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首页> 外文期刊>Seismological research letters >The Source-Specific Station Term and Waveform Cross-Correlation Earthquake Location Package and Its Applications to California and New Zealand
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The Source-Specific Station Term and Waveform Cross-Correlation Earthquake Location Package and Its Applications to California and New Zealand

机译：源特定的站术语和波形互相关地震定位包及其在加利福尼亚和新西兰的应用

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摘要

In this article, I present a Fortran package (XCORLOC) that improves relative earthquake location accuracy based on compressional and/or shear-wave seismic data. The program can perform phase arrival (e.g., single event, static station term, and source-specific station term [SSST]) and waveform cross-correlation relocation sequentially or separately. It performs an iterative grid-search approach that allows application of more robust norms (L1 and hybrid L1-L2) than traditional least squares, which are less sensitive to gross timing errors. This package can be used for relocations in local, regional, and global scales. Specific topography information can be included to avoid artificial effects in the presence of significant topographic relief. In addition, the package can be used to compute station corrections in areas with strong velocity contrasts from a suite of well-constrained earthquake locations and then achieve similar location accuracies for a different set of events. As an illustration, I show location improvements of the SSST and the waveform cross-correlation locations relative to the typical seismic network locations for three regions, the Vallecitos Valley region in southern California, Parkfield in central California, and the North Island of New Zealand. Comparison with other location techniques is also provided for a case study. The XCORLOC package is available for free download (see Data and Resources).
机译：在本文中，我介绍了一种基于压缩和/或剪切波地震数据来提高相对地震定位精度的福特兰包装（Xcorloc）。该程序可以顺序或单独执行相位到达（例如，单个事件，静态站项和源特定的站术语[SSST]）和波形交叉相关重新定位。它执行迭代网格搜索方法，其允许应用比传统最小二乘值更强的规范（L1和混合L1-L2），这对毛重定时误差不太敏感。此套餐可用于迁移本地，区域和全球尺度。可以包括特定的地形信息，以避免在显着的地形浮雕存在下的人工效应。另外，该包装可用于计算具有强烈速度较强的地震位置的强速对比的区域中的站校正，然后实现不同一组事件的类似定位精度。作为图示，我展示了SSST和波形互相关位置的位置改进，相对于加利福尼亚州南部的南部加州南部的Vallecitos谷地区的典型地震网络位置，以及加利福尼亚州的南部的Parkfield和新西兰北岛。还提供了与其他位置技术的比较以用于案例研究。 Xcorloc包可用于免费下载（请参阅数据和资源）。

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  • 来源
    《Seismological research letters》 |2018年第5期|共9页
  • 作者

    Lin Guoqing;

  • 作者单位

    Univ Miami Rosenstiel Sch Marine &

    Atmospher Sci Dept Marine Geosci 4600 Rickenbacker Causeway Miami FL 33149 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地震学;
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