Comparison of GPS and Historical Triangulation Data for Mapping Crustal Strain Across the Great Sumatran Fault System

GPS 与历史三角测量数据比较，用于绘制大苏门答腊断层系统的地壳应变图

• 批准号: 9004376
• 负责人: Yehuda Bock
• 金额: $ 5万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004376&HistoricalAwards=false
• 关键词: Comparison; GPS; Historical; Triangulation; Data

This proposal is to support a graduate student for two years to thoroughly research the Indonesian geodetic archives of the Dutch period in West Java and the archives of the Netherlands Geodetic Commission in Delft, and to perform a strain analysis across the Great Sumatran Fault System using historical triangulation data located in these archives and ongoing GPS measurements. This work will be coordinated with two Indonesian colleagues who will also be using the triangulation and GPS data as part of their doctoral studies. These data will provide important constraints on the decoupling of oblique convergence west of Sumatra into subduction normal to the margin between the Indian-Australian and Eurasian plates and right-lateral faulting parallel to it. Specifically, this comparison will enable us to measure horizontal strain rates both along the Sumatran fault to outline sections of differing fault behavior and far from the "fault, in the southwest to constrain the partitioning os shear" "throughout the forearc, and in the northeast to study the accumulation of elastic strain across the Sumatran Fault system. In addition, these data will provide valuable information on earthquake-and fault-related processes in this very seismically active region. These data are particularly valuable since the Dutch often resurveyed parts of the triangulation network after earthquakes.

这个提案是支持一个研究生两年的 深入研究印度尼西亚的大地测量档案， 西爪哇荷兰时期与荷兰档案馆 德尔夫特的大地测量委员会，并进行应变分析 利用历史数据， 这些档案中的三角测量数据和正在进行的GPS 测量. 这项工作将与两名印度尼西亚人协调。 同事们也将使用三角测量和GPS数据 作为博士研究的一部分。 这些数据将提供 斜收敛解耦的重要约束 苏门答腊以西的俯冲带， 印度-澳大利亚和欧亚板块与右旋断裂 具体来说，这种比较将使我们能够 测量沿着苏门答腊断层的水平应变率， 概述了不同断层行为的部分， “断层，在西南部，以限制分割或剪切” “在整个前弧区，在东北部， 在Summers断层系统上的弹性应变的积累。 此外，这些数据将提供以下方面的宝贵信息： 地震和断层相关的过程， 活动区 这些数据特别有价值，因为 荷兰人经常重新勘测部分三角网， 地震