東京大学地震研究所
防災科学技術研究所
Earthquake Research Institute, the University of Tokyo
National Research Institute for Earth Science and Disaster Prevention
抄録
To better assess the seismic hazards produced by a magnitude 7 or greater (M 7＋) earthquake in the Tokyo metropolitan area, we have launched the Special Project for Earthquake Disaster Mitigation in Tokyo Metropolitan area (2007−2011). This requires establishing a highly dense seismic-array observation network in and around Tokyo to monitor ongoing micro-earthquakes with relatively high precision even if noise levels are generally high. We have started developing the Metropolitan Seismic Observation network (MeSO-net). Deployment of MeSO-net seismic stations is currently underway. The number of observatories at project termination will be 400 with a 2−5km interval in space. In this paper, we summarize how we solved technically difficult and practical problems involved in MeSO-net construction. We start with a review of related work to better understand the technical difficulties involved in deploying stations in metropolitan areas such as Tokyo. Next, we explain our approach to verifying a meaningful design of an observatory and its deployment at local sites. We further describe our decision-making process in practice for implementing station deployment. We hope that establishing the MeSO-net will support a new assessment of the seismic hazards produced by M 7＋ earthquakes in the Tokyo metropolitan area.
雑誌名
地震研究所彙報
巻
84
号
2
ページ
71 - 88
発行年
2009
ISSN
00408972
書誌レコードID
AN00162258
フォーマット
application/pdf
日本十進分類法
051.1
出版者
東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
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首都圏地震観測網（MeSO-net）の展開
IHO84204.pdf
(2.7MB)
