Mapping of the Seismic Structures Around Circum-Pacific Subduction Zones

环太平洋俯冲带周围地震结构测绘

• 批准号: 9017715
• 负责人: Hua-Wei Zhou
• 金额: $ 9.5万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017715&HistoricalAwards=false
• 关键词: Mapping; Seismic; Structures; Around; Circum

This research is to tomographically map the 3-D seismic velocities around major subduction zones in the Circum-Pacific with corrected ISC data. A major effort will be made to clean up ISC readings by selective waveform checking, reviewing the signal/noise sate at seismographic stations, and culling incoherent rays from bins of similar source and receiver. This method will be applied to two formally studied regions in the NW Pacific and the South Pacific. New areas to be studied will be: the Java, Solomon and Philippine region; the Mexico, Peru and Chile region; and the Aleutian region. The results will be applied to the fate of deep subducted slabs, an important question in mantle convection.

本项研究是利用层析成像技术， 环太平洋主要俯冲带周围的速度 修正的ISC数据。 将大力清理 ISC读数通过选择性波形检查， 地震台站信号/噪声状态和剔除 来自类似源和接收器的仓的非相干射线。 这 方法将适用于两个正式研究地区的西北 太平洋和南太平洋。 将研究的新领域包括： 爪哇、所罗门和菲律宾地区;墨西哥、秘鲁和 智利地区和阿留申地区。 结果将 应用于深俯冲板片的命运，一个重要的 地幔对流的问题。