Catalog of earthquakes detected and located offshore central Oregon, USA, in the Cascadia subduction zone using the Cascadia Initiative amphibious data set

This earthquake catalog spans 26 July 2011 through 1 September 2015 and corresponds to the Geology article of Morton et al. (2018; https://doi.org/10.1130/G45354.1). Events were detected using the subspace detection algorithm of Maciera et al. (2010) and located by utilizing direct P and S phase arrival time picks with the hypoinverse location program (Klein et al., 2002). Events that were previously reported in regional earthquake catalogs and the studies of Tréhu et al. (2015; 2018) and Stone et al. (2018) are indicated, as well as the events that were used as templates for subspace scanning. The catalog includes hypocentral locations, origin time, duration magnitudes, number of seismic picks used in location determination, azimuthal gap, event-to-station distance, and location and timing uncertainties. The catalog is separated into three groupings (three ASCII files separated from the one spreadsheet): Earthquakes within a cluster associated with a subducted seamount (150 events), earthquakes within a cluster to the north of the seamount (73 events), and earthquakes not within the clusters (87 events). The data set was generated as part of the project called Developing Methods for Detection and Analysis of Repeating Earthquakes and Low Frequency Earthquakes Using Cascadia Initiative Amphibious Network Data. Funding was provided by NSF grant OCE14-34550, awarded to S.L. Bilek.

本地震目录覆盖了2011年7月26日至2015年9月1日期间的事件，并与Morton等人（2018年；https://doi.org/10.1130/G45354.1）的地质学文章相对应。事件通过Maciera等人（2010年）提出的子空间检测算法进行检测，并利用直接P波和S波到时选取以及双差定位程序（Klein等人，2002年）进行定位。目录中标记了先前在区域地震目录和Tréhu等人（2015年；2018年）及Stone等人（2018年）的研究中报道的事件，以及用作子空间扫描模板的事件。该目录包括震中位置、起源时间、持续时间震级、用于定位的地震波到时选取数量、方位角间隙、事件到台站距离以及定位和定时的不确定性。目录被分为三个组别（与单个电子表格分离的三个ASCII文件）：与潜没海山相关的集群内的地震（150次事件）、海山北部的集群内的地震（73次事件），以及不在集群内的地震（87次事件）。该数据集作为名为“利用Cascadia倡议两栖网络数据开发重复地震和低频地震检测与分析方法”的项目的一部分生成。资金由NSF项目资助OCE14-34550提供，由S.L. Bilek教授获得。