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USING GEOID TO MODEL SEAWARD LITHOSPHERIC FLEXURE OF THE RYUKYU TRENCH
Author(s): CHEN Mei, GAO Jinyao, JIN Xianglong, ZHANG Tao
Pages: 55-
59
Year: 2004
Issue:
4
Journal: MARINE GEOLOGY & QUATERNARY GEOLOGY
Keyword: 大地水准面起伏; 挠曲; 有效弹性厚度; 琉球海沟;
Abstract: 利用大地水准面起伏模拟琉球海沟南、中、北段岩石圈的挠曲,经非线性最小二乘拟合,得到琉球海沟洋坡各段岩石圈的有效弹性厚度(Te).模拟结果表明,琉球海沟洋坡的Te中段小,南北段大;南北段相比,南段小,北段大;与其他海沟相比琉球海沟洋坡的Te非常小.不同的Te值表明俯冲板片与岛孤之间不同的耦合程度,为进一步研究西太平洋边缘沟-弧-盆体系的动力学问题提供了新的视角.
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