Investigation of Upper Plate Response to Subducting Plate Morphology and Seamounts as Subduction Zone Asperities: Cooperative German, Costa Rican, and United States Project

小行星9402091 这项研究将探讨俯冲洋板块的表面形态对上覆大陆板块的结构和地震活动的影响。 它将利用陆基和海基地震仪，对科科斯板块三个区域的断面进行检查，这三个区域因其不同的形态而被选定：一个是平滑的，一个有许多海山，一个有科科斯海岭。 一个主要目标是检验一个最近的理论，即海山是地震集中的地点（“凸体”）。 我们将使用一个在西半球占主导地位的地区的OBS网格来研究这个问题。 ***

9402091 McIntosh This study will investigate the effect of the surface morphology of a subducting oceanic plate upon the structure and seismicity of the over-riding continental plate. It will use land- and sea-based seismics to examine transects over three regions of the Cocos plate chosen for their different morphology: one smooth, one with numerous seamounts, and one bearing the Cocos Ridge. A primary goal is to test a recent theory that seamounts serve as sites for concentration of earthquakes ("asperities"). A grid of OBS's in the seamount-dominated region will be used to examine this topic. ***