RSQSim Simulated Earthquake Catalog 4983, California, UCERF3 Fault System, 715kyr

Simulated earthquake catalog, generated with the Rate-State Earthquake Simulator (RSQSim), described in and used by the following publication: Kevin R. Milner, Bruce E. Shaw, Christine A. Goulet, Keith B. Richards‐Dinger, Scott Callaghan, Thomas H. Jordan, James H. Dieterich, Edward H. Field; Toward Physics‐Based Nonergodic PSHA: A Prototype Fully Deterministic Seismic Hazard Model for Southern California. Bulletin of the Seismological Society of America 2021;; 111 (2): 898–915. doi: https://doi.org/10.1785/0120200216 The catalog is simulated on the UCERF3 fault system for California (https://doi.org/10.1785/0120130164), following the hybrid loading technique described in Shaw (2019) (https://doi.org/10.1785/0120180128). File Descriptions: Catalog CSV Files: catalog.csv, catalog_m6.5.csv These are human-readable summary files listing each event (after skipping the first 65kyrs of model spin-up time). The "catalog_m6.5.csv" file is filtered for only M>6.5 events (those used Milner et al., 2021). Each line corresponds to an event in the catalog, and contains the following information: Event ID and occurrence time Magnitude, Moment, and Area Participating element information (count, average slip, long-term average slip rate) Hypocenter and scalar-moment centroid locations Rupture surface minimum and maximum depths Geometry File (ASCII): geometry.flt ASCII file listing patch (triangular) geometry for the simulated faults in a UTM coordinate system (zone 11S). The primary columns are: x1, y1, z1 - UTM coordinates of the first vertex x2, y2, z2 - UTM coordinates of the second vertex x3, y3, z3 - UTM coordinates of the third vertex rake - Direction of the motion of the hanging wall relative to the footwall (in degrees, following the convention of Aki & Richards, 2002) slip_rate - Long-term average slip rate (in m/s) The first line in the file (excluding comment lines that start with '#') is the patch with ID=1, the second ID=2, etc. Additional metadata columns may exist in each line beyond those listed and can be ignored. Catalog List Files (binary): catalog.eList, catalog.pList, catalog.tList, catalog.dList The raw output of RSQSim includes 4 binary "list" files that define the simulated event IDs, times, and total slip in each participating patch. All 4 list files should be processed together, as the N-th item in one list file corresponds to the N-th item in each other file. For each patch the ruptures during an event, a value is written to each of these files giving 1) the patch number, 2) the event number, 3) the distance slipped during the event, and 4) the time of first rupture for that patch during that event. The format is as follows: catalog.eList: list of event IDs (1-based), stored as little-endian 4-byte integers catalog.pList: list of patch IDs (1-based), stored as little-endian 4-byte integers catalog.tList: list of time of first slip on each patch in each event (in seconds, relative to simulation origin time), stored as little-endian 8-byte double precision floating-point numbers catalog.dList: list of total slip on each patch in each event (in meters), stored as little-endian 8-byte double precision floating-point numbers RSQSim Input File (ASCII): params.in Key-value pairs of RSQSim model parameters, used to originally run the simulation. M>6.5 Rupture Slip-Time Histories (Standard Rupture Format): srfs_m6.5.zip Rupture slip-time histories in the Standard Rupture Format, version 1.0 (see http://equake-rc.info/static/paper/SRF-Description-Graves_2.0.pdf), used in Milner et al. (2021). Slip-time histories are discretized at 0.1s intervals, and represented in the WGS84 coordinate system.本数据集为基于速率-状态地震模拟器（Rate-State Earthquake Simulator, RSQSim）生成的模拟地震目录，相关研究与应用见于以下文献：Kevin R. Milner、Bruce E. Shaw、Christine A. Goulet、Keith B. Richards‐Dinger、Scott Callaghan、Thomas H. Jordan、James H. Dieterich、Edward H. Field 所著《面向基于物理的非遍历概率地震危险性分析（Probabilistic Seismic Hazard Analysis, PSHA）：南加州原型全确定性地震危险性模型》，发表于《地震学会会刊（Bulletin of the Seismological Society of America）》2021年，111卷第2期，页码898–915，DOI：https://doi.org/10.1785/0120200216。 该目录基于加州UCERF3断层系统（https://doi.org/10.1785/0120130164）模拟生成，遵循Shaw(2019)提出的混合加载方法（https://doi.org/10.1785/0120180128）。 ### 目录CSV文件 包含catalog.csv与catalog_m6.5.csv两个人工可读的汇总文件，均已剔除模型预热阶段的前65千年数据，逐条记录模拟地震事件。其中catalog_m6.5.csv仅保留震级M>6.5的事件，即Milner等人2021年研究中采用的事件。每条数据对应一个地震事件，包含以下信息：事件ID与发震时刻、震级、地震矩、参与破裂的断层区域面积、参与单元信息（单元数量、平均滑移量、长期平均滑移速率）、震源位置与标量矩质心位置、破裂面最小与最大深度、几何参数。 ### ASCII几何文件（geometry.flt） 该ASCII文件以通用横轴墨卡托（Universal Transverse Mercator, UTM）坐标系（11S带）记录模拟断层的三角形面片几何构型，主要列信息如下：x1、y1、z1为第一个顶点的UTM坐标；x2、y2、z2为第二个顶点的UTM坐标；x3、y3、z3为第三个顶点的UTM坐标；滑动角（rake）为上盘相对于下盘的运动方向（单位为度，遵循Aki与Richards 2002年的约定）；slip_rate为长期平均滑移速率（单位为m/s）。文件中首行（不含以#开头的注释行）对应面片ID=1，第二行对应ID=2，以此类推。每行可包含上述列之外的额外元数据列，可忽略不计。 ### 二进制目录列表文件 包含catalog.eList、catalog.pList、catalog.tList、catalog.dList四个文件。RSQSim的原始输出包含4个二进制列表文件，用于定义模拟地震事件的ID、发震时刻以及每个参与破裂面片的总滑移量。各列表文件的第N项一一对应。对于单次事件中发生破裂的每个面片，四个文件分别记录以下内容：1）面片编号；2）事件编号；3）该次事件中断层面片的滑移距离；4）该面片在本次事件中首次破裂的时刻。文件格式说明如下： - catalog.eList：事件ID列表（从1开始计数），以小端4字节整数格式存储 - catalog.pList：面片ID列表（从1开始计数），以小端4字节整数格式存储 - catalog.tList：单次事件中每个面片首次滑移的时刻列表（单位为秒，相对于模拟起始时刻），以小端8字节双精度浮点数格式存储 - catalog.dList：单次事件中每个面片的总滑移量列表（单位为米），以小端8字节双精度浮点数格式存储 ### RSQSim输入文件（ASCII格式）：params.in 包含键值对形式的RSQSim模型参数，为原始模拟运行时所采用的配置参数。 ### M>6.5级破裂滑移时程文件（标准破裂格式，Standard Rupture Format, SRF）：srfs_m6.5.zip 该压缩包包含采用1.0版标准破裂格式（详见http://equake-rc.info/static/paper/SRF-Description-Graves_2.0.pdf）的破裂滑移时程数据，为Milner等人2021年研究中所使用的数据。滑移时程以0.1秒为间隔进行离散化，采用世界大地测量系统1984（World Geodetic System 1984, WGS84）坐标系进行表述。