High Resolution Simultaneous Tomographic Inversion for Attenuation and Velocity Structure at Loma Prieta, Using Local Earthquakes

本次研究是利用地震资料从永久和新 NSF/IRIS PASSCAL仪器用于5000多次余震 与洛马普列塔地震序列，以获得高 分辨率（数百米的数量级）层析成像 沿沿着55 X 45 在圣安德烈亚斯断层附近。 最初，分离 反演将被检查，并与已知的地质 和地球物理观测。 一种联合倒置， 速度，衰减和重力将被开发，需要 结果模型，以反映通过以下方式了解的模型 独立的地球物理观测。 这项研究是一个 国家地震减灾计划的一部分。

This research is to use seismic data from permanent and the new NSF/IRIS PASSCAL instruments for over 5000 aftershocks associated with the Loma Prieta earthquake sequence to derive high resolution (on the order of hundreds of meters) tomographic images of P- and S-wave velocity and attenuation along a 55 X 45 km region near the San Andreas fault. Initially, separate inversions will be examined and correlated with known geologic and geophysical observations. A joint inversion, incorporating velocity, attenuation and gravity will be developed requiring the resulting models to reflect what is known about the model through independent geophysical observations. This research is a component of the National Earthquake Hazard Reduction Program.