ECUADOR – Seismic activity of the Tungurahua volcano in central Ecuador Andean increased today after the two quakes struck near the volcanoes on Thursday; while the emissions released by the Reventador volcano remains high, as in recent days.
This was reported by the Geophysical Institute (IG) of the National
Polytechnic School, which closely monitors the behavior of the two active
Ecuadorian volcanoes. In the case of Tungurahua, located about 80 kilometers
south of Quito, the IG said in its latest report that the two earthquakes of
3.1 and 2.3 degrees on the Richter scale recorded last night, were due to the
activity of the volcano.
After these tremors, the Institute’s network of
seismographs noticed an increase in activity, due to the pressure and
rupture of rocks within the volcano. In the last 24 hours, the IG has detected
10 long period earthquakes mild, related to internal fluid movement, and has
also noted the decline of black ash and thick debris over Palitahua, a town in
southern colossus.
The report states that last night the two earthquakes were
located in the northwestern flank of the volcano, less than 12 kilometers deep,
caused by the “fluid pressurization and mobilization” inside the mountain.
Because of the cloud cover in the area has been impossible to make observations
of the surface of the crater, the report said. The Tungurahua, 5,016 meters
high, last December saw eruptive pulse generations, characterized by
explosions, and a constant emission of steam and ash. In early January, the
phenomenon briefly subsided, and seismic activity showed an apparent calm. This
behavior is common in Tungurahua, whose eruptive process began in 1999, and has
since interspersed periods of high activity and periods of relative quiet. Regarding
Reventador volcano, located about 90 kilometers east of Quito in an unpopulated
area of the entrance to the Amazon, the IG said today there was high seismic
activity, characterized by a constant tremor signal.
That signal, high energy
and low frequency, is maintained since last Tuesday and would be associated
with the movement of fluids in the volcanic edifice. Although the dense cloud
cover in the area has prevented scientists from making observations of the
crater IG, seismic information warns of incandescent rockfalls from the flanks
of the mountain. Reventador, of 3,485 meters, generating a large explosion in
2002 and launched into the air millions of tons of ash, by wind, they reached
Quito, a city that was stained with a thick coat of that material.The
Tungurahua and Reventador next to Sangay, are among the most active in Ecuador,
which has more than fifty in all its geography, crossed by the so-called
Pacific Ring of Fire.
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