Collab. Research: Investigation of Heterogeneity Along the San Andreas Fault Zone in Bear Valley, California

这个项目涉及对加利福尼亚北加比兰山脉圣安德烈亚斯断裂带地壳结构的合作调查。调查的一个主要重点将是收集和分析分布在圣安德烈亚斯断层上的帕斯卡尔站的线性和二维阵列的地震数据。具体目标是利用阵列收集的数据，1)通过对主动源和被动源的行程时间和波形的正演模拟以及对不同相位（P、S、转换等）的行程时间的层析成像来解析断裂带结构的细节，2)使用改进的速度结构来重新定位震源，以提高断层深度复杂性的定义，3)通过横波分裂来检查断裂带的各向异性。4)确定捕获模式在断层带内是否有效传播，以及在哪里有效传播。＊＊＊

9316733 Roecker This project involves a collaborative investigation of the structure of the crust along the San Andreas fault zone in the Northern Gabilan Range, California. A principal focus of the investigation will be the collection and analysis of seismic data from linear and 2-D arrays of PASSCAL stations deployed across the San Andreas fault. Specific objectives are to use the data collected by the arrays to 1) resolve details of the fault zone structure through forward modeling of travel times and waveforms and tomographic imaging of travel times of various phases (P,S, converted, etc.) from both active and passive sources, 2) use the improved velocity structures to relocate hypocenters to improve the definition of fault complexity at depth, 3) examine anisotropy in the fault zone through shear wave splitting, and 4) determine if and where trapped modes propagate efficiently within the fault zone. ***