globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50939
论文题名:
Along-strike structural changes controlled by dehydration-related fluids within the Philippine Sea plate around the segment boundary of a megathrust earthquake beneath the Kii peninsula, southwest Japan
作者: Kurashimo E.; Iwasaki T.; Iidaka T.; Kato A.; Yamazaki F.; Miyashita K.; Shibutani T.; Ito K.; Takeda T.; Obara K.; Hirata N.
刊名: Geophysical Research Letters
ISSN: 0094-8547
EISSN: 1944-8278
出版年: 2013
卷: 40, 期:18
起始页码: 4839
结束页码: 4844
语种: 英语
英文关键词: active and passive source seismic experiments ; interplate seismogenic zone ; pore fluid pressure ; segment boundary ; seismic reflection image ; tomographic image
Scopus关键词: Pore fluid pressure ; segment boundary ; Seismic reflections ; Seismogenic zones ; Tomographic images ; Experiments ; Image segmentation ; Plates (structural components) ; Tomography ; Earthquakes ; dehydration ; earthquake epicenter ; earthquake rupture ; fluid pressure ; friction ; plate boundary ; pore pressure ; pressure effect ; seismic reflection ; thrust ; tomography ; Honshu ; Japan ; Kii Peninsula ; Kinki ; Pacific Ocean ; Philippine Sea
英文摘要: Active and passive seismic experiments in the Kii Peninsula, southwest Japan, revealed prominent structural features around the segment boundary of a megathrust earthquake associated with the subduction of the Philippine Sea Plate (PHS). A distinct reflection band in the uppermost part of the PHS shows significant lateral variation along its strike. The thicker reflection band, which corresponds to the deeper extension of the fault area of the 1944 Tonankai Earthquake, is interpreted to be a zone of high pore fluid pressure, causing a state of conditionally stable slip on the plate boundary by the reduction in effective normal stress. A thinner reflective band corresponds to the deepest part of the rupture area of the 1946 Nankai earthquake, where plate coupling is stronger due to less effect of fluids. This along-strike structural variation controls the differences in frictional properties and the lateral limit of rupturing along the plate boundary. © 2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884333520&doi=10.1002%2fgrl.50939&partnerID=40&md5=6a93171419a6269984ad0c37384a45e0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5811
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作者单位: Earthquake Research Institute, University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan

Recommended Citation:
Kurashimo E.,Iwasaki T.,Iidaka T.,et al. Along-strike structural changes controlled by dehydration-related fluids within the Philippine Sea plate around the segment boundary of a megathrust earthquake beneath the Kii peninsula, southwest Japan[J]. Geophysical Research Letters,2013-01-01,40(18).
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