Volcano Discovery-Sept 10, 2013
Kliuchevskoi (Kamchatka): The effusion of a lava flow on the SW flank and strombolian activity at the summit vent continue. Avalanches are being formed from detaching lava blocks from the flow on the steep flow. KVERT reports moderate seismic activity with strong tremor, that obscure the signal from nearby Bezymianny volcano. A large thermal anomaly can be seen on satellite data.
No significant changes in activity was reported for any of the other currently active volcanoes in Kamchatka (growing lava domes at Shiveluch, Kizimen, Bezymianny, weak tremor and possibly still some lava effusion at Tolbachik, strombolian-vulcanian explosions at Karymski, hydrothermal tremor and degassing at Gorely).
Dukono (Halmahera): An elevated SO2 concentration visible on NOAA satellite data above the volcano suggests increased activity from the remote active volcano.
Lokon-Empung (North Sulawesi, Indonesia): More explosions have occurred today (at least 6 so far, at 06:12, 06:55, 07:45, 08:36, 09:51, 15:59), preceded by increased degassing and often followed by continuous ash venting lasting for up to 1-2 hours. Ash plumes rose to elevations of 1-2 km and the Aviation Color code was raised to orange.
Volcanologist David Pyle who is on location shared the attached picture on twitter and several of the explosions could be seen on the VSI webcam, as the following video shows:
Yasur (Tanna Island, Vanuatu): The volcano continues to produce very rhythmic and often intense strombolian explosions. Sometimes (see the following time-lapse video), bombs are ejected to the outer slope and land in or near the car-park area, where extreme caution should be applied. Geohazard maintains status level 2.
Veniaminof (Alaska Peninsula, USA): The eruption continues at moderate levels, as evidenced by continuous seismic tremor and elevated surface temperatures in satellite views. Effusion and fountaining of lava from the active vent are likely ongoing as is low level ash emissions that are, at this time, restricted to an area within a few miles of the vent. (AVO daily update)
Popocatépetl (Central Mexico): Activity has been going on with little changes. The volcano has had about 1-2 weak emissions of steam, gas and small amounts of ash per hour during the past 24 hours.
A short time-lapse from this morning (CENAPRED webcam) shows this activity:
Santa María / Santiaguito (Guatemala): The lava dome has been relatively calm, with only few and weak explosions and small avalanches from the viscous lava flows descending on the flanks of the Caliente dome.
Pacaya (Guatemala): INSIVUMEH reports continuing strombolian activity with explosions every 10 seconds, accompanied by a continuous volcanic tremor signal. Pyroclastic material is thrown to 100-150 m height.
Fuego (Guatemala): Activity has been mild during the past days, with occasional small strombolian-type explosions that eject incandescent material to about 100 m above the crater.
Heavy rains caused lahars (mud flows) into the valley of Las Lajas and El Jute, and possibly also into the Ceniza canyon. Blocks of up to 1-2 meters in diameter were reported to have been carried along in these flows.
Heard (Australia, Southern Indian Ocean): A strong hot spot remains visible at Dawson Peak on Heard island, suggesting that volcanic activity (perhaps in the form of a small lava lake in the crater) continues. No ash plumes or significant degassing plumes have otherwise been detected on satellite data.
