********************************* From: Michael Ramsey <mramsey+@xxxxxxxx> ********************************* Colleagues: The ASTER satellite instrument continues to be tasked with imaging the ongoing activity at three Kamchatkan volcanoes: Bezymianny, Kluichevskoi, and Sheveluch. Previous ASTER results from Bezymianny were posted to the listserv on 26 Jan 2007) by A. Carter. The new visible and thermal IR data, collected on 4 Feb 2007 have been downloaded and preliminarily processed. A PDF file can be found here: http://ivis.eps.pitt.edu/docs/Bezymianny_04Feb07.pdf The preliminary TIR analysis shows that the Bezymianny PF deposit is still thermally detectable (approximately 10-15 C above the average background). The hottest pixel on the summit lava dome has an absolute temperature of 5.5 C. It is in the same location as the previous report -- now seen as an area of intense fumarolic activity. An interesting new thermal anomaly has also been detected in the crater of Kluichevskoi. There are two thermally-elevated TIR pixels (13C and 18C), which are fairly significant considering the elevation of the Kluichevskoi summit crater (4835 m). This thermal area corresponds to the dark region seen in the VNIR image. A nighttime overpass for Bezymianny is scheduled for 5 February and more information will be reported here. The Alaska Volcano Observatory (AVO, http://www.avo.alaska.edu/), KVERT (http://www.kscnet.ru/ivs/kvert/updates.shtml) and the University of Pittsburgh (UPitt: http://www.geology.pitt.edu/) continue to monitor activity at Bezymianny, Sheveluch, and now Kluichevskoi. For more information on the ASTER sensor and Science Team please visit this website: http://asterweb.jpl.nasa.gov/. Cheers, Mike Ramsey ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
