HR: 0800h
AN: NG41A-0146    [Abstracts]
TI: Geysers Characteristics before and after Landslide of June 3-rd, 2007 (Geysers Valley, Kamchatka, Russia)
AU: Droznin, V A
EM: dva@kscnet.ru
AF: Institute of Volcanology and Seismology FEBRAS, Piip-9, P-Kamchatsky, 683006, Russian Federation
AU: * Kiryukhin, A V
EM: avk2@kscnet.ru
AF: Institute of Volcanology and Seismology FEBRAS, Piip-9, P-Kamchatsky, 683006, Russian Federation
AU: Muraviev, J D
EM: murjd@kscnet.ru
AF: Institute of Volcanology and Seismology FEBRAS, Piip-9, P-Kamchatsky, 683006, Russian Federation
AB: Since 1990 cycling characteristics of five geysers (Maly, Bolshoy, Shel, Velican, Troynoy) were contentiously monitoring using automatic telemetric system (V A Drosnin, http://www.ch0103.emsd.iks.ru/ ). The most powerful geyser Velikan erupted steam clouds at 300 m height. 1:20 UTC June 3-rd, 2007 lower basin of the Geysers Valley was in a few minutes buried under 10 mln m3 of mud, debris, and blocks of rocks. Some indications were found, that landslide triggered by steam eruption in the upstream area of Vodopadny creek. As a result of this three famous geysers (Pervenets, Sakharny,Troynoy) located at lower elevations were sealed under 10-30 m thick caprock as well as Vodopadny hot creek, a rock dumb trap Geysernaya river and lifted water into 20 m deep lake, which flooded three famous geysers (Conus, Bolshoy and Maly) terminating their cycling activity. Nevertheless Bolshoy and Maly activity continues in a form of discharge of water circulated in the former geysers channels and a clear plume at a lake surface above exits observed. Shortly after landslide continuous monitoring of the cycling characteristics of the upper basin geysers, including Velikan and lake level, accomplished by temperature loggers – restarted. There are some indications time periods of the geysers cycling decrease.
DE: 8424 Hydrothermal systems (0450, 1034, 3017, 3616, 4832, 8135)
SC: Nonlinear Geophysics [NG]
MN: 2007 Fall Meeting