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78 results for “Earthquake catalog”
Earthquake Catalogs of the LArge-n Seismic Survey in Oklahoma dataset
<p>This dataset release contains earthquake catalogs created using different association methods for the LArge-n Seismic Survey in Oklahoma dataset. These datasets can be used by researchers to further analyze the earthquakes in the array to better understand their behavior. The association methods applied here are as follows the Guassian Mixture Model Association (GaMMA) (Zhu et al., 2022), PhaseLink (Ross et al., 2019), the Graph Earthquake Neural Interpretation Engine (GENIE) (McBrearty and Beroza, 2023) and Rapid Earthquake Association and Location (REAL) code (Zhang et al., 2019). For detailed information please see the paper that accompanies this dataset (Pennington et al. 2024). Important notes though, the GaMMA dataset has a large number of false events so it should be used with caution. The PhaseLink dataset does not associate S-phase arrivals so the catalog will only include P-wave arrivals. We also include in this dataset the original detected phase arrivals that each of these catalogs were created from to allow any user to test and apply new methods to and later compare to our results.</p>
Southern Alps, New Zealand microseismicity earthquake catalog
<p>Earthquake catalog of the microseismicity in the central Alpine Fault, New Zealand (2008 - 2017) in QuakeML format. The information included for each event contains location, phase pick, local magnitude information. For more details refer to the Gcubed publication in the related <a href="http://doi.org/10.1029/2018GC007743">link</a>.</p> <p> </p>
Earthquake catalog in QuakeML format from: "Spatio-Temporal Evolution of Intermediate-Depth Seismicity Beneath the Himalayas: Implications for Metamorphism and Tectonics"
<p>Earthquake catalog of the intermediate-depth seismicity beneath the central Himalayas in QuakeML format. The information included for each event contains location, phase pick, local magnitude information. For more details refer to the Frontiers publication:<a href="https://doi.org/10.3389/feart.2021.742700"> Michailos et al., 2021</a></p>
RSQSim Simulated Earthquake Catalog 5091, New Zealand, NSHM2012 Fault System, 276kyr
<p>Earthquake simulator for New Zealand</p> <p>Simulated earthquake catalog, generated with the Rate-State Earthquake Simulator (RSQSim), described in and used by the following publication:</p> <p>Bruce E. Shaw, Bill Fry, Andrew Nicol, Andrew Howell, and Matthew Gerstenberger, An Earthquake Simulator for New Zealand, <em>submitted</em>, 2021.</p> <p>A github repository with python tools to interact with this catalog, and other similar rsqsim catalogs, is located at:</p> <p><a href="https://github.com/uc-eqgeo/rsqsim-python-tools">https://github.com/uc-eqgeo/rsqsim-python-tools</a></p> <p>This repository is intended to continue to be improved and updated .</p> <p> </p> <p>Additional references discussing the simulator and its uses:</p> <p>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: <a href="https://doi.org/10.1785/0120200216">https://doi.org/10.1785/0120200216</a></p> <p>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. <a href="https://www.ldeo.columbia.edu/%7Eshaw/publications/ShawEtal18.pdf">doi:10.1126/sciadv.aau0688</a></p> <p>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) (<a href="https://doi.org/10.1785/0120180128">https://doi.org/10.1785/0120180128</a>).</p> <p> </p> <p><strong>File Descriptions:</strong></p> <p>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. </p> <p><strong>Catalog CSV File:</strong> <em>catalog.csv</em></p> <p>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:</p> <p> * 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</p> <p><strong>Geometry File (ASCII): </strong><em>zfault_Deepen.in</em></p> <p>ASCII file listing patch (triangular) geometry for the simulated faults<br> in a UTM coordinate system (zone 11S). The primary columns are:</p> <p> * /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)</p> <p>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.