The Segmented Overriding Plate and Coupling at the South-Central Chilean Margin (36–42°S)
The Segmented Overriding Plate and Coupling at the South-Central Chilean Margin (36–42°S)
复制标题
智利中南部边缘（36–42°S）的分段覆盖板块和耦合
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
S. Wienecke
中科院分区：
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作者：
R. Hackney;H. Echtler;G. Franz;H. Götze;F. Lucassen;D. Marchenko;D. Melnick;U. Meyer;S. Schmidt;Z. Tašárová;A. Tassara;S. Wienecke
确定俯冲带中易受大地震影响的部分是一项值得高度关注的挑战。在智利中南部，1960年M w 9.5瓦尔迪维亚地震发生的地方，我们将地表地质和重力数据结合到一个三维密度模型中，该模型有助于识别36 ° S和42° S之间弧前属性的海沟平行变化。根据重力资料预测俯冲带孕震行为的观点，我们利用重力资料和地质观测将该地区弧前划分为三段。
Identifying the parts of subduction zones that are susceptible to great earthquakes is a challenge that warrants considerable attention. In south-central Chile, where the 1960 M w 9.5 Valdivia earthquake occurred, we have combined surface geology and gravity data into a three-dimensional density model that helps to identify trench-parallel changes in fore-arc properties between 36 and 42° S. In light of suggestions that gravity data predict the seismogenic behavior of subduction zones, we use the gravity data and geological observations to separate the fore-arc in this region into three segments.