.
ISLANDER
Como los islandeses se preparan para una erupción – Un testimonio personal
Durante mi vida, fui testigo de siete erupciones en curso, grandes y
pequeñas, tanto desde tierra como desde aviones. La primera que vi fue la de Surtsey (1963-1967) – mirando desde la parte continental a través de binoculares, se veía hermosa – la pluma elevándose desde el mar, una profusión de cenizas que en su mayoría cayó en el mar y en la noche, los relámpagos, un montón de ellos en algunas noches. Esta erupción no fue peligrosa, ya que estaba muy lejos en el océano. Hekla en 1970 tampoco ha representado ninguna amenaza real para la población: era sobre todo la lava a correr en un terreno desolado y en
las altas montañas. La ceniza cubrió la tierra, afectando a los
rebaños de ovejas y otros animales, principalmente debido a la
intoxicación química por el flúor que se había acumulado en el césped y en las aguas subterráneas. Los gases se concentraron cerca del volcán. Todas las erupciones del Hekla producen gases. Algunos volcanes, más que otros. Si es posible, usted debe mantener el ganado muy bien protegido.
La próxima erupción fue potencialmente peligrosa, porque los
habitantes de Heimaey, el 23 de enero de 1973, fueron despertados en medio de aquella noche de invierno con la erupción justo en el borde de la ciudad, a unos cientos de metros de la granja más cercana. La erupción no se esperaba y se llevó casi todo el mundo por sorpresa. Pero la policía, la Agencia Almannavarnir (ahora bajo la jurisdicción de la Policía del Estado) y los equipos locales de rescate hicieran el traslado del sitio, ya en la primera noche, a todos aquellos no aptos a ofrecer ningún tipo de ayuda. Sólo aquellos considerados útiles y los periodistas se quedaran allí. Para el transporte fueran ordenados aviones civiles y helicópteros militares que volaban en una especie de “puente aéreo”, pero la más utilizada fue la flota de barcos de pesca anclados en el puerto de Heimaey-Vestmanneyjar a causa de una tormenta que pasó la noche anterior, que entonces navegaran por los mares agitados hacia el continente. En los días que se siguieron, un barco de pasajeros y buques de carga también fueron enviados a la isla; el
barco fue utilizado como base para el personal de rescate y los buques de carga transportaban autos, muebles, maquinaria, sólo lo considerado esencial para el transporte. Más tarde, algunos aviones de carga de la Marina de los EE.UU. ayudaran en el transporte de muebles, mientras que helicópteros de la Fuerza Aérea ayudaran en el traslado de los pacientes hospitalizados en camillas, en la primera noche. Unos días más tarde, comenzó la transmisión de TV en vivo. Todo funcionaba bien, pero le tomó varios años para que la gente regresar a la isla y su vida volver a la normalidad. Tomé algunas fotos de mi primer visita al sitio (en 1974), cuando casi todo aún estaba cubierto de ceniza negra
y piedra pómez. Y la lava todavía estaba caliente.
Viviendo yo en la capital, Reykjavik, el evento me ha afectado
demasiado. Mi padre me ha despertado en aquella mañana, pero no tuve que ir a la escuela – esa fue utilizada como centro de información para las personas que emigraron de Heimaey – en su mayoría en barco (y luego en bus a la capital). Esto duró unos pocos días. Finalmente todos fueron recibidos en nuevos lugares y la escuela fue de nuevo abierta.
Desde entonces, fui testigo de muchas erupciones, incluyendo
Fimmvorduhals y Eyjafjallajökull , en 2010, por no mencionar la del Grímsvötn del año pasado. Fue hasta la mitad de la carretera para verla más de cerca, me quedando en un lugar más seguro, pero tuve que regresar antes del tiempo debido a la ceniza que venía hacia mí. Cerca del borde de la nube de cenizas podía sentir la arena en mis ojos y dientes. Siempre llevo una bolsa con unos cuantos cambios de ropa en mis viajes, y una máscara (como las que usan los médicos en los hospitales, o los trabajadores que operan con martillos neumáticos).
Llevan la máscara! Ya me había alejado con el coche cuando fui a
ponerla. Además, nunca me paso dentro de una nube de cenizas sin
necesidad: hay riesgo de rayos, y además el hecho de que las cenizas pueden dañar los motores de los coches y todo lo que es mecánico. En el tránsito en las zonas de caída de ceniza, se debe utilizar una máscara y gafas, y siempre hay que tener disponible agua limpia para lavar las cenizas de los ojos.
