Collaborative Research: Dynamics and Kinematics of North America-Juan de Fuca-Pacific Plate Interaction: Constraints from GPS Geodesy and Deophysical Modeling

合作研究：北美-胡安·德富卡-太平洋板块相互作用的动力学和运动学：GPS 大地测量学和物理建模的约束

• 批准号: 9614567
• 负责人: Eugene Humphreys
• 金额: $ 5.76万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-15 至 2000-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614567&HistoricalAwards=false
• 关键词: Collaborative; Research; Dynamics; Kinematics; North

9614567 Humphreys This collaborative project proposes installation of a GPS network in the Pacific Northwest to measure strain accumulation and earthquake hazard in the region that is associated with subduction of the Juan de Fuca plate. Geodetic monitoring, combined with geologic studies and geophysical modeling, should discriminate the relative importance of the many factors contributing to the deformation of this area. The PIs will employ a matrix of permanent and roving GPS receivers in a project that includes 1) site installation, 2) data acquisition, reduction and archiving, and 3) modeling of the kinematic results. This work will be done in collaboration with other agencies and governments (Canadian) operating under the auspices of the Pacific Northwest Geodetic Array (PANGA), of which the PIs are members. A data analysis facility developed at CWU will reduce and distribute on-line and CD ROM geodetic data products to the geophysical community. Finite-element modeling of the new constraints on Pacific Northwest deformation will allow the development of both kinematically consistent, two-dimensional estimates of the surface deformation, and three-dimensional models of the forces that drive that deformation. The integrated approach of field observations and modeling should provide an advancement of understanding of the kinematics and dynamics of the Pacific Northwest, and will provide important seismic monitoring of this seismically active region. ***

9614567 Humphreys这一合作项目提议在太平洋西北部安装全球定位系统网络，以测量该地区与胡安德富卡板块俯冲有关的应变累积和地震危险。大地测量结合地质研究和地球物理模型，应区分导致该地区变形的许多因素的相对重要性。PIS将在一个项目中使用永久和流动GPS接收器矩阵，该项目包括1)现场安装，2)数据采集、简化和存档，以及3)运动学结果建模。这项工作将与太平洋西北大地测量阵列(PANGA)主持下运作的其他机构和政府(加拿大)合作完成，私营部门是该阵列的成员。CWU开发的一个数据分析设施将减少和向地球物理界分发在线和光盘大地测量数据产品。对太平洋西北地区变形的新约束的有限元建模将允许开发出运动学上一致的、对地表变形的二维估计，以及对驱动该变形的力的三维模型。野外观测和模拟的综合方法将促进对太平洋西北地区运动学和动力学的理解，并将为这一地震活跃区提供重要的地震监测。***