HR: 1330h
AN: S42B-0159    [PDF]
TI: Real-time Operation System for Earthquakes (ROSE)
AU: * Ishida, M
EM: ishida@bosai.go.jp
AF: National Research Institute for Earth Science and Disaster Prevention, 3-1 Ten-nodai, Tsukuba, 305-0006 Japan
AU: Ooi, M
EM: ooi@bosai.go.jp
AF: National Research Institute for Earth Science and Disaster Prevention, 3-1 Ten-nodai, Tsukuba, 305-0006 Japan
AU: Fujiwara, H
EM: fujiwara@bosai.go.jp
AF: National Research Institute for Earth Science and Disaster Prevention, 3-1 Ten-nodai, Tsukuba, 305-0006 Japan
AB: Three kinds of nationwide seismic network have been established and operated by the National Research Institute for Earth Science and Disaster Prevention (NIED) after the 1995 Kobe, Japan, earthquake (M7.3): (1) The short period seismic network (Hi-net); (2) The strong motion network (K-NET and KiK-net); And (3) the broad band seismic network (F-net). The Hi-net consists of about 700 short period (1 Hz) borehole seismometers distributed over Japan with average station interval of 20 km. The K-net consists of about 1030 strong motion seismometers; the KiK-net includes about 660 strong motion seismometers installed at the bottom and top of the same borehole as the Hi-net station. And the F-net has about 70 broad band seismometers covering Japan with station interval about 100 km. Furthermore, during the end of 1970' to the beginning of 1980's, NIED had already established about 60 short period borehole stations (KT-net) in the Kanto-Tokai district, central Japan. Real time data from Hi-net, F-net and KT-net are continuously transmitted to the NIED Data Center and event data from K-NET and KiK-net are transmitted to the NIED by a dial-up telephone link. Based on those data we have developed the Real-time Operation System (ROSE) to quickly and accurately determine earthquake parameters including epicentral location, focal depth, magnitude, focal mechanism and moment tensor solution. Furthermore we had developed the real-time ground motion monitoring system, indicating the maximum velocity and intensities in each 30 to 60 sec. The recently developed system (ROSE II) determines, automatically, not only the above parameters but also the fault plane solutions and the geographical distribution of strong ground motion for an earthquake. The strong ground motion map can be automatically revised with the increasing of the number and the accuracy of earthquake information available after a large earthquake begins. Using the ground motion map, the ROSE II will be able to estimate the possible damage of the structures and buildings and display all information together in the same map by using GIS. The earthquake parameters and maps are notified through the home page of NIED as soon as they are determined for timely assessment of overall impact of the disaster and to allocate available resources.
UR: http://www.agu.org
DE: 0910 Data processing
DE: 0935 Seismic methods (3025)
DE: 1734 Seismology
DE: 7212 Earthquake ground motions and engineering
DE: 7223 Seismic hazard assessment and prediction
SC: Seismology [S]
MN: 2003 Fall Meeting