High-resolution image of the North Chilean subduction zone: seismicity, reflectivity and fluids
High-resolution image of the North Chilean subduction zone: seismicity, reflectivity and fluids
复制标题
智利北部俯冲带的高分辨率图像:地震活动、反射率和流体
DOI:
10.1093/gji/ggu084
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发表时间:
2014
影响因子:
2.8
通讯作者:
Shapiro
中科院分区:
文献类型:
--
作者:
BlochW;Kummerow;Salazar;Wigger;Shapiro
We obtained high-precision locations for 5250 earthquakes in the Iquique segment of the northern Chilean subduction zone from two temporary local seismic networks around 21°S. A double seismic zone in the downgoing Nazca slab can be clearly identified. One band of seismicity is located at the plate interface and a second one 20–25 km deeper in the oceanic mantle. It can be traced updip to uncommonly shallow levels of 50 km. A combined interpretation of seismicity and reflectivity along the seismic ANCORP’96 experiment suggests the prevalence of fluid processes in the subducted oceanic crust as well as in the uppermost 20 km of the mantle. Crustal seismicity is pervasive below the Coastal Cordillera. Beneath the Precordillera, the lower bound of crustal seismicity delineates a sharp west-dipping boundary down to 20 km depth, consistent with earlier findings indicating a rheological boundary.
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影响因子:
--
作者:
P. S. Reinoso
通讯作者:
P. S. Reinoso
影响因子:
5.2
作者:
Kelin Wang
通讯作者:
Kelin Wang
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
A. Rietbrock;F. Waldhauser
通讯作者:
F. Waldhauser
影响因子:
3.9
作者:
Lamb, Simon
通讯作者:
Lamb, Simon
影响因子:
2.8
作者:
S. Peyrat;R. Madariaga;E. Buforn;J. Campos;G. Asch;J. Vilotte
通讯作者:
S. Peyrat;R. Madariaga;E. Buforn;J. Campos;G. Asch;J. Vilotte