2019/07/06 美国Ridgecrest地震初步破裂模型

Preliminary rupture model of the 6th Jul. 2019 Ridgecrest earthquake in America

概述

本次地震发生于2019年7月6日03:19(UTC)，矩震级Mw=7.0，震源时间函数持续时间24秒，最大滑动量4.82米.

反演所需强震数据来自，破裂模型的反演基于迭代反褶积叠加(IDS)方法(Zhang et al., 2014; Zheng et al., 2020)，断层面信息根据USGS的矩张量结果确定，格林函数采用QSSP程序(Wang et al., 2017)计算，所用一维速度结构提取自CRUST1.0模型(Laske et al., 2012).

模型下载：20190706031953_America_Rupture_Info.txt

提供者：北京大学地球物理学系张勇研究组 徐晨雨

波形拟合

参考文献

1. Laske, G., Masters, G, Ma, Z., and Pasyanos, M. (2012). CRUST1.0: An updated global model of Earth’s crust, Geophys. Res. Abs., 14, 3743.

2. Wang, R., Heimann, S., Zhang, Y., Wang, H., and Dahm, T. (2017) Complete synthetic seismograms based on a spherical self-gravitating Earth model with an atmosphere-ocean-mantle-core structure, Geophys. J. Int., 210, 1739-1764.

3. Zhang, Y., Wang, R., Zschau, J., Chen, Y., Parolai, and Dahm, T. (2014). Automatic imaging of earthquake rupture processes by iterative deconvolution and stacking of high-rate GPS and strong motion seismograms, J. Geophys. Res. Solid Earth, 119, 5633-5650.

4. Zheng, X., Zhang, Y., Wang, R., Zhao, L., Li, W., and Huang, Q. (2020). Automatic inversions of strong‐motion records for finite‐fault models of significant earthquakes in and around Japan, J. Geophys. Res. Solid Earth, 125, e2020JB019992.