Array Studies of Central Andean Seismicity and Structure

安第斯山脉中部地震活动和结构的阵列研究

• 批准号: 9118201
• 负责人: Bryan Isacks
• 金额: $ 7.9万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118201&HistoricalAwards=false
• 关键词: Array; Studies; Central; Andean; Seismicity

This research will support analysis of seismic data from two past deployments of the PANDA seismic array along the eastern margin of the central Andes. The goal is to determine 1) the crustal thickening across the eastern margin of the central Andean plateau; 2) the seismic wave velocities within, and the continuity of, the subducted Nazca plate; and 3) the depths of mantle transition zone discontinuities near 400 km and 650 km near the subducted Nazca plate. It is anticipated that this research will provide new constraints on mechanisms of earthquakes and uplift in the central Andean plateau, and on the thermal structure of the subducted plate and adjacent mantle. This research is a component of the National Earthquake Hazard Reduction Program.

这项研究将支持对两个地震数据的分析 PANDA地震台阵沿着东部 安第斯山脉中部的边缘。 目标是确定1） 地壳增厚横跨中部东缘 安第斯高原; 2）地震波速度内， 纳斯卡板块俯冲的连续性; 3） 400 km和650 km附近的地幔过渡带间断 纳斯卡板块附近 预计这一 研究将对生物多样性的机制提供新的限制， 安第斯高原中部的地震和隆起， 俯冲板块和邻近地幔的热结构。 这项研究是国家地震灾害的一个组成部分 减少方案。