DOI: 10.5281/zenodo.5534461
title: RSQSim Simulated Earthquake Catalog 5091, New Zealand, NSHM2012 Fault System, 276kyr

description: Earthquake simulator for New Zealand Simulated earthquake catalog, generated with the Rate-State Earthquake Simulator (RSQSim), described in and used by the following publication: Bruce E. Shaw, Bill Fry, Andrew Nicol, Andrew Howell, and Matthew Gerstenberger, An Earthquake Simulator for New Zealand, <em>submitted</em>, 2021. A github repository with python tools to interact with this catalog, and other similar rsqsim catalogs, is located at: https://github.com/uc-eqgeo/rsqsim-python-tools This repository is intended to continue to be improved and updated . Additional references discussing the simulator and its uses: 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. <em><em>Bulletin of the Seismological Society of America</em></em> 2021;; 111 (2): 898–915. doi: https://doi.org/10.1785/0120200216 Bruce E. Shaw, Kevin R. Milner, Edward H. Field; Keith B. Richards‐Dinger, Jacquelyn J. Gilchrist, James H. Dieterich, and Thomas H. Jordan, 'A physics-based earthquake simulator replicates seismic hazard statistics across California',<em> Science Advances, 4</em>, 2018. doi:10.1126/sciadv.aau0688 The catalog is simulated on a fault system for New Zealand built from source in the NSHM2021 national hazard model, following the hybrid loading technique described in Shaw (2019) (https://doi.org/10.1785/0120180128). <strong>File Descriptions:</strong> The descriptions below are for some of the more relevant files. There are additional files as well. The python tools in the github repository interact with additional files not mentioned here. <strong>Catalog CSV File:</strong> <em>catalog.csv</em> This is a human-readable summary file listing each event (after<br> skipping the first 50kyrs of model spin-up time).<br> Each line corresponds to an event in the catalog, and contains the<br> following information: * Event ID and occurrence time<br> * Magnitude, Moment, and Area<br> * Participating element information (count, average slip, long-term<br> average slip rate)<br> * Hypocenter and scalar-moment centroid locations<br> * Rupture surface minimum and maximum depths <strong>Geometry File (ASCII): </strong><em>zfault_Deepen.in</em> ASCII file listing patch (triangular) geometry for the simulated faults<br> in a UTM coordinate system (zone 11S). The primary columns are: * /x1, y1, z1/ - UTM coordinates of the first vertex<br> * /x2, y2, z2/ - UTM coordinates of the second vertex<br> * /x3, y3, z3/ - UTM coordinates of the third vertex<br> * /rake/ - Direction of the motion of the hanging wall relative to the<br> footwall (in degrees, following the convention of Aki & Richards, 2002)<br> * /slip_rate/ - Long-term average slip rate (in m/s) The first line in the file (excluding comment lines that start with '#')<br> is the patch with ID=1, the second ID=2, etc. Additional metadata<br> columns may exist in each line beyond those listed and can be ignored. <strong>Catalog List Files (binary):</strong> <em>catalog.eList, catalog.pList,<br> catalog.tList, catalog.dList</em> The raw output of RSQSim includes 4 binary "list" files that define the<br> simulated event IDs, times, and total slip in each participating patch.<br> All 4 list files should be processed together, as the /N/-th item in one<br> 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<br> of these files giving 1) the patch number, 2) the event number, 3) the<br> distance slipped during the event, and 4) the time of first rupture for<br> that patch during that event. The format is as follows: * catalog.eList: list of event IDs (1-based), stored as little-endian<br> 4-byte integers<br> * catalog.pList: list of patch IDs (1-based), stored as little-endian<br> 4-byte integers<br> * catalog.tList: list of time of first slip on each patch in each<br> event (in seconds, relative to simulation origin time), stored as<br> little-endian 8-byte double precision floating-point numbers<br> * catalog.dList: list of total slip on each patch in each event (in<br> meters), stored as little-endian 8-byte double precision<br> floating-point numbers <strong>RSQSim Input File (ASCII):</strong> <em>multiparam.in</em> Key-value pairs of RSQSim model parameters, used to originally run the<br> simulation.