Cohesional Slip on a Plate Subduction Boundary During a Large Earthquake
Cohesional Slip on a Plate Subduction Boundary During a Large Earthquake
复制标题
大地震期间板块俯冲边界上的内聚滑移
DOI:
10.1029/2020gl088395
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发表时间:
2020
影响因子:
5.2
通讯作者:
Hamada Yohei
中科院分区:
文献类型:
--
作者:
Kameda Jun;Hamada Yohei
The frontal part of the Japan Trench plate boundary fault, which slipped during the 2011 Tohoku‐Oki earthquake (Mw9.0), is enriched in smectite and is intrinsically weak owing to the high swelling pressure of this mineral. Our rheometric experiments using analog fault materials demonstrate that “cohesional slip,” rather than frictional slip, is a realistic faulting process in the studied fault zone. The cohesional slip can be described by the Bingham plastic model. Consequently, the coseismic shear stress is described by the yield stress and plastic viscosity. Comparison of the results with the average shear stress derived from a previous study suggests that the slip zone thickness for cohesional slip is ~1.3 cm or less. This finding is consistent with textures characterized by discrete slip planes of comparable thickness observed in the recovered fault rocks, suggesting that these slip planes were activated during the Tohoku‐Oki earthquake.
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DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
R. Keren;I. Shainberg
通讯作者:
I. Shainberg
DOI:
--
发表时间:
2015
期刊:
--
影响因子:
--
作者:
Z. IkeI.
通讯作者:
Z. IkeI.
DOI:
10.1520/stp23552s
发表时间:
1990
期刊:
--
影响因子:
--
作者:
P. Chatterji;N. Morgenstern
通讯作者:
N. Morgenstern
影响因子:
3
作者:
Fujii, Yushiro;Satake, Kenji;Kanazawa, Toshihiko
通讯作者:
Kanazawa, Toshihiko
影响因子:
2.2
作者:
J. Torrance;M. Pirnat
通讯作者:
M. Pirnat