Genesis of Intermediate‐Depth and Deep Intraslab Earthquakes beneath Japan Constrained by Seismic Tomography, Seismicity, and Thermal Modeling
Genesis of Intermediate‐Depth and Deep Intraslab Earthquakes beneath Japan Constrained by Seismic Tomography, Seismicity, and Thermal Modeling
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受地震层析成像、地震活动和热模拟约束的日本地下中深度和深层板内地震的成因
DOI:
10.1029/2018gl080025
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发表时间:
2019
影响因子:
5.2
通讯作者:
Kiser, Eric
中科院分区:
文献类型:
--
作者:
Chen, Min;Manea, Vlad Constantin;Niu, Fenglin;Wei, S. Shawn;Kiser, Eric
The distribution of intermediate‐depth and deep intraslab earthquakes with respect to subducting slabs offers a unique insight into seismogenesis at high pressures and temperatures that should inhibit brittle failure. This study constrains the surface of the subducting Pacific Plate beneath Japan at depths between 100 and 380 km based on a previous continental‐scale adjoint tomography model. Earthquake distributions relative to the slab surface reveal double seismic zones located within the top 60 km of the Pacific Plate. Thermal modeling suggests that the lower‐plane seismicity corresponds to temperatures between 400 and 900 °C. The seismogenic pressure and temperature conditions correlate approximately with the conditions of dehydration reactions of several hydrous minerals, that is, antigorite (serpentine) and chlorite at depths between 100 and 200 km and phase A at greater depths between 200 and 380 km. These correlations indicate that at these depths water released from dehydration processes may facilitate triggering slab mantle earthquakes.
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影响因子:
2.8
作者:
V. Manea;M. Manea;V. Kostoglodov;C. Currie;G. Sewell
通讯作者:
G. Sewell
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
E. Engdahl;J. Dewey;K. Fujita
通讯作者:
K. Fujita
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
G. Bock;B. Schurr;G. Asch
通讯作者:
G. Asch
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
T. Shiina;J. Nakajima;T. Matsuzawa
通讯作者:
T. Matsuzawa
影响因子:
3.9
作者:
Fukao, Yoshio;Obayashi, Masayuki
通讯作者:
Obayashi, Masayuki