Volcanic activity worldwide 29 Mar 2014: Reventador, Shishaldin, Fuego, Karymsky
samedi mars 29, 2014 21:00 |
Current seismic signal of Fuego (FG3 station, INSIVUMEH)
Karymsky (Kamchatka): Activity at the volcano seems to have been on comparably high levels, since ash plume reports have become more frequent recently.
Overlaying of thermal and visible images showing the new lava flows on Reventador (image: F. Vásconez , IG)
VAAC Tokyo reported ongoing ash emissions with a plume drifting eastwards at estimated 7,000 ft (2.1 km) altitude.
Shishaldin (United States, Aleutian Islands): The Alaska Volcano Observatory raised the alert level for the volcano to Aviation Color Code ORANGE and Alert Level WATCH: "Elevated surface temperatures were detected in satellite data beginning on March 18 and have persisted to the present time.
Analysis of this data shows that temperatures are consistent with the eruption of lava within the summit crater. The current activity appears to be confined to the deep summit crater and there have been no observations of lava on the flanks of the volcano or surrounding the summit crater.
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Fuego (Guatemala): The volcano's activity has dropped again a bit. During 27-28 March, 34 moderate explosions with ash plumes up to 800 m high were reported by the volcano observatory. Light ash falls occurred in areas to the west and many explosions were accompanied by shock waves.
The recent lava flow, though, seems to be inactive again.
Reventador (Ecuador): The volcano's activity has remained high since the beginning of the current eruptive phase since 25 March. Fresh lava continues to extrude at the summit crater, adding to the dome that had been active since 2011, and producing incandescent avalanches, small pyroclastic flows on its flanks and ash emissions.
Seismic activity has remained at high levels, showing continuous tremor and emissions signals. IGPEN reports that the pyroclastic flows on the E, SE and S flanks have traveled up to 1.5 km from the summit. Additionally, there seems to be at least 2 lava flows that descend the south-eastern and eastern flank of the volcano, with fronts reaching approx. 500 m distance.
vendredi, mars 28, 2014
jeudi, mars 27, 2014
mercredi, mars 26, 2014
mardi, mars 25, 2014
Kilauea (Hawai'i): No major changes in eruption activity on Kilauea over the past week - lava lake at summit remains 45 m (148 ft) below the floor of Halema`uma`u crater. All surface flows on the east rift zone remain slow in progress, but continue to burn tree lines in the closed Kahauale`a reserve. lire toutes
lundi, mars 24, 2014