1999年4月
Interplate coupling along the Nankai Trough off southwest Japan derived from GPS measurements
GEOPHYSICAL RESEARCH LETTERS
- ,
- ,
- 巻
- 26
- 号
- 7
- 開始ページ
- 927
- 終了ページ
- 930
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1029/1999GL900145
- 出版者・発行元
- AMER GEOPHYSICAL UNION
We investigate interplate coupling between the Philippine Sea and the Eurasian plates at the Nankai Trough off southwest Japan during the interseismic period. Plate coupling is modeled by imaginary backward normal slip superposed on the steady-state subduction. We divide the plate interface into several segments, and estimate coupling on each segment from GPS horizontal velocity data. Estimated coupling is in general agreement with the rate of steady-state subduction predicted from a plate motion model. This implies that current coupling at the Nankai Trough is so strong that much of the relative plate motion is taken up by shortening of the leading edge of the overriding plate. It seems that stronger interseismic coupling is realized on the segment where larger coseismic dislocation occurred, and vice versa. Time fluctuation of plate coupling from 1995 to 1996 is found on a small segment.
- リンク情報
- ID情報
-
- DOI : 10.1029/1999GL900145
- ISSN : 0094-8276
- Web of Science ID : WOS:000079477200030