Volcano Discovery Monday Apr 15, 2013 17:41 PM
Bagana (Bougainville Island, Papua New Guinea): Activity at the volcano continues. A volcanic ash plume was observed at 6,000 ft (1.8 km) altitude and extending 15 nautical miles to the S and W.
White Island (New Zealand): Tremor remains unstable. After a period of low intensity, strong tremor has reappeared today, reflecting internal fluid movements and degassing.
Popocatépetl (Central Mexico): Another, but weaker episode of strong volcanic tremor and near-continuous emissions occurred yesterday at 15:50 (local time), creating a plume of steam, gas and ash rising 900 m and drifting NE. After a few hours, activity decreased again to individual small explosions at a rate of about 1 per hour, such as one captured on the webcam a few minutes ago.
Telica (Nicaragua): The earthquake swarm continues with little changes.
Masaya (Nicaragua): Seismic activity is unstable, with a phase of weak tremor (and a regional earthquake) visible on this morning's seismogram.
Nevado del Ruiz (Colombia): The earthquake swarm with weak volcanic tremor continues, associated with internal fluid movements and steam and ash venting, creating a plume observed rising 630 m above the volcano this morning.
The volcano-tectonic earthquakes , i.e. the likely location of new intruding magma, are located in northwest of Arenas crater, at an average depth of 7 km. The largest recorded quake was a magnitude 2.6 event at 22:43 (local time) last night, felt by officials of the Colombia National Parks in the area of Brisas.
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