Volcano Discovery Tuesday Apr 16, 2013 20:35 PM
Ash emission from Popocatepétl this morning
Today's seismic recording from Nevado del Ruiz (OLL station, INGEOMINAS
Bagana (Bougainville Island, Papua New Guinea): A large SO2 plume was detected from the volcano today, suggesting that elevated activity is occurring.
Manam (Papua New Guinea): Eruptions continue. An ash plume rose to 10,000 ft (3 km) altitude this morning and the Rabaul Volcano Observatory raised the alert level to 3, following a strong increase in seismic activity. The aviation color code is at orange (VAAC Darwin).
Batu Tara (Sunda Islands, Indonesia): An explosion this morning produced an ash plume rising to 7,000 ft (2.1 km) altitude.
Paluweh (off Flores Island, Indonesia): Activity from the lava dome continues, in the form of explosions and rockfalls/pyroclastic flows due to mass loss from the dome. An ash plume was observed this morning rising to 7,000 ft (2.1 km) altitude and drifting 20 nautical miles to the east (VAAC Darwin).
Dukono (Halmahera): Increased SO2 emissions appear on today's NOAA satellite data, suggesting the volcano is in a phase of increased activity.
Popocatépetl (Central Mexico): The volcano remains in a state of elevated activity. Phases of medium to strong tremor occurred this morning at the volcano, although these were not associated by significant changes in the current observed activity: CENAPRED reported near-continuous degassing / steaming, and 35 emissions over the past 24 hours, the strongest of which ejected incandescent fragments out of the crater and produced small ash plumes rising up to 1.5 km height above the crater.
Moderate glow from the growing lava dome remains visible at night.
Nevado del Ruiz (Colombia): An eruption is underway at the volcano. The seismic swarm has continued and is increasing, with quakes as large as magnitude 3.2 this morning. The hypocenters of the seismic swarm, caused by intruding magma, is at 5-9 km depth 6 km NW below the Arenas craters.
INGEOMINAS reports ongoing strong degassing and ash venting. A modest SO2 anomaly is visible on the latest (yesterday's) NOAA satellite data, which confirms fresh magma rising below the volcano.
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