Tag seismic activity

Strong SO2 steam emissions, some ash venting at Nevado del Ruiz volcano in Colombia

Unrest continues at the volcano. Strong steam emissions, sometimes mixed with light ash continue, accompanied by elevated seismic activity inside the volcano.   Manizales observatory reported several episodes of volcanic tremor associated with the movement of fluids and gases and…

Explosive gases and ashes at Volcano Tungurahua in Ecuador

The Geophysics Ecuadorian Institute reported today a high seismic activity in the Tungurahua volcano area.   The volcano has 5 thousand meters of altitude and it was detected constant tremors because of the expulsion of gases and ashes.   The Tungurahua…

USGS upgrades Aleutian volcano alert level to Yellow

Citing increased seismic intensity, the U.S. Geological Survey is upgrading the volcano alert level status for Semisopochnoi, an Aleutian Island volcano, to “advisory,” the agency said in a notice issued Wednesday morning.   Seismic activity at the Semisopochnoi volcano began…

Evacuations ordered due to the increased seismic activity in the North of Iceland

Authorities have evacuated tourists from an area north of Iceland’s largest glacier amid increased seismic activity around a volcano in the past few days. Iceland’s Civil Protection Department says 300-500 people, mostly visitors, have been evacuated from the highlands north…