Gravity anomalies, crustal structure, and seismicity at subduction zones: 1. Seafloor roughness and subducting relief
Gravity anomalies, crustal structure, and seismicity at subduction zones: 1. Seafloor roughness and subducting relief
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DOI：
10.1002/2014gc005684
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发表时间：
2015-05-01
影响因子：
3.5
通讯作者：
Watts, Anthony B.
中科院分区：
文献类型：
--
作者：
Bassett, Dan;Watts, Anthony B.
采用系综平均技术去除俯冲带的长波长地形和重力场。在前弧内解释了残余的水深和重力异常，其中许多异常归因于俯冲板块的构造结构。俯冲断裂带的剩余重力表达式向海沟轴向陆地延伸了约200公里。高度为1 km、面积为500 km(2)的俯冲海山（N=36）和地震脊（N= 10）的水深表达在海沟附近（70 km以内）和浅俯冲板深度（SLAB1.0）以上最大
An ensemble averaging technique is used to remove the long-wavelength topography and gravity field from subduction zones. >200 residual bathymetric and gravimetric anomalies are interpreted within fore arcs, many of which are attributed to the tectonic structure of the subducting plate. The residual-gravimetric expression of subducting fracture zones extends >200 km landward of the trench axis. The bathymetric expression of subducting seamounts with height 1 km and area 500 km(2) (N=36), and aseismic ridges (N>10), is largest near the trench (within 70 km) and above shallow subducting slab depths (SLAB1.0