Seismic Observation Networks In Japan — Hi-net, F-net K-NET and KiK-net

摘要

Following the KIBAN project by HERP, NIED constructed several kinds of extensive modern seismic networks covering the whole of Japan, Hi-net, F-net, K-NET and KiK-net. The total number of the seismic stations which are operated by NIED reached nearly 1900 as of 2005. All the high-sensitivity data including the Hi-net and existing seismic networks operated by various institutions are transmitted to and processed by JMA to monitor seismic activity in and around Japan. At the same time, the data are shared to university group for a variety of research works and to NIED for data archive and distribution under the fully open policy. All the data obtained by these networks are now open to any use through the World-Wide Web (http:// www.bosai.go. jp/).