著者
西村 卓也
出版者
一般社団法人 日本活断層学会
雑誌
活断層研究 (ISSN:09181024)
巻号頁・発行日
vol.2017, no.46, pp.33-39, 2017-03-31 (Released:2018-03-29)
参考文献数
26

Many previous studies have revealed distribution of strain rates in the Japanese Islands using data of continuous GNSS station installed since mid 1990’s. They discovered “strain concentration zones” including the Niigata-Kobe Tectonic Zone and the Ou backbone Range in inland and a side of Sea of Japan away from major plate boundaries including the Nankai Trough and Japan Trench. We used GNSS data after the increase of GNSS stations in 2002 and examined distribution of site velocities and strain rates during 2005-2009 with higher spatial resolution. And then, we compared it with major active faults and found that many active faults locate in regions where maximum shear strain rates were high. We also removed elastic deformation due to interplate coupling on the subducting plate interface along the Nankai Trough and compared between distribution of the corrected strain rates and shallow seismicity. The comparison suggests a tendency that the higher maximum shear strain rates, the more frequent shallow M >_ 6 earthquakes occur. We, therefore, suggest that the GNSS data is incorporated into long-term evaluation of large inland earthquakes.

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外部データベース (DOI)

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<論文> 2017年に発表されていた、西村卓也氏の論文『GNSSデータから見出される日本列島のひずみ集中帯と活断層及び内陸地震』を読んでいます。その中に”有馬ー高槻断層帯” というキーワードが。もう少し、じっくり読んでみます。… https://t.co/URFGbDltWQ
西村卓也「GNSSデータから見出される日本列島のひずみ集中帯と活断層及び内陸地震」(活断層研究2017) https://t.co/wQOd3P9mDf

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