Here is how Icelanders prepare (official website)
Volcanic Eruptions Precautions (English):
http://www.almannavarnir.is/displayer.asp?cat_id=137
Escape / Evacuation / Departure (English):
http://www.almannavarnir.is/displayer.asp?cat_id=136
Earthquake and Lightning hazards (English):
http://www.almannavarnir.is/displayer.asp?cat_id=140
http://www.almannavarnir.is/displayer.asp?cat_id=138
Ufa, esto es una gran lista, pero compilada con mucho cuidado. Este esel sitio oficial de mi país. A continuación se presentan mis escritos personales. Se puede considerarlos como secundarios y algo personales.
Mi “número uno”, el primero de todos, es el gas. Suele ser inodoro, insípido y mortal. Basta mantenerse a distancia, si posible. Si no, no estar en el piso del sótano o en el suelo. Deje las ventanas abiertas y que el aire circule a través de la casa. Los ventiladores siempre conectados para que se renueve el aire fresco, de preferencia desde el exterior. Quedarse y dormir en el sitio lo más alto posible, evitando innecesariamente quedarse en las zonas bajas y depresiones del terreno o las grietas causadas por los terremotos. No entrar nunca en viejos túneles o cuevas. No viaje solo, y que los demás sepan de sus planes de viaje.
TERREMOTOS – he experimentado un buen número de esos, y puédese volver peligroso, sobre todo en viejos edificios de ladrillo o piedra. Casas de madera o de concreto bien reforzado con acero son consideradas más seguras. Así que la regla es mantener abiertas las puertas a los compartimentos internos (es decir, desbloqueado), porque es menos probable de emperraren (cerradas) y es aconsejable realizar un ejercicio de cómo y dónde salir de la casa o apartamento, si se convierte en inseguro. Pero, sobre todo, quedarse donde está, no correr. Si ocurre un terremoto (5,0 M), póngase de pie en un rincón, debajo de una mesa, o simplemente se pare debajo de una puerta. Esté
siempre atento a la posibilidad de la caída de objetos. Evite tener
las cosas que pueden caer sobre usted en su cama. Compruebe más tarde si todo está bien en casa. Los riesgos de sismos volcánicos son relativamente bajos, los terremotos tectónicos son los que pueden ser peligrosos.
LAS ERUPCIONES VOLCÁNICAS – por lo general las personas no deben vivir en los volcanes. Pero la mayoría de las islas son antiguos volcanes. Ante la amenaza de inicio de una erupción, la mejor cosa a hacer es salir y ir a otra parte. Si esto no es posible, que estéis preparado.
Hay muchas maneras de prepararse. Piense antes. Haga una lista de lo que necesitas hacer y cuándo. ¿Dónde voy a ir, cuándo y cómo. ¿Es seguro quedarse? Piense en los peligros de quedarse. Estas preguntas no pueden ser contestadas aquí. Favor consultar a los planes de emergencia locales (Internet) o encontrar la manera de proceder antes de que ocurra algo.
Si usted no puede ir a un lugar seguro de antemano, por favor, use mi texto sólo como una guía aproximada. Él no es perfecto y yo no soy experto. Mi experiencia viene de la escucha de emisoras de radio del Estado relativas a diversas emergencias y de cómo los demás reaccionan a ellos. Mi formación y experiencia se compone de varios cursos de primeros auxilios y extinción de incendios, así como la búsqueda aérea de aeronaves perdidas, y el transporte y el cuidado de los heridos graves en accidentes por diversos sitios.
La preparación se puede hacer de varias maneras. Una de ellas es
llevar siempre una maleta preparada con algunos cambios de ropa,
pasaporte, tarjeta de crédito / dinero, agua, medicinas, equipo de
medicinas para el tratamiento de pequeños cortes y contusiones, radio portátil (batería) linterna y pilas, mantener la celular cargado con anticipación teniendo siempre el cargador, unos buenos zapatos o botas, gorro de lana y un buen par de guantes, una bolsa impermeable, mantas o sacos de dormir para todos, paraguas, etc … No sobrecargue el vehículo con muebles pesados, o otras cosas innecesarias. Eso puede esperar. Usted puede llevar a algunos documentos personales o cosas ligeras y pequeñas kits de cosméticos o máquina de afeitar eléctrica.
