I use template matching and precise relative relocation techniques to develop a high‐resolution earthquake catalog for the initial portion of the 2019 Ridgecrest earthquake sequence, from 4 to 16 July, encompassing the foreshock sequence and the first 10+ days of aftershocks following the Mw 7.1 mainshock. Using 13,525 routinely cataloged events as waveform templates, I detect and precisely locate a total of 34,091 events. Precisely located earthquakes reveal numerous crosscutting fault structures with dominantly perpendicular southwest and northwest strikes. Foreshocks of the Mw 6.4 event appear to align on a northwest‐striking fault. Aftershocks of the Mw 6.4 event suggest that it further ruptured this northwest‐striking fault, as well as the southwest‐striking fault where surface rupture was observed. Finally, aftershocks of the Mw 7.1 show a highly complex distribution, illuminating a primary northwest‐striking fault zone consistent with surface rupture but also numerous crosscutting southwest‐striking faults. Aftershock relocations suggest that the Mw 7.1 event ruptured adjacent to the previous northwest‐striking rupture of the Mw 6.4, perhaps activating a subparallel structure southwest of the earlier rupture. Both the northwest and southeast rupture termini of the Mw 7.1 rupture exhibited multiple fault branching, with particularly high rates of aftershocks and multiple fault orientations in the dilatational quadrant northeast of the northwest rupture terminus.

中文翻译：

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2019年里奇克莱斯特地震序列的高分辨率地震目录：前震，余震和断层复杂性

我使用模板匹配和精确的相对重定位技术为7月4日至16日的2019 Ridgecrest地震序列的初始部分开发了高分辨率地震目录，涵盖了前兆序列和Mw 7.1之后的余震的前10天以上主震。使用13525个常规分类的事件作为波形模板，我检测并精确定位了总共34091个事件。精确定位的地震显示出大量横切断层结构，且西南和西北走向为主。Mw 6.4事件的前兆似乎与西北走向的断裂对齐。Mw 6.4事件的余震表明，它进一步破裂了该西北走向的断裂以及观察到地表破裂的西南走向的断裂。最后是Mw 7的余震。图1显示了一个高度复杂的分布，照亮了一个主要的西北走向断裂带，与地表破裂一致，但也有许多横切的西南走向断裂。余震重新定位表明，Mw 7.1事件在先前的西北Mw 6.4破裂附近破裂，可能激活了较早破裂西南的次平行构造。Mw 7.1断裂的西北和东南断裂端均表现出多个断层分支，在西北断裂端东北的扩张象限中，余震发生率很高，且断裂方向多。1个事件在Mw 6.4的先前西北向破裂附近发生破裂，可能是在较早破裂的西南部激活了一个次平行构造。Mw 7.1断裂的西北和东南断裂端均表现出多个断层分支，在西北断裂端东北的扩张象限中，余震发生率很高，且断裂方向多。1个事件在Mw 6.4的先前西北向破裂附近发生破裂，可能是在较早破裂的西南部激活了一个次平行构造。Mw 7.1断裂的西北和东南断裂端均表现出多个断层分支，在西北断裂端东北的扩张象限中，余震发生率很高，且断裂方向多。