Relationships among temperature, dehydration of the subducting Philippine Sea plate, and the occurrence of a megathrust earthquake, low-frequency earthquakes, and a slow slip event in the Tokai district, central Japan
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- 作者：Nobuaki Suenagaa ; n.suenaga@people.kobe-u.ac.jp" class="auth_mail" title="E-mail the corresponding author ; Shoichi Yoshiokaa ; b ; Takumi Matsumotoc
- 关键词：2D thermal modeling ; Megathrust earthquake ; Slow slip event (SSE) ; Low-frequency earthquake (LFE) ; Dehydration from hydrous MORB
- 刊名：Physics of the Earth and Planetary Interiors
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：260
- 期：Complete
- 页码：44-52
- 全文大小：2772 K
文摘
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The thermally estimated seismogenic zone occurs at a depth of 8–22 km in the Tokai district.
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Estimated temperatures at the plate boundary where the Tokai SSE occurred were 350–450°C.
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Estimated temperatures at the plate boundary where LFEs occur were 450–500°C.
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Dehydrated water content decreases as hypocenter depths of LFEs increase toward the east.
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Interplate temperature plays a significant role in the occurrence of LFEs in the eastern part of the Tokai district.