[S-TT38] Seismic monitoring and processing system

[STT38-P01] Another Manten Project -27 Years of the 10kHz Sampling Observation in the Western Nagano Prefecture-

*Yoshihisa Iio¹ (1.Disater Prevention Research Institute, Kyoto University)

Keywords:Western Nagano Prefecture , high sampling earthqauke observation, Manten project

In the western Nagano prefecture, seismic data have been accumulated for more than 27 years from June 1995 by high-precision seismic observation by 10kHz sampling. The maximum number of observation stations was 57, and they were installed mainly in the eastern part of the aftershock area of the 1984 Western Nagano Prefecture Earthquake. In August 2008, continuous observation by the “Manten” system was also added. 10kHz sampling records 10,000 points per second, which is two orders of magnitude different from normal data, and is another ideal image for seismic observation.