Básicamente, sólo las cosas para viajen, y talvez sea necesario
establecer el límite de una bolsa para cada persona. Mantenga a las
mascotas en sus jaulas habituales (portátil) de viajar y lleve
alimentos y agua para ellos, y también una pequeña cantidad de “comida instantánea” para el viaje. Me refiero a los alimentos que no requieren cocción. Piense en barras de chocolate, etc. Aperitivos, sándwiches, fruta y comidas ligeras pueden ser preparados antes de salir. Tome fotos y una lista completa de todos los miembros de la familia (incluyendo mascotas) para el caso de separación de la familia (se puede guardar en el smartphone). Deje una nota escrita en sus planes de viaje. Salga de su casa en modo seguro (por lo general dejar una luz encendida cerca de la puerta y el congelador / refrigerador en el modo de funcionamiento normal, o desactivarlo si vacío). Desconecte
todos los otros dispositivos, como televisor (removiendo la conexión de la pared, y por lo tanto reduciendo el riesgo de un rayo). Deje encendida la calefacción, para el caso de cualesquiera heladas que pueden dañar la tubería. Mantenga las ventanas cerradas y las persianas seguras. Si usted conduce su coche, mantener el coche revisado de antemano para que tenga suficiente combustible, agua y aceite del motor. Mantenga todo el tiempo las llaves del coche en el bolsillo. Algunos de los elementos mencionados anteriormente se pueden guardar en el maletero del coche de antemano – el coche puede ser utilizado como un refugio, si la casa se daña o vuelva insegura. No corra, conduzca despacio y ofrece paseos para ayudar a los demás, si todavía haya lugar libre en el coche. y ofrecen un paseo a los demás, si todavía hay algo de espacio a la izquierda en el coche. Un consejo que puedo dar si se usa el coche como refugio es dejar que el motor funcione al ralentí durante unos 15 minutos (la calefacción y la carga de la batería) y luego se apaga por 30 minutos (dependiendo de la temperatura exterior). De este modo, se ahorra una buena cantidad de
valioso combustible.
Aquí, en Islandia, sabemos que podemos confiar en Almannavarnir y Radio de Islandia (RUV) para la alerta de anuncios, que son
notificados por las llamadas directas de la Oficina Meteorológica de Islandia (IMO), la policía o los geólogos de la universidad. Los datos de la IMO sobre sismos volcánicos (incluyendo las advertencias) están disponibles en línea y se puede comprobar en todo momento. El sistema es muy eficaz y se usa regularmente. Es parte de la vida normal aquí.
Si algo sucede, los equipos de rescate están en alerta las 24 horas,
todos los días del año en todas las áreas. Y tienen el equipo
necesario, incluyendo jeeps 4×4, motos de nieve, ambulancias,
helicópteros y botes de rescate y patrullaje costero. Hay planes de
contingencia preparados para una erupción del volcán Katla, que se utilizaron en la erupción del Eyjafjallajökull. También el riesgo de tormentas, tempestades de nieve, aludes, rayos, inundaciones,
terremotos, erupciones volcánicas, incendios, accidentes químicos,
accidentes de aviones de pasajeros grandes, etc. Aquí, están siempre pre-establecidas las bases para los servicios de rescate y atención a las personas afectadas – por lo general en las escuelas o la construcción de género y los servicios de rescate y divulgar
Almannavarnir de FM / RUV “Radio 2” (Ras 2) en qué hacer en cada caso.
Ellos tienen toda la información y las instrucciones (no lo tenemos
todo). Confiamos en ellos. Por lo general, se espera por las instrucciones por radio, que pueden dar pistas importantes sobre lo que está sucediendo. No utilice el teléfono celular y evitar hacer
llamadas innecesarias. Ahorro de energía, si es posible. Mantenersezona segura es la mejor cosa que hacer.
