Seguimiento de Volcanes 2011

Estoy decidido a encontrar de una maldita vez imágenes e info a pie de suelo, y ando buscando en los medios locales del Cuerno de África, aunque sea en lengua aramaica u omoro. Por ahora he encontrado esto en uno que está en inglés:


http://www.addisfortune.com/Eritrean%20Volcano%20Erupts%20Economic%20Mayhem%20for%20Ethiopia.htm

Eritrean Volcano Erupts Economic Mayhem for Ethiopia

Nuredin Ahmed, 25, an employee of Ethio Telecom, lives in Logia, Afar Regional State, 610km northeast of Addis Abeba. Saturday midnight, June 12, 2011, brought him a rude awakening when a dormant volcano erupted in the Nabro area, Eritrea. Asleep on his veranda, he awoke to unusual dust and gray ashes in the early hours of Sunday.

“I became confused when my friend who lives in Tiru Town, Afar, 70km from the site of the volcano, told me over the phone that there had been a volcanic eruption,” Nuredin told Fortune.

That Saturday, the volcano’s eruption caused an earthquake in Afambo, Eritrea, which registered 5.4 on the Richter Scale. The area has a line of active volcanoes which are part of the East African Rift Valley system bordering the Afar Region of Ethiopia.

The area of Nabro, located 10km from the Ethio-Eritrean border, has never before recorded any historic volcanic activity, according to Gezahegn Yirgu (Prof), dean of the School of Earth and Planetary Science at Addis Abeba University (AAU).

Although the major eruption took place in Nabro, there were small eruptions in Afambo and Sireru areas as well.

The eruption in Nabro is a strong indication that there is high volcanic activity in the area and people need to be made aware, according to Asfawossen Asrat (PhD), associate professor of the Earth Science Department at AAU.

The type of eruption that took place is an explosive eruption forming a pipeline structure producing different toxic gases, such as sulphur dioxide (SO2), said Gezahegn. It spewed fine volcanic ash 13km up into the atmosphere, above even the clouds.

The samples of the ashes taken from Mekelle established the degree of fragmentation, which is used to measure the energy of the eruption. This showed that the ash particles were tiny, indicating that the eruption was very energetic, according to Gezahegn.

Many residents of the area had not been warned of the possible eruption.

“People in the area were confused and feared that war had broken out between Ethiopia and Eritrea,” Nuredin told Fortune.

“Had the area been located in Ethiopia, we might have informed the people of the possible eruptions but since it is outside the borders of Ethiopia, we had no chance to conduct research,” Gezahegn said. “A British geologist, whom we are working closely with, has flown to the area for an investigation and will report his findings.”

It is possible to assess whether a volcano is close to erupting by observing activities of hot springs beneath the earth, Gezahegn affirmed.

“Had it not been for the remoteness and the security problems in the area, such kinds of eruptions are easy to predict after a little research,” the professor claimed.

Luckily, no harm came to human life, the Eritrean government announced, and the inhabitants have moved to safe areas.  

The Ethiopian government used different media outlets to urge people to protect themselves from the various health problems caused by volcanic ash which was carried on the northwest wind in the direction of Ethiopia.

“People in that area were advised to cover their mouths with handkerchiefs soaked in water, but nobody is following the instructions,” Nuredin claimed.

The well-known Afdera Salt accumulation site in Afar is covered in volcanic ash. The salt from this site is extracted for consumption but now contains sulphuric acid, making the salt inedible.

The ashes cause serious respiratory problems and can decimate plants. The volcanic ash clouds have also caused the cancellation of some domestic and international flights.

Ethiopian Airlines, Emirates, the new Fly Dubai, and Lufthansa Airways have also cancelled their flights to Addis Abeba.

Emirates cancelled three flights from Addis Abeba to Dubai from Monday to Wednesday but flights resumed on Thursday, June 16, 2011, according to Zereaye Yeshiwendem, flight reservation officer at Emirates.

Ethiopian Airlines also cancelled all domestic flights, except to Gambella, and international flights to Djibouti and Khartoum on Thursday, June 16, when an earthquake of 4.0 on the Richter Scale was recorded in Djibouti.

Ethiopian, which has 101 billion dollars in operating revenues and earned 92 million dollars in profits in March 2011 (according to the nine-month report), had flights to Bahir Dar twice a day which were also affected by the cloud formed by the volcanic ash. The airline’s international flights to Djibouti, with an average of 15 flights a week, have also been cancelled.

The airline, which uses the Bombardier Q 4000 NextGen Turboprop plane to fly from Addis to Djibouti with 101 passengers, is estimated to have incurred losses of a little over three million Birr.

The cancellation of flights during the week left passengers stranded at airports. Abeba Shumeye, who came visiting from Sweden with her two little children, was travelling to Dire Dawa to visit her family on Tuesday, June 14, 2011. However, the plane that was to take her there was not able to land at Dire Dawa Airport due to the ashes.

“We circled the airport for about two hours but since the plane could not land, we were forced to return to Addis Abeba,” she told Fortune.  

Neither was she pleased with Ethiopian’s treatment of the passengers.

“The plane being prevented from landing is not the passengers’ problem and therefore the airline should provide us with the necessary accommodation,” Abeba complained to Fortune.

The Emirates booked its passengers with cancelled international flights on Kenya Airways and Ethiopian Airlines the same day, according to the reservation officer.

To Abeba’s dismay, Ethiopian’s response was that they did not provide such accommodations for delays due to natural disasters on domestic flights.

Ethiopian’s officials were not available for comment.

Estoy decidido a encontrar de una maldita vez imágenes e info a pie de suelo, y ando buscando en los medios locales del Cuerno de África, aunque sea en lengua aramaica u omoro. Por ahora he encontrado esto en uno que está en inglés:


http://www.addisfortune.com/Eritrean%20Volcano%20Erupts%20Economic%20Mayhem%20for%20Ethiopia.htm

Citar

Eritrean Volcano Erupts Economic Mayhem for Ethiopia

Yo me he metido en foros árabes de meteo y poco más que animaciones de estas he podido encontrar:

Estabamos comentando en terremotos que se ha producido uno gordo por Chile de Magnitud 6,1/6,6 (según las fuentes) cuando me he dado cuenta de que el epicentro está rodeado de volcanes. El terremoto ha sido muy profundo, a más de 100 km de profundidad. Pero habrá que estar atentos, que el seismo no despierte nada más.

http://hisz.rsoe.hu/alertmap/read/index.php?pageid=seism_read&rid=202060

Pues ojito al San Pedro.. que tiene malas pulgas.. y un 'hermano' mas viejo, el San Pablo.
Al otro cercano, el Cerro del Azufre.. no se le recuerdan erupciones.

El fenómeno este de la liquefacción del suelo también ha pasado en algunas zonas de Japón después del gran terremoto. Incluso en algunos barrios de Tokyo, antiguos arrozales, el agua ha inundado los bajos de algunos edificios. Lo que esxplicais de Christchuch me parece una pasada pensar que un volcán puede salir en la zona (imágen de película de serie B). Me parececría más creíble en alguna zona del centro de la isla Norte, alrededores de Lago Taupo o de Rotorúa con abundantes fenómenos de volcanismo activo. La isla sur la veo poco volcánica..aunque es una apreciación in situ, nada científica.

Actividad en el Mt Batur en Bali.

Estoy decidido a encontrar de una maldita vez imágenes e info a pie de suelo, y ando buscando en los medios locales del Cuerno de África, aunque sea en lengua aramaica u omoro. Por ahora he encontrado esto en uno que está en inglés:


http://www.addisfortune.com/Eritrean%20Volcano%20Erupts%20Economic%20Mayhem%20for%20Ethiopia.htm

Citar

Eritrean Volcano Erupts Economic Mayhem for Ethiopia

Nuredin Ahmed, 25, an employee of Ethio Telecom, lives in Logia, Afar Regional State, 610km northeast of Addis Abeba. Saturday midnight, June 12, 2011, brought him a rude awakening when a dormant volcano erupted in the Nabro area, Eritrea. Asleep on his veranda, he awoke to unusual dust and gray ashes in the early hours of Sunday.

“I became confused when my friend who lives in Tiru Town, Afar, 70km from the site of the volcano, told me over the phone that there had been a volcanic eruption,” Nuredin told Fortune.

That Saturday, the volcano’s eruption caused an earthquake in Afambo, Eritrea, which registered 5.4 on the Richter Scale. The area has a line of active volcanoes which are part of the East African Rift Valley system bordering the Afar Region of Ethiopia.

The area of Nabro, located 10km from the Ethio-Eritrean border, has never before recorded any historic volcanic activity, according to Gezahegn Yirgu (Prof), dean of the School of Earth and Planetary Science at Addis Abeba University (AAU).

Although the major eruption took place in Nabro, there were small eruptions in Afambo and Sireru areas as well.

The eruption in Nabro is a strong indication that there is high volcanic activity in the area and people need to be made aware, according to Asfawossen Asrat (PhD), associate professor of the Earth Science Department at AAU.

The type of eruption that took place is an explosive eruption forming a pipeline structure producing different toxic gases, such as sulphur dioxide (SO2), said Gezahegn. It spewed fine volcanic ash 13km up into the atmosphere, above even the clouds.

The samples of the ashes taken from Mekelle established the degree of fragmentation, which is used to measure the energy of the eruption. This showed that the ash particles were tiny, indicating that the eruption was very energetic, according to Gezahegn.

Many residents of the area had not been warned of the possible eruption.

“People in the area were confused and feared that war had broken out between Ethiopia and Eritrea,” Nuredin told Fortune.

“Had the area been located in Ethiopia, we might have informed the people of the possible eruptions but since it is outside the borders of Ethiopia, we had no chance to conduct research,” Gezahegn said. “A British geologist, whom we are working closely with, has flown to the area for an investigation and will report his findings.”

It is possible to assess whether a volcano is close to erupting by observing activities of hot springs beneath the earth, Gezahegn affirmed.

“Had it not been for the remoteness and the security problems in the area, such kinds of eruptions are easy to predict after a little research,” the professor claimed.

Luckily, no harm came to human life, the Eritrean government announced, and the inhabitants have moved to safe areas.  

The Ethiopian government used different media outlets to urge people to protect themselves from the various health problems caused by volcanic ash which was carried on the northwest wind in the direction of Ethiopia.

“People in that area were advised to cover their mouths with handkerchiefs soaked in water, but nobody is following the instructions,” Nuredin claimed.

The well-known Afdera Salt accumulation site in Afar is covered in volcanic ash. The salt from this site is extracted for consumption but now contains sulphuric acid, making the salt inedible.

The ashes cause serious respiratory problems and can decimate plants. The volcanic ash clouds have also caused the cancellation of some domestic and international flights.

Ethiopian Airlines, Emirates, the new Fly Dubai, and Lufthansa Airways have also cancelled their flights to Addis Abeba.

Emirates cancelled three flights from Addis Abeba to Dubai from Monday to Wednesday but flights resumed on Thursday, June 16, 2011, according to Zereaye Yeshiwendem, flight reservation officer at Emirates.

Ethiopian Airlines also cancelled all domestic flights, except to Gambella, and international flights to Djibouti and Khartoum on Thursday, June 16, when an earthquake of 4.0 on the Richter Scale was recorded in Djibouti.

Ethiopian, which has 101 billion dollars in operating revenues and earned 92 million dollars in profits in March 2011 (according to the nine-month report), had flights to Bahir Dar twice a day which were also affected by the cloud formed by the volcanic ash. The airline’s international flights to Djibouti, with an average of 15 flights a week, have also been cancelled.

The airline, which uses the Bombardier Q 4000 NextGen Turboprop plane to fly from Addis to Djibouti with 101 passengers, is estimated to have incurred losses of a little over three million Birr.

The cancellation of flights during the week left passengers stranded at airports. Abeba Shumeye, who came visiting from Sweden with her two little children, was travelling to Dire Dawa to visit her family on Tuesday, June 14, 2011. However, the plane that was to take her there was not able to land at Dire Dawa Airport due to the ashes.

“We circled the airport for about two hours but since the plane could not land, we were forced to return to Addis Abeba,” she told Fortune.  

Neither was she pleased with Ethiopian’s treatment of the passengers.

“The plane being prevented from landing is not the passengers’ problem and therefore the airline should provide us with the necessary accommodation,” Abeba complained to Fortune.

The Emirates booked its passengers with cancelled international flights on Kenya Airways and Ethiopian Airlines the same day, according to the reservation officer.

To Abeba’s dismay, Ethiopian’s response was that they did not provide such accommodations for delays due to natural disasters on domestic flights.

Ethiopian’s officials were not available for comment.

buena busqueda compañero, al fin algo que se pueda decir mas de primera linea, aun que sigo echando en falta alguna fotografia/video a pie de tierra.

Me he tenido que ir hasta una web de noticias chinas para encontrar una supuesta imagen de la erupción del Nabro desde tierra. En teoría la imagen es del dia 14.



http://translate.google.com/translate?js=n&prev=_t&hl=es&ie=UTF-8&layout=2&eotf=1&sl=auto&tl=es&u=http%3A%2F%2Fwww.chinanews.com%2Fgj%2F2011%2F06-14%2F3108848.shtml

Ok es falsa, lo suponía, gracias Jonan

Imagen del volcán de Enero del 2011:
http://eoimages.gsfc.nasa.gov/images/imagerecords/51000/51074/ISS026-E-023526_lrg.jpg

Es la imagen del volcán chileno

primera foto a pie de tierra de la erupción???


fuente:
http://itongadol.com/noticias/val/56643/cenizas-volcanicas-podrian-llegar-a-eilat.html

FOTO FALSA.

Que quede claro, nadie se ha desplazado por lo que se ha dicho hasta Eritrea para filmar o fotografíar el percal, esa foto es del Puyehue, su tipo de erupción y los árboles a piedefoto lo delatan, no os fiéis de nada que no esté demostrado, y esa foto no lo hace. Algunos medios van de ostentosos o completos e intentan colar fotos que no son. Esa foto me parecía hasta escasa para lo que parece ser la erupción.

Noticia sobre volcanes en Arabia Saudí, el USGS dice que hay que estar atentos a una posible erupción entre las ciudades de Medina y La Meca, mientras que los geólogos saudíes dicen que de aquí a dos años hay que estar tranquilos, pero personalmente confío más en el USGS que en unos geólogos que están bajo la bota de una dictadura, sólo por miedo seguro que dicen que no pasa nada.

P.D. La noticia está traducida con Bing, pido disculpas.

Arabia Saudita: Temores de erupción de volcán disipados.

Jeddah: La encuesta geológica Saudita (SGS) ha descartado la posibilidad de cualquier actividad volcánica o sísmica en el Reino durante los próximos dos años, refutar las predicciones hechas por el  Geological Survey (USGS).

"Cualquier predicción de actividad volcánica o sísmica requiere continua observación de la tierra, así como los cambios que indican su inminente aparición," el SGS dijo en una declaración el domingo.

Profesor Ali Adnan Eshky del Rey Abdulaziz University en Jeddah advirtió de posibles erupciones volcánicas en el Reino durante los próximos dos años, citando el informe USGS. Dijo que un volcán Al-Eis afectaría a Medina, Yanbu y sus alrededores.

La SGS dice es posible predecir una erupción un poco antes de su aparición por seguimiento continuamente todos los fenómenos que acompañan a la actividad volcánica como gases y expansión de grietas causadas por temblores.

"No se basa en cualquier medición científica confirmado lo que se ha dicho sobre posibles erupciones volcánicas en el Reino", dijo que la SGS de la advertencia del USGS. Dijo terremotos en el Reino están vinculados a las actividades sísmicas en la Península Arábiga.

Hablando sobre zonas volcánicas en el Reino, la SGS dijo: "son en forma de montañas de lava formulado hace unos 30 millones de años. La última erupción ocurrió unos 800 años hace, al sureste de Medina".

Según Eshky, hay unos 300 cráteres de volcán entre la Meca y Medina que podría estallar en cualquier momento. Dijo que los residentes de la región deben ser informados sobre cómo responder a una erupción volcánica.

Según un estudio publicado en el diario de Geociencias de la naturaleza , movimiento subterráneo de magma fue el gatillo de un enjambre de sismos menores 30.000 en Arabia Saudita en 2009.

El enjambre se produjo en el campo de lava de Harrat Lunayyir cerca del mar rojo, obligando al Gobierno saudí a evacuar a 40.000 personas de la región para evitar la pérdida de la vida de un posible terremoto más grande o una erupción volcánica.

La actividad sísmica sacudió la región entre abril y junio y alcanzó su pico el 19 de mayo, cuando 19 terremotos con una magnitud mayor a cuatro produjo un error de ruptura 8 km de largo y 18 pulgadas de ancho, dice el estudio.

Los campos de lava en Arabia Saudita se consideran jóvenes a escala geológica, con una notable erupción cerca de Medina en 1256AD; un acontecimiento reciente, teniendo en cuenta la edad de 4.600 millones de año de la tierra. Aunque los seres humanos no han visto actividad volcánica en esta área durante cientos de años, los científicos dicen que no deberíamos sorprendernos.

"La brecha de mar rojo tiene una cadena de volcanes submarinos a lo largo de su eje,", dijo el sismólogo de volcán USGS Wendy McCausland. "Ya que es la profundidad submarina, nos rara vez recuerda de este curso vulcanismo."

Fuente: http://www.sott.net/articles/show/230173-Saudi-Arabia-Volcano-eruption-fears-allayed

Detalle del lago Toba y Samosir.
La erupción del Toba ha sido fechada hace unos 73.000 ± 4.000 años. Se ha estimado un índice de explosividad volcánica de 8, lo que la convierte en el ejemplo más reciente de una erupción supervolcánica, y probablemente en la más poderosa erupción ocurrida en los últimos dos millones de años.
Los especialistas Bill Rose y Craig Chesner, de la Universidad Tecnológica de Míchigan, estimaron la cantidad total de material erupcionado en unos 2.800 km³, de los cuales 2.000 km³ correspondían a ignimbritas que fluyeron sobre la superficie, mientras 800 km³ corresponden a cenizas que cayeron en su mayor parte hacia el Oeste, debido a la dirección de los vientos. Una explosión de este tipo podría haber durado unas dos semanas. La explosión originó el colapso de una gran área, creando una extensa caldera que resultó inundada, formando así el lago propiamente dicho. Posteriormente la base de la caldera emergió formando Samosir, la península situada en el centro del lago, en la actualidad una isla artificial. Este fenómeno de emersión es bastante frecuente en calderas de gran tamaño, aparentemente debido a la presión ascendente del magma no erupcionado. Samosir es probablemente la mayor caldera resurgente de la Tierra.
Muy pocas plantas y animales de Indonesia pudieron sobrevivir a la erupción, la cual podría haber causado una extinción masiva casi completa a escala planetaria. Hay algunas evidencias, basadas en el ADN mitocondrial, de que la raza humana se redujo a unos pocos miles de individuos, debido a la erupción del Toba, como señala la teoría de la catástrofe de Toba.

Tremendas las cifras, tremendo el lago que formo la erupcion del Toba... 100km x 30km  ...

Una nueva animación de la primera explosión del Nabro:

Malas noticias compañeros  

Se aprecian síntomas de envenamiento entre las poblaciones afectadas por el Nabro, el agua está contaminada (ya vimos en el caso de la sal, por dióxido de sulfuro). Hay miles de desplazados y no tienen comida ni medicamentos, piden ayuda inmediata

http://www.bbc.co.uk/news/world-africa-13847054

Eritrea volcano ash hits Ethiopia villagers

Ash spewing from the Dubbi volcano in Eritrea has covered villages in Ethiopia, affecting at least 5,000 people, aid workers say.

Initial reports said eight villages in the Biddu district of Ethiopia, close to the border, were covered by volcanic dust.

Villagers have been left without food and traditional springs and streams have been polluted.

The Afar regional government says the numbers affected could rise sharply.

Save the Children told the BBC the authorities had sent a team to conduct a detailed assessment of the situation.

An initial report by the regional government says the situation in border villages is a serious concern.

"Many community members and especially children are reported sick and in desperate need of medical attention," said Teshome Assefa, of Save the Children.

"Vomiting and retching are common."

The whereabouts of one community living close to the eruption is unknown.

The Dubbi volcano has sent the plumes of ash 13km (eight miles) into the air.

Dos cosas, primera, viendo la animación que colgué en el anterior mensaje no queda duda de que las emisiones llegaron a la estratosfera, solo tenemos que ver las velocidades de traslación de las emanaciones con respecto a las zonas colindantes. Es tremendamente más rápido que las demás.
Segundo, mala burra la noticia que acabas de colgar, y mala burra sobretodo por lo que comentan de la contaminación. hay que ver de donde procede esa contaminación generalizada, si es por via respiratoria o por via digestiva.En la zona no han tenido precipitaciones, por lo que si la contaminación se está produciendo en el subsuelo, y si es bastante generalizada como parece ser según la noticia, me da que el Nabro podría estar empezando a enseñarnos sus cartas. De ser cierta esa contaminación de los acuíferos subterraneos, ojito a la posibilidad de que debajo de ese bicho se esté mkontando una muy gorda....