O.V. Sobolevskaya, S.L. Senyukov

The Kamchatka branch of geophysical survey of Russian Academy of science,
Petropavlovsk-Kamchatsky,683006, e-mail: sva06@emsd.ru; ssl@emsd.ru

The Kamchatka branch of geophysical survey of RAS (KB GS RAS) is carry out a monitoring of activity of active volcanoes with the purpose of estimation of volcanic danger. One of the sections of observations is the satellite monitoring of thermal anomalies and ash plumes. They are based on a treatment and interpretation of satellite data information of AVHRR sensor of NOAA 16 and 17 satellites. The seismic monitoring is the main parameter for the volcano eruptions precursor as the most informative and authoritative method, because the quality of the seismic data is independent of the weather conditions. The seismic monitoring of the Bezymianny volcano is sometimes impossible or wrong. For the technical reasons or when strong seismic activity at the Klyuchevskoy volcano obscures the seismic data for the Bezymianny. So, the satellite monitoring of the thermal anomalies and research of its parameters are allows us to make a short-dated forecast for the Bezymianny volcano eruptions. The main aim of this article is an investigation of the thermal anomalies temperatures as a short-dated precursor for the Bezymianny volcano eruptions. There were 10 eruptions of the Bezymianny volcano in 2002-2007. The "normal", "higher" and "emergency" levels of anomaly temperatures with an allowance for the seasons of the year were separated. We separated such forecasting anomalies temperature values: "normal level" - is a temperature range, wherein the volcano activity on the ground level; "higher level" - is a temperature range, wherein the volcano prepare for any event (large rock fall, ash plume or eruption); "emergency level" - is temperature range, wherein the eruption will happen in the next 1-4 days. There are some criteria were mark out as a results of our researches. These criteria allow us to know the current status of volcano in presence using satellite data. The got information is compared with seismic, visual and video data, that allows us to trace the process of preparation of volcano to eruption much high-quality. The research results of the thermal anomaly temperatures are using as a secondary parameter to the seismic data for the Bezymianny volcano eruption precursor.