ISLANDER (Translation by Renato Rio)
Updated with 2 videos Islander recommended by Spica
Does this explain it a bit – is this where it comes from? I’m a bit out of my depth here
http://www.google.co.uk/url?sa=t&rct=j&q=microseismic%20soundings%20gorbatikov&source=web&cd=5&ved=0CFsQFjAE&url=http%3A%2F%2Fwww.gradient-geo.com%2Flibrary%2Fstoring.php%3Fdoing%3DT91oVy5lr&ei=HIzvT7S3Hsri8QPekYyjDQ&usg=AFQjCNFbkuQCzcIbZFvLKOVr_Non2I2N4Q&cad=rja
Alyson
Theres thread about thros way up previous page started by Alan talking baout this paper. Also geolrking near bottom of page.
Why cnat we have numbers on threads?
But they do have numbers…. 😀
Alan: June 30, 2012 at 18:19
Peter Cobbold: June 30, 2012 at 21:27
Peter Cobbold: June 30, 2012 at 22:30
GeoLurking: June 30, 2012 at 23:08
GeoLurking: June 30, 2012 at 23:19
These are the shallowest quakes I have found, all in the Mar de las Calmas :
28/06/2012 12:10:34 27.6279 -18.0798 15 1.6 4 SW EL PINAR.IHI
29/06/2012 11:57:23 27.6277 -18.1026 16 1.4 4 SW EL PINAR.IHI
30/06/2012 19:27:54 27.6325 -18.1168 15 1.9 4 SW EL PINAR.IHI
Interestingly, they are almost aligned in the same latitude as Bob, and have longitudes which are aligned along a corridor that contains the shallowest quakes (17-18) occurred further North.
Does it indicate anything?
Click to access abs103.pdf
As explained here –
‘In order to reconstruct the deep structure, we have chosen the method of microseismic
sounding [1, 2], in which surface Rayleigh waves of different frequencies play the role of sounding
signals. The waves determine the main contribution to the vertical component of the Earth’s
microseismic field. The geological structures presenting the velocity inhomogeneities interact with
the incident Rayleigh waves (refraction, exchange, scattering) and distort the amplitude spectrum of
the microseismic field in their vicinity. Spectral amplitudes of specific frequency f decrease at the
Earth’s surface over high velocity anomalies and increase over low velocity anomalies. It was found
experimentally and in the model calculations that frequency f is related to the depth of
inhomogeneity H and velocity of the fundamental mode of the Rayleigh wave VR(f) according to
expression H = 0.4VR(f)/f .’
though I’m non-the-wiser really…
Alyson,
They record minute spontaneous cracking sounds with an array of geophones and compute the images. Its not certain to me what the colours code for in geological terms. I think they just interprete the images looking for ‘structure’.
They are using seimic waves, but in reality they are using them as a radar signal and picking up how they bounce around.
It is very hard to answer something like this since it would require me to write a book.
Try to read up a bit, and then ask me the specifics, and I will try to explain the details in laymans terms.
Interesting comments how sounds of volcanic activity are picked up in the North of Tenerife.
http://www.ipernity.com/blog/170238/352278
HEADS UP!!! 2.9 at 12 km
http://www.ign.es/ign/layoutIn/volcaListadoTerremotos.do?zona=2&cantidad_dias=10
Yes indeed, thanks, VERY interesting, almost like “wider” tremouring started just before midninght on the overall plot. I do woner if “Elvis is in the elevator” as predicted some days ago. http://www.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2012-07-01&ver=s&estacion=CHIE&Anio=2012&Mes=07&Dia=01&tipo=1
12 km is the shallowest one yet I think. Followed by a 2.7 at 15 km. Elvis is having a fun ride on that elevator 😀
Yepp, up and down, up and down,,, but I wonder how much it has progressed (or exactly if it reaches surface later tonight ??) *not expert*
And there goes another similar one at 01:06
Just to get it clear, and I know this might sound has a bit stupid, but I want to be sure, when the signal clips like that (as did with the shallower one), is because is near/strong/what?, or a conjunction of both?
I think it simply saturates the equipment (else I am a bit confused as well as why that is). Perhaps the quake is too long in peaking, or equipment setup is for tetonic ones.. *not expert*
There was a very shallow quake to the north of the SW tip at 00:22, showing on:

but it still does not show in the list. – Just cannot sleep.
CHIE is definitely “dancing” this morning. A large quake at 01:06 but nothing has been posted since 00:20.
http://www.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2012-07-01&ver=s&estacion=CHIE&Anio=2012&Mes=07&Dia=01&tipo=1
Hi Bobbi, did you also see the one at 0:22? Looks like 3 km deep.
