An overview of the role of long-term tectonics and incoming plate structure on segmentation of submarine mass wasting phenomena along the Middle America Trench
An overview of the role of long-term tectonics and incoming plate structure on segmentation of submarine mass wasting phenomena along the Middle America Trench
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长期构造和传入板块结构对中美洲海沟海底质量消耗现象分割的作用概述
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发表时间：
2012
期刊：
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通讯作者：
M. Strasser
中科院分区：
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作者：
Yasuhiro Yamada;K. Kawamura;K. Ikehara;Y. Ogawa;R. Urgeles;D. Mosher;J. Chaytor;M. Strasser
我们研究质量浪费沿着中美洲海沟（MAT），俯冲带占主导地位的构造侵蚀，使用一个全面的数据集的海底浮雕。我们整合了以往长期构造过程的研究，以分析它们如何影响斜坡结构的演变，并为大陆坡的质量浪费做好准备。我们已经使用了分布的147个斜坡破坏结构的库存沿着MAT讨论他们的关系俯冲侵蚀。我们解释说，预处理的斜坡长期构造，相互作用，在短期尺度下逆冲大洋板块的功能，调制的丰度和类型的质量浪费现象。传入的大洋板块的复杂起源产生了板块年龄、地壳厚度、地形和对海沟弯曲变形的响应的突然横向变化，导致其划分为6个部分。我们发现，大陆斜坡的破坏类型和丰度被划分为6个板块，在空间上与海洋板块相匹配
We study mass wasting along the Middle America Trench (MAT), a subduction zone dominated by tectonic erosion, using a comprehensive data set of seafloor relief. We integrate previous studies of long-term tectonic processes to analyze how they influence the evolution of the slope structure and precondition the continental slope for mass wasting. We have used the distribution of an inventory of 147 slope failure structures along the MAT to discuss their relation to subduction erosion. We interpret that preconditioning of the slope by long-term tectonics, interacts in a shorter-term scale with features on the under-thrusting oceanic plate to modulate the abundance and types of mass wasting phenomena. The complex origin of the incoming oceanic plate has produced abrupt lateral changes in plate age, crustal thickness, relief, and response to bending deformation at the trench, leading to its partitioning into 6 segments. We found that the continental-slope failure style and abundance are partitioned into 6 segments that spatially match the ocean plate segments