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| 2010-08-30 | 2010-08-30 | 2010-08-23 | 2010-08-16 | 2010-08-09 | 2010-08-02 | 2010-07-26 | 2010-07-19 |
2010-08-30
Good day!
Weekly Report about the state of the volcanoes of the Kurile Islands
August 30, 01:25 UTC, 12:25 Sakhalin Time (SKT), 2010.
Time (days, hours) is given by Greenwich.
VOLCANOES OF THE NORTHERN KURILE ISLANDS
Nemo Peak (Onekotan Is.), Krenitsyn ( Onekotan Is.), Severgin (Harimkotan Is.), Sinarka (Shiashkotan Is.), Kuntomintar (Shiashkotan Is.), Chirinkotan (Chirinkotan Is.) – GREEN
Ekarma (Ekarma Is.) – YELLOW (Previous color code – GREEN)
On August 10, 2010 members of the expedition to Sarychev Peak volcano observed a vigorous steam plume from Ekarma volcano reaching altitude of 1800 meters ASL. On August 24 the group landed on the Ekarma Island and observed continuous vigorous gas emission from a new vent located on the southern flank, approximately 250 m below the summit. The flanks of the volcano have been blanketed by layer of fine ash with thickness exceeding 5 centimeters in the vicinity of the vent. Two recent lahars were identified on the southern flank of the volcano. Based on these observations we believe that a small eruption of Ekarma may have occurred between early June and late July 2010. Since the activity may still escalate in the near future we change the color code from GREEN to YELLOW.
Ekarma volcano is located Ekarma Island in Northern Kuriles. Its elevation is 1171 m (3842’). The edifice of Ekarma are built by voluminous lava flows, debris avalanches, pyroclastic flows, and lahars. A small extrusive dome crowns the summit of the volcano at present. Most recently the Ekarma Volcano erupted in 1767-1769, 1980. There is no geophysical instrumentation on the Island or in the vicinity. SVERT utilizes satellite data and infrequent reports from ground observers to monitor the activity at the volcano.
VOLCANOES OF THE CENTRAL KURILE ISLANDS
Raikoke (Raikoke Is.), Sarychev Peak (Matua Is.), Rasshua (Rasshua Is.), Ushishir (Yankich Is.), Pallas Peak ( Ketoi Is.), Prevo Peak (Simushur Is.), Zavaritsky (Simushur Is.), Goryashchaya Sopka (Simushir Is.)- GREEN
VOLCANOES OF SOUTHERN KURILE ISLANDS
Chyorny (Chirpoi Is.), Snow (Chirpoi Is.), Kolokol Group (Urup Is.), Kudryavy (Iturup Is.), Menshy Brat: (Iturup Is.), Chirip - Bogdan Khmelnitsky Group (Iturup Is.), Baransky (Iturup Is.), Ivan Grozny (Iturup Is.), Stokap (Iturup Is.), Atsonupuri (Iturup Is.), Berutarube (Iturup Is.), Ruruy (Kunashir Is.), Tyatya (Kunashir Is.), Mendeleev (Kunashir Is.), Golovnin (Kunashir Is.) – GREEN
Analysis of satellite data once daily (TERRA MODIS, NOAA, MTSAT, GEOS -9) is our primary tool for monitoring of all volcanoes of the Kurile Islands.
Visual observations are used for the volcanoes of Kunashir and Iturup Islands.
Surface instrumental observations are absent; there are no seismic networks on any of these Kurile volcanoes and our ability to detect the onset of volcanic unrest is limited
SVERT will issue these notices weekly unless volcanic activity increases. The report is published on SVERT and AVO web sites:
http://www.imgg.ru/rus/labs_vulcan_hazard.php
http://www.avo.alaska.edu/activity/avoreport.php?view=kurile
Volcanoes of the Paramushir ( Ebeko, Chikurachki, Tatarinov Group, Fuss, Karpinsky Group) and Atlasov (Alaid) Islands are monitored by Kamchatka Group KVERT.
If you have any questions or comments, please direct them to:
Alexander Rybin, IMGG FEB RAS, Yuzhno-Sakhalinsk, Director of SVERT
rybin@imgg.ru
(4242)791667
Pavel Izbekov, University of Alaska, Fairbanks and AVO
pavel@gi.alaska.edu
907-474-5269
Christina Neal, U.S. Geological Survey and AVO
tneal@usgs.gov
907-786-7458
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