I’m not seeing that one, but the one at 1:06 has posted as 3.2 at 23km
Now is posted for me. 2.0 at 1 km. I’m willing to bet that is a mistake.
It has not been removed (yet). If it is correct, it is very very shallow.

Screenshot:
That’s in an unusual place.
Should be 1 km deep, wrong interpretation of the scale – it is late here.
Wrong and out of place, perhaps?
01:05:52 27.6954 -18.1471 23 3.2 mbLg SW FRONTERA.IHI
01:29 27.6653 -18.1431 21 3.0 W El Pinar.
01:18 27.6669 -18.1626 20 2.5 W El Pinar
02:00 27.6761 -18.1392 21 2.5 W El Pinar
Hi guys, just returned from grocery shopping. I see Bob has us on the edge of our seat. The other day someone posted a link to a hotel web cam, mine quite working so I closed it out. Does anyone have that link working?
Sorry I should say Elvis not Bob.
http://web-cams4u.com/webcams/europe/spain/canary-islands/hierro
BBGN 😉
Thanks, and night night Islander, and all who have gone to sleepy land.
BBGN Islander
The one at 2.27 looks like a fair size. Sorry having trouble copy pasting on this apple lap top.
02:26 27.6706 -18.1545 22 3.3 W El Pinar
1 km?
01/07/2012 00:22:20 27.8088 -18.1712 1 2.0 mbLg NW FRONTERA.IHI
People at La Restinga cannot get any sleep due to continuous vibrations. (AVCAN/FB)
Renato, I was just thinking about how horrible it must be to go through this at night.
That’s what they are saying.
Even if you are aware of the fact that (as Islander says in the post) volcanic tremor itself is not dangerous, the fantasy that the ground could open under your feet at any moment, I don’t know…
Like in a thunderstorm, even if you are in a safe place – at least that’s what comes to my mind – I have this fear that something really bad is going to happen. Some connection to our animal survival instinct, don’t know.
I don’t envy those poor people, but as in a storm , we know there will be a next day, and then, you are in paradise…
To true, at night our imaginations can run away with us. The dark is always foreboding.
Try sleeping through the Fire Control Technicians working with a full rack of surface to air missiles in the magazine next compartment over… and knowing that every one of those exhaust nozzles are pointed at your head…
But, it’s not as bad a El Hierro’s constant indigestion.
With the missiles, each and every one had a high capacity fire suppression mechanism aimed right back up the tail of the missile in the event one lit off.
the spike has peaked for now and RQ are between 20 – 23
EQ not RQ, HT is at medium on the other islands, 3.32 med EQ not on list yet and some smaller ones
Is there any reason that Pevolca are not issuing the red alert now .
Good morning Judith, I was wondering if they would issue it. I cannot remember how far along Bob was when they did it the last time.
Good Evening Hattie
I am just gobsmacked at what is going on at the moment and my heart does go out to the islanders .This is so completely different and more powerful than last time I just hope they dont if necessary leave the evacuation of the islanders too late .
They have not issued it because we are not really there yet.
Right now we do not know where the eruption will poke it’s head up, and there has not been enough earthquakes to even give a rough estimate where it will come up.
02:26:10 27.6979 -18.1452 21 2.5 mbLg SW FRONTERA.IHI [+]
02:26:51 27.6706 -18.1545 22 3.3 mbLg W EL PINAR.IHI [+]
03:31:24 27.6689 -18.1414 21 2.8 mbLg W EL PINAR.IHI [+]
Sounds like Nevado del Ruiz had a nice sized eruption this evening. http://www.facebook.com/photo.php?pid=3701868&l=2cfc43e662&id=1497814508
Meanwhile Iceland is going through a bunch of small weird quakes…
Rosemary, at AVCAN posted this link to the location of the 1 km shallow earthwuake:
http://www.facebook.com/l.php?u=http%3A%2F%2Fi50.tinypic.com%2F53ttmx.jpg&h=yAQFPo4NXAQE9iUE4ieaIZvdpHiCBMzVGop0nFnVJpYIE7A
And the last big one (EMSC):
03:52:28.7 25min ago 27.67 N 18.11 W 22 3.1 CANARY ISLANDS, SPAIN REGION
Just did a quick count and there have been 6 quakes of 3 and up since midnight.
Another big one at 04:10 ?
http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2012-07-01&estacion=CHIE&Anio=2012&Mes=07&Dia=01
It was a 2.7 at a depth of 20 W El Pinar
Good evening hattie. I trust you and yours are all well 🙂
I am actually on my own right now, all the boys are away for a few days. It is so quiet.
Good morning everyone. My internet is playing up so I have to re write my first comment of the day!
yes! The quakes appear to be getting larger and also some recent ones are rising above the 20+/- km depth.
I sincerely hope ,looking at the location, if there is an eruption then it will be off shore. Bad for fishing in the short term in the long term the shoal fish will soon move back after the eruption ends and there will be enough nutrients to restart the ecosystem relatively quickly. This I think is preferable to the possible loss of human and livestock life, buildings and agricultural land of a on shore eruption.
Hi Diana, looks like Elvis is taking a small breather for now.
03:52:28 27.6697 -18.1114 22 3.1 mbLg SW EL PINAR.IHI [+]3.52
04:11:22 27.6713 -18.1402 20 2.7 mbLg W EL PINAR.IHI [+]
the 4.11 seems to bigger on the charts
I was also surprised that it was only a 2.7
Well night night all, have a great day or night. BBGN
Ref: Peter Cobbold (July 1, 2012 at 00:11)
Provided I understand what your asking…
15 km panel with 14 to 16 km deep quakes, pre 11 June 2012
30 km panel with quakes deeper than 16 km, pre 11 June 2012
An observation…. the El Golfo quakes in the 15 km panel seem to be partially circling something. But it could just be wishful thinking on my part.
does this one help ? I might have done it before?
Click to access Massonetal01_ESR.pdf
Please could someone explain why on this graph of La Gomera at 02:30 its picked up a quake only a 2.5 at 02.28 El Hierro but other quakes stronger than this have not registered at all.
http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EGOM_2012-07-01&estacion=EGOM&Anio=2012&Mes=07&Dia=01
The graph of La Palma shows the same.
http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EHIG_2012-07-01&ver=s&estacion=EHIG&Anio=2012&Mes=07&Dia=01&tipo=1
That is depending on so many factors really.
Quite often the sound of the earthquake is reflected away by underground structures. Also, it has to do with waveforms. There are many reasons for it really.
But would not the earthquakes of 3.0 or over have stronger wavewarms and therefore be picked up more .
It just seems to stand out this one earthquake when there have been so many not registered.
Even a strong earthquake can have it’s waves deflected by a hard structure functioning like a mirror. My guess is that the earthquakes that you are thinking about happened behind a hardened structure that reflects it away from those SILs.
And a 3M is not a large earthquake, it is either in the upper region of a small quake, or in the lower for a medium quake depending on how you look at it.
Personally I divide quakes in 0 to 2.9M as small, 3 to 5.5 as medium quakes and anything above as a large. This is of course for volcanic earthquakes. Tectonic earthquakes I see as small up to 4.5M, and large quakes start at 7M.
Is not the pressure/energy under La Palma rising aswell or I am completely reading this wrong?
http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EHIG_2012-07-01&ver=s&estacion=EHIG&Anio=2012&Mes=07&Dia=01&tipo=2
I am not sure about it either, La palma, Gomera seems to have hhigher HT then the other islands ? could be just that the whole area is affected by El Hierro
Yes, you are reading it wrong.
That is:
A) activity in El Hierro
B) deep movement on magma towards El Hierro
could the plate have something to do with triggering the activity, there have been a few EQ up and down the boundaries ?
Those are tectonic quakes, and those do not trigger volcanic quakes far away inside a plate. These quakes are triggered by a magmatic upwelling from the hotspot.
thanks
Today FRON shows a little increase in vertical uplift compared to yesterday:
Click to access FRON.pdf
However PINA shows a much larger increase comparatively, almost 1 centimeter:
Click to access PINA.pdf
Another quake at about 8:28 this morning.
A bigi one now…
A new unrest period is starting… http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2012-07-01&ver=s&estacion=CHIE&Anio=2012&Mes=07&Dia=01&tipo=1
This one comes strong …
A new post is up.
Nothing really new, we was just closing in on the comment limit.