globalchange  > 科学计划与规划
DOI: 10.1002/2014GL062735
论文题名:
Slow stick slip of antigorite serpentinite under hydrothermal conditions as a possible mechanism for slow earthquakes
作者: Okazaki K.; Katayama I.
刊名: Geophysical Research Letters
ISSN: 0094-8958
EISSN: 1944-8689
出版年: 2015
卷: 42, 期:4
起始页码: 1099
结束页码: 1104
语种: 英语
英文关键词: antigorite serpentine ; slow earthquake ; stick slip ; subduction zone
Scopus关键词: Dehydration ; Earthquakes ; Kaolinite ; Scaling laws ; Serpentine ; Silicate minerals ; Stick-slip ; Antigorite ; Dehydration temperature ; Generating mechanism ; Hydrothermal conditions ; Plate interfaces ; Possible mechanisms ; Subduction zones ; Temperature range ; Slip forming ; antigorite ; dehydration ; earthquake mechanism ; friction ; hydrothermal system ; mantle ; shear zone ; stick-slip ; subduction ; temperature gradient ; Cascadia Subduction Zone ; Japan ; Pacific Ocean
英文摘要: Slow earthquakes, characterized by a different scaling law to regular earthquakes, have been detected at the hydrated plate interface in the subduction zones, but the generating mechanism of them remains almost unexplored. Frictional experiments on antigorite serpentinite under hydrothermal conditions are conducted to assess the distinct scaling law of slow earthquakes. Slow stick-slip was observed at temperatures that were close to the dehydration temperature of antigorite, which is resulted by the localized dehydration of serpentine in the shear zone. The occurrence of slow stick-slip is consistent with the temperature range found in the corner of the mantle wedge in SW Japan and Cascadia, where slow earthquakes occur. The laboratory slow stick-slip shows a similar scaling law of slow earthquakes, but distinct from that of regular earthquakes. We propose that the shear-induced dehydration of the serpentine play an important role for the generation of slow earthquakes. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924910357&doi=10.1002%2f2014GL062735&partnerID=40&md5=fde6094ebaafb58ae49be4a589e9a699
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8574
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Geological Sciences, Brown University, Providence, RI, United States

Recommended Citation:
Okazaki K.,Katayama I.. Slow stick slip of antigorite serpentinite under hydrothermal conditions as a possible mechanism for slow earthquakes[J]. Geophysical Research Letters,2015-01-01,42(4).
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