July 27, 2015. English . Nevado Del Ruiz, Io, Popocatepetl .

Home / blog georges Vitton / July 27, 2015. English . Nevado Del Ruiz, Io, Popocatepetl .

July 27, 2015. English . Nevado Del Ruiz, Io, Popocatepetl .

July 27, 2015.


Nevado Del Ruiz, Colombie :

 July 26, 2015.
In the morning, the seismic signal associated with a volcanic tremor under the Nevado del Ruiz volcano has been saved. It was possible to confirm the ash outlet through web cameras located in the volcano area and in the city of Manizales. The height of the column was about 3000 meters.




Image captured by the camera of the Colombian Geological Service through its Volcanological and Seismological Observatory of Manizales. The camera is in the area of Guali , on the Nevado del Ruiz volcano


With the current wind conditions, which is in the direction Northwest Southwest, it is possible that ash falls take place on populations of Chinchiná, Villamaría, Manizales, Pereira and the surrounding areas. It is not excluded that the volcanic ashes scattered in other directions if changes of speed and wind conditions occur. This shows that the volcanic system remains unstable. If you get ash fall, report it to the Volcanological and Seismological Observatory of Manizales.

This emission of ash prompted the authorities to temporarily close two airports in the region. The civil aviation agency stated that it closed the airports of Manizales and Pereira as a precaution at 1330 GMT (21:30 Singapore time) after the eruption. This resulted in the cancellation of at least 16 flights on Sunday.




Since this eruptive episode, it was possible to confirm the ash fall on the villages of Santa Rosa de Cabal, Dosquebradas, Pereira, and other surrounding areas.
Currently, the volcanic tremor signal of the Nevado del Ruiz shows a decrease in number of energy and amplitude. Through web cameras, it is possible to observe a gas and steam column which rises to an elevation of about 300 m above the crater.


Source : SGC, channelnewsasia.com.


Io, Japon :


Japan’s Mount Io shows signs of volcanic activity, ‘small eruption’ warning issued.

Mount Io in Kyushu showed renewed signs of volcanic activity on Sunday, the weather agency said, warning of a possible small eruption.
The Japan Meteorological Agency detected a tremor within the mountain, which is 1,317 meters high and has been quiescent since last August.

The tremor is believed to have been caused by the movement of magma and subterranean water. It lasted for nearly three minutes from 9:23 a.m. and a slight crustal deformation was also observed, the agency said.




Volcanic activity was observed at Mount Io, straddling Kagoshima and Miyazaki prefectures, earlier in the month. There were no signs of magma movements or crustal deformation at the time.
The warning comes amid volcanic activity elsewhere in Japan, including eruptions in June at Mount Asama and Mount Hakone, both close to Tokyo, and in May at Mount Shindake on Kuchinoerabu Island, off the coast of Kyushu.

With the lack of clarification of the Japan Times on the name of the volcanic edifice, I suppose it is the Io-Dake in the Kikai caldera.
The Kikai is a still active volcano. Minor eruptions frequently occur on Mount Io (Io-dake?), One of the post-caldera subaerial volcanic peaks on Io-jima, one of three volcanic islands, two of which are on the edge of the caldera . The most recent eruptions occurred in 2013.

It is in the Kirishima volcanic group on the Ebino Plateau. Mount Io (not to be confused with Mount IO (Shiretoko) located in Hokkaido), this is where the JMA was a slight increase in volcanic activity


Source : Japan Times , GVP . Thank’s to Sherine France.


Popocatepetl , Mexique :

July 26, 11:00 h (July 26, 16:00 GMT)

In the last 24 hours the seismic records of the monitoring system at Popocatepetl volcano registered 102 low-intensity exhalations, the most important of which occurred yesterday at 10:12 , 10:44 , 11:06 , 22:00 , 23:11 , and were folloed by emissions of gas, steam and moderate amounts of ash, reaching heights of up to 1.5 km above the crater.

Additionally 35 minutes of harmonic tremor were recorded.



Since dawn and up to the time of this report a faint but continuous emission of steam and gas, heading northwest, has been noted.Other monitoring parameters remain largely unchanged.CENAPRED emphasizes that people SHOULD NOT go near the volcano, especially near the crater,

Source : Cenapred.
Photo : Karel Del Angel
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