</p> <p><strong>Catalog List Files (binary):</strong> <em>catalog.eList, catalog.pList,<br> catalog.tList, catalog.dList</em></p> <p>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.</p> <p>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.</p> <p>The format is as follows:</p> <p> * 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</p> <p><strong>RSQSim Input File (ASCII):</strong> <em>multiparam.in</em></p> <p>Key-value pairs of RSQSim model parameters, used to originally run the<br> simulation.</p> <p> </p> <p> </p> <p> </p> <p> </p>
Relocated earthquake catalog using DiTing
<p>Relocated earthquake catalog from 2021/08/01 to 2022/09/20 using the DiTingPicker method</p>
Earthquake catalogs for: A specific earthquake processing workflow for studying long-lived explosive volcanic eruptions with application to the 2008 Okmok eruption
<p>Repository for the seismic catalogs from Garza-Giron et al. (2023a,b). These include the catalog with absolute locations using NonLinLoc (Lomax et al., 2001; Lomax and Curtis, 2001), and the relocated catalogs using hypoDD (Waldhauser and Ellsworth, 2000) and GrowClust (Trugman and Shearer, 2017).</p> <p>The header of the CSV files is as follows:</p> <p><strong>Date</strong> (year/month/day), <strong>Time</strong> (hr:min:sec:msec), <strong>Latitude</strong> (decimal degrees), <strong>Longitude</strong> (decimal degrees), <strong>Depth</strong> (km), <strong>Magnitude</strong> (Ml calculated for this study), <strong>Event_type</strong> (VT:vulcano-tectonic;LP:long-period), <strong>Number of stations</strong> where the event was detected, <strong>ID</strong></p> <p>References:</p> <div>Garza‐Giron, R., Brodsky, E. E., Spica, Z. J., Haney, M. M., & Webley, P. W. (2023a). A specific earthquake processing workflow for studying long‐lived, explosive volcanic eruptions with application to the 2008 Okmok Volcano, Alaska, eruption. <em>Journal of Geophysical Research: Solid Earth</em>, e2022JB025882.</div> <div> </div> <div> <div>Garza‐Girón, R., Brodsky, E. E., Spica, Z. J., Haney, M. M., & Webley, P. W. (2023b). Earthquakes record cycles of opening and closing in the enhanced seismic catalog of the 2008 Okmok Volcano, Alaska, eruption. <em>Journal of Geophysical Research: Solid Earth</em>, <em>128</em>(7), e2023JB026893.</div> <div> </div> </div> <p>Lomax A, Curtis A (2001) Fast, probabilistic earthquake location in 3-D models using oct-tree importance sampling. Geophys Res Abstracts, 3:955.</p> <p>Lomax, A., Zollo, A., Capuano, P., and Virieux, J. (2001). Precise, absolute earthquake location under Somma‐Vesuvius volcano using a new 3D velocity model.Geophysical Journal International,146, 313–331.</p> <p>Trugman, D. T., and Shearer, P. M. (2017). GrowClust: A hierarchical clustering algorithm for relative earthquake relocation, with application to the Spanish Springs and Sheldon, Nevada, earthquake sequences. Seismological Research Letters, 88(2A), 379-391.</p> <p>Waldhauser, F., and Ellsworth, W. L. (2000). A double-difference earthquake location algorithm: Method and application to the northern Hayward fault, California. Bulletin of the Seismological Society of America, 90(6), 1353-1368.</p>
Trinidad Zone 2008-2022 Template-Detected Earthquake Catalog & 2011-2012 Aftershock Array Catalog
<p>This dataset contains two earthquake catalogs for the Trinidad zone in the Raton Basin on the Colorado-New Mexico, USA border. The excel spreadsheet has three tabs and each has a descriptor. The "aftershock_catalog" tab is an earthquake catalog following the 2011 Mw 5.3 mainshock earthquake in the Trinidad zone. It spans from August 2011 to May 2012. The "template" tab contains the earthquakes used as templates for the template-detection earthquake catalog. The "template_detected_catalog" is an earthquake catalog spanning May 30, 2008 to April 1, 2022 built using Transportable Array seismometer T25A.</p>
ValEqt: A high-resolution Earthquake and Repeating earthquakes catalog of the 2017 Valparaiso sequence
<p><strong>The ValEqt earthquake catalog</strong></p> <p>Description:</p> <p>Catalog of earthquakes detected near the 2017 Mw=6.9 Valparaiso (Chile) earthquake from 01/01/2016 to 01/01/2021. We also include a catalog of ValEqt's repeating earthquakes.</p> <p>Methods used to build this dataset are extensively described in this paper : <em>Upcomming paper Doi</em></p> <p>Files:</p> <ol> <li><em>ValEqt.txt </em>: Earthquake catalog</li> <li><em>Repeater.txt</em> : Repeating earthquake catalog</li> </ol> <p> </p>
Global long period earthquake catalog
<p>This file contains information about long period earthquakes recorded in between 2010 and end of 2022</p>
A Deep Learning-Based Low-Frequency Earthquake Catalog in Southern Vancouver Island
<p>A deep learning-based LFE catalog in southern Vancouver Island. Refer to the paper "<strong>Detection of Hidden Low-Frequency Earthquakes in Southern Vancouver Island with Deep Learning</strong>" by J.-T. Lin, A. M. Thomas, L. Bachelot, D. R. Toomey, J. Searcy, D. Melgar for details. The columns in the data are as follows: starttime: start of the detection window; OT: event origin time; lon: longitude; lat: latitude; depth: source depth in km; residual: averaged travel time residual; dt: shifted time from starttime to OT; N: number of stations used. </p>
Earthquake catalogs southern Kansas
<p>Relocated earthquake catalog (Data Set S1) and original non-relocated enhanced catalog (Data Set S2) for southern Kansas.</p>
Potency Magnitude Catalog for Western US Earthquakes: 1950-2024
<p>Earthquake catalog for the western US, derived from the US Geological Survey's Comprehensive Catalog (<a href="https://earthquake.usgs.gov/earthquakes/search/" target="_blank" rel="noopener">https://earthquake.usgs.gov/earthquakes/search/</a>) and supplemented with estimates of seismic potency and potency magnitude. The dataset is space-delimited with the following columns, listed on the header line:</p> <ul> <li>evid: ComCat event id</li> <li>time: ComCat preferred origin time (UTC)</li> <li>lat: ComCat preferred latitude</li> <li>lon: ComCat preferred longitude</li> <li>dep: ComCat preferred event depth</li> <li>mag: ComCat preferred magnitude</li> <li>mag_typ: ComCat preferred magnitude type</li> <li>logP0: Estimate of seismic potency in units of cm*km^2 (log10)</li> <li>Mp: Potency magnitude, equivalent to moment magnitude (Mw) assuming a shear modulus of 36 GPa in calculated moment</li> <li>main: Clustering designation (1 or 0) indicating whether or not the event is the mainshock within a cluster of events. Clustering is defined via the nearest-neighbor diagram method of Zaliapin and Ben-Zion (2013).</li> </ul> <p>If you use this dataset in your research, please cite: </p> <div> <div>Trugman, D. T., & Ben‐Zion, Y. (2024). Potency–Magnitude Scaling Relations and a Unified Earthquake Catalog for the Western United States. <em>The Seismic Record</em>, <em>4</em>(3), 223–230. <a href="https://doi.org/10.1785/0320240022">https://doi.org/10.1785/0320240022</a></div> </div>
Sichuan GNSS data and earthquake catalog
<p>The GNSS data is provided by GNSS data product service platform of China Earthquake Administration. </p>
Earthquake relocated catalog - Western Corinth Gulf - 2020-12-20 2021-02-28
<p>Relocated catalog in growclust format (Trugman & Shearer, 2017). The content of this material is described in Zahradník et al. 2022.</p> <p> </p> <p>References :</p> <p>Trugman, D. T., & Shearer, P. M. (2017). GrowClust: A hierarchical clustering algorithm for relative earthquake relocation, with application to the Spanish Springs and Sheldon, Nevada, earthquake sequences. <em>Seismological Research Letters</em>, <em>88</em>(2A), 379-391.</p>
An improved earthquake catalog during the 2018 Kilauea eruption from combined onshore and offshore seismic arrays
<p>The Island of Hawai'i was formed by repeated eruptions of basalts at an oceanic hotspot. Kilauea, the youngest among the subaerial volcanoes of the island, erupted intensely in 2018. The eruption provided an opportunity to look into the mechanisms that operate at the volcano and associated earthquake activities, as it was recorded simultaneously, for the first time, by onshore and offshore seismometers. We used most of the publicly available seismic data during the eruption period, including temporary arrays, to build a more complete earthquake catalog during the eruption than that provided by the Hawaiian Volcano Observatory (HVO). We used a short-time-average/long-time-average (STA/LTA) method to identify potential earthquakes. The detections were associated into events and automatically picked with P- and S-wave arrivals, which were used to locate the events in a three-dimensional velocity model. After re-examining these earthquake events, their coda/duration magnitudes were determined. The resulting half-year catalog contains 375,736 events with one of the highest daily earthquake numbers ever reported (6,128 on June 21st, 2018). A great number of events were recorded during the caldera collapses, from its beginning untill its rapid ending. The catalog also contains abundant events near the Pu'u'o'o vent and in the lower East Rift Zone, where an increase of seismicity in the mid-July and August indicated a step-up in magma intrusion after the eruption.</p>
A high-resolution earthquake catalog for the Tony Creek dual Microseismic Experiment (ToC2ME)
<p>Location/detection method: In this study, we revisit the continuous recordings that are acquired by 69 three-component nodes at a Hydraulic Fracturing (HF) site in Alberta, Canada, taking advantage of a machine learning-based seismic detection and location workflow (LOC-FLOW). This workflow integrates four key steps to generate earthquake catalogs, including phase picking using neural network (PhaseNet), rapid association of seismic phases (REAL), seismic location (e.g., VELEST) as well as relocation (e.g., hypoDD). The catalog contains 21,619 earthquakes with magnitudes down to -2 and achieves a high location accuracy at meter scale. The improved earthquake locations allow us to better delineate the fractures and faults activated during the HF. Our results further reveal the complexity of the triggering mechanism of HF-induced earthquakes according to the statistical analysis of the frequency-magnitude distribution of earthquakes. Our study suggests that multiple factors, including pore fluid pressure due to fluid injection and perturbation in the stress field caused by earthquakes, can jointly control the spatiotemporal variations of regional seismicity during the multi-stage HF operation. </p>
Earthquake catalog for "Seismicity modulation due to hydrological loading in a stable continental region: a case study from the Jektvik swarm sequence in Northern Norway"
<p>This folder contains earthquake catalog used in "Seismicity modulation due to hydrological loading in a stable continental region: a case study from the Jektvik swarm sequence in Northern Norway" by Shiddiqi et al. (2022) submitted to Geophysical Journal International.</p>
Catalogs of Deep Long Period Earthquakes at Klyuchevskoy Volcanic Group (Kamchatka) 2011-2012
Open the record for dataset details and reuse information.
Earthquake catalog at the Blanco Transform Fault Zone between 2012 and 2013
<p>The csv file provides an earthquake catalog derived from data of ocean-bottom seismometers operated between 2012 and 2013 at the Blanco Transform Fault Zone. The data file is in ASCII text format. The first row is a column header that describes the content of the catalog: Earthquake origin date, time, latitude, longitude, depth and local magnitude. Not all earthquakes have a local magnitude estimate due to data selection.</p>
Catalog of Earthquake Swarms in the Middle America Subduction Zone (2001-2024)
<p>This dataset contains the catalog of earthquake swarms in the Middle America subduction zone from January 2001 to March 2024.</p>
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