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Filters Date Range Past year (7) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (2) Raster (1) Types Map Service (38) OGC WFS Layer (38) OGC WMS Layer (38) OGC WMS Service (36) Citation (24) More... Contacts Gavin Hayes U.S. Geological Survey U.S. Geological Survey - ScienceBase U.S. Geological Survey, Geologic Hazards Science Center U.S. Geological Survey, Earthquake Hazards Program More... Categories Data (39) Data Release - Revised (2) Tag Types Theme (75) Place (75) USGS Scientific Topic Keyword (21) Harvest Set (29) Data Attribute (1) Tag Schemes USGS Thesaurus (69) Geographic Names Information System (GNIS) (69) USGS Earthquake Hazards (3) Earthquake Hazards Program; GHSC; Geologic Hazards Science Center; USGS; U.S. Geological Survey; Earthquake; Wilzetta fault zone; Meeker-Prague fault; Prague; Oklahoma; Aftershock (1) earthquake seismology (1) FGDC (1) Common geographic areas (1) More... View Results as: JSON ATOM CSV

Slab2 - A Comprehensive Subduction Zone Geometry Model, Sumatra-Java Region Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... USGS, earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags ShakeMap – Earthquake Ground Motion and Shaking Intensity Maps ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake response and recovery, public and scientific information, as well as for preparedness exercises and disaster planning. Types: Citation; Tags: ANSS, Advanced National Seismic System, ComCat, Comprehensive Earthquake Catalog, Earth, All tags... Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, ShakeMap, USGS, disaster planning, earth science, earthquake hazard, geophysics, ground motion, post-earthquake recovery, post-earthquake response, preparedness exercises, real time monitoring, regional earthquake, regional seismic networks, seismic hazard, seismology, shaking intensity, tectonophysics, Fewer tags A database of instrumentally recorded ground motion intensity measurements from induced earthquakes in Oklahoma and Kansas The database contains uniformly processed ground motion intensity measurements (peak horizontal ground motions and 5-percent-damped pseudospectral accelerations for oscillator periods 0.1–10 s). The earthquake event set includes more than 3,800 M≥3 earthquakes in Oklahoma and Kansas from January 2009 to December 2016. Ground motion time series were collected out to 500 km. We also relocated the majority of the earthquake hypocenters using a multiple-event relocation algorithm to produce a set of near-uniformly processed hypocentral locations. Details about data processing are reported in the accompanying article. First posted - October 11, 2017 Revised - December 18, 2017, ver. 1.1 Categories: Data, Data Release - Revised; Tags: EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Kansas, All tags... Oklahoma, USGS, USGS Science Data Catalog (SDC), earthquake, earthquake ground motion, earthquake hazard, geophysics, ground motion intensity, induced earthquake, relocated earthquake hypocenter, seismic hazard, spectral acceleration, Fewer tags Earthquake Hazards Program: Earthquake Scenarios A scenario represents one realization of a potential future earthquake by assuming a particular magnitude, location, and fault-rupture geometry and estimating shaking using a variety of strategies. In planning and coordinating emergency response, utilities, local government, and other organizations are best served by conducting training exercises based on realistic earthquake situations—ones similar to those they are most likely to face. ShakeMap Scenario earthquakes can fill this role. They can also be used to examine exposure of structures, lifelines, utilities, and transportation corridors to specified potential earthquakes. A ShakeMap earthquake scenario is a predictive ShakeMap with an assumed magnitude and... Types: Citation; Tags: Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, ShakeMap, USGS, All tags... United States, earth science, earthquake hazard, earthquake scenario, fault-rupture geometry, geophysics, seismic hazard, seismology, Fewer tags Geophysical Site Characterization of Bay Area Seismic Monitoring Stations: Vs-depth Profiling, NEHRP Site Classifications, and Linear Shallow Seismic Amplification Functions New active-source shallow seismic (shear-wave and acoustic-wave) measurements were obtained at 18 prioritized seismic monitoring station locations in the north San Francisco Bay area to measure site-specific ground motion amplification effects, soil depth, depth to bedrock (Z1.0 Vs=1 km/s), calculate site specific velocity-depth profiles and Vs30, and develop NEHRP site classifications for each location. This study was led by Principal Investigators Jamey Turner, Cooper Brossy, and Daniel O’Connell and field data were acquired by Glendon Adams and Lincoln Steele. Seismic monitoring sites that recorded high PGA values during the M6.0 Napa earthquake, proximal to higher population densities, and sites recommended... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... NEHRP, Napa, National Earthquake Hazards Reduction Program, PGA, PGV, San Francisco Bay, USGS, United States, earth science, earthquake hazard, geophysical survey, geophysics, peak ground acceleration, peak ground velocity, seismic hazards, seismic monitoring, seismic velocity, seismology, shear wave velocity, tectonophysics, Fewer tags Inventory of landslides triggered by the 2020 Puerto Rico earthquake sequence Here we present an inventory of remotely and field-observed landslides triggered by 2019-2020 Puerto Rico earthquake sequence. The inventory was mapped using pre- and post-event satellite imagery (PR_landslide_inventory_imagery.csv), an extensive collection of field observations (https://doi.org/10.5066/P96QNFMB) and using pre-earthquake lidar as guidance for mapping polygons with more precise locations and geometries (2015 - 2017 USGS Lidar DEM: Puerto Rico dataset). The inventory consists of a shapefile of 309 polygons (PR_landslide_inventory_pts.shp) outlining the source area and deposits together. It also includes a point inventory (PR_landslide_inventory_pts.shp) marking 170 individual displaced boulders that... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Guayanilla, Guánica, All tags... Landslide Hazards Program, Peñuelas, Ponce, Puerto Rico, USGS, USGS Science Data Catalog (SDC), United States, earth science, earthquake hazard, geophysics, landslide, rock fall, seismic hazard, seismology, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. ##### This distribution includes models of three-dimensional slab geometry under... Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Geophysics, Seismology, USGS, USGS Science Data Catalog (SDC), earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags Preliminary Determination of Epicenters (PDE) Bulletin The NEIC global earthquake bulletin is called the Preliminary Determination of Epicenters or PDE, and is one of many discrete products in the ANSS Comprehensive Catalog (ComCat). We use the word "Preliminary" for our final bulletin because the Bulletin of the International Seismological Centre is considered to be the final global archive of parametric earthquake data, in other words phase arrival (“pick”) times and amplitudes. Types: Citation; Tags: ANSS, Advanced National Seismic System, ComCat, Comprehensive Earthquake Catalog, Earth, All tags... Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, NEIC, National Earthquake Information Center, PDE, Preliminary Determination of Epicenters Bulletin, USGS, earth science, earthquake hazard, epicenter, geophysics, real time monitoring, seismic hazard, seismology, tectonophysics, Fewer tags 2016 Mw 6.0 Petermann Ranges earthquake, Australia: Pre- and post-earthquake digital elevation models We generated digital elevation models (DEMs) using pre- and post-event in-track stereo 0.5 m resolution panchromatic Worldview 1 and 2 images (©2019, DigitalGlobe) using the Surface Extraction from TIN-based Searchspace Minimization (SETSM) software [Noh and Howat, 2015] running on the University of Iowa Argon supercomputer (Table S1). The post-event DEMs exhibit along-track striping artifacts common to the Worldview 2 sensor. While de-striping tools, for example within NASAs Ames Stereo Pipeline [Shean et al., 2016], are commonly applied to resolve this issue, a de-striping correction has not been developed for this latitude. Noh, M.-J., and I. M. Howat (2015), Automated stereo-photogrammetric DEM generation... Tags: DSM, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Geomorphology, Geophysics, Petermann Ranges, Australia, USGS, USGS Science Data Catalog (SDC), digital surface models, earth science, earthquake hazard, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model, South America Region Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... USGS, earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags A Compilation of Vs30 Values in the United States Compiled Vs30 measurements obtained by studies funded by the U.S. Geological Survey (USGS) and other governmental agencies. Thus far, there are 2,997 sites in the United States, along with metadata for each measurement from government-sponsored reports, Web sites, and scientific and engineering journals. Most of the data originated from publications directly reporting the work of field investigators. A small subset (less than 20 percent) of Vs30 values was previously compiled by the USGS and other research institutions. Whenever possible, Vs30 originating from these earlier compilations were crosschecked against published reports. