Turrialba and Rincon de la Vieja Volcanoes, with more activity lately-Costa Rica

zim

The Living Force
FOTCM Member
As a part of the Ring of fire Costa Rica have shown recently more activity with two of the volcanoes one in the north of the country and the other in the middle, there were little earthquakes in the same places but not too large.... :zzz:

I wonder it those volcanoes will get worst during the current year as the Ring of fire is more active? :huh:


http://www.wired.com/wiredscience/2012/04/eruption-update-for-april-16-2012-costa-rica-mexico-italy-alaska-and-iceland/

Costa Rica

We’ve talked about rumbling at Rincón de la Vieja earlier this year and it looks like the volcano continues to rumble. Rincón de la Vieja experienced another small phreatic (steam-driven) eruption over the weekend that produced a small plume (impressive nevertheless if you’re up close). Costa Rican authorities have closed entrance to the national park in which the volcano sits. Meanwhile, Turrialba has continues to see elevated activity as well, with a “double plume” (see above) from the summit crater.


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http://www.nacion.com/2012-04-14/Sucesos/Volcanes-activos.aspx




12:00 a.m. 14/04/2012


Los volcanes Turrialba y Rincón de la Vieja están en plena actividad. Esta fotografía del Turrialba la tomó ayer a las 7:30 a. m. el piloto Federico Chavarría Kooper, casi 24 horas después de que una erupción de ceniza causara alerta en el coloso que tiene dos boquetes.






Imagenes/Fotos




+ MULTIMEDIA



Vulcanólogos de la Red Sismológica Nacional advirtieron, por otra parte, el peligro de las erupciones freáticas (agua y sedimentos) en el lago ácido del volcán Rincón de la Vieja en Liberia.

La actividad en ese volcán se incrementó desde hace dos semanas. Uno de los riesgos es que el nivel del agua del lago está muy alto, tiene una temperatura de 38 grados centígrados, además de que se observa azufre.

El vulcanólogo Raúl Mora dijo que no se recomienda el acceso de turistas por ese sector. (Colaboró Gino González, desde Guanacaste).
 
zim said:
I wonder it those volcanoes will get worst during the current year as the Ring of fire is more active?

It took several years, but now the warning is more specific:

https://es.sott.net/article/45966-Costa-Rica-Ceniza-del-Turrialba-podria-seguir-cayendo-en-la-capital-por-anos

A geologist warned the public that the Turrialba volcano could remain active for quite some time, sending ash and a sulfur smell to the capital for years like it did 150 years ago. Back then, the volcano sent ash to San José for 17 consecutive years. Last Thursday's eruption was not predicted either.

Turrialba_volcan_erupcion_LNCI.jpg


This is very close to where I used to live:


Here are some testimonials in Spanish, plus the video of last Thursday's eruption:


From wikipedia:

_https://en.wikipedia.org/wiki/Turrialba_Volcano

The stratovolcano is 3,340 m (10,958 ft) high and is about 45 minutes from the Atlantic slope town of Turrialba. The summit has three craters, the largest of which has a diameter of 50 m (160 ft) [...]

Turrialba is adjacent to Irazú and both are among Costa Rica's largest volcanoes. Turrialba has had at least five large explosive eruptions in last 3500 years. On clear days both the Pacific Ocean and Caribbean Sea can be seen from the summit.

From "Historic activity and hazard analysis of Turrialba volcano, Costa Rica"

_http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0256-70242015000100006

The historic activity of Turrialba volcano was studied based on traveler's reports and newspapers of the 19th century. In 1864-1866, the volcano was in a period of magmatic eruptions which can be subdivided in two stages: pre-eruptive and eruptive. Ash fall reached distances of—115 km covering an area of 3400 km2. By means of GIS, we estimated how a similar magmatic eruption as this, could affect the present population and infrastructure, and we conclude that the ash would fall in the most populated areas of Costa Rica, which is important as a prevention measure and an analysis of future risk decision-making.

Experts are comparing the latest volcanic activity to the one of the 19th century.

Here is a video (Spanish) with testimonials and pictures from the past:


Now we only need to see what the Irazú volcano will do. From that historical record, it can get very interesting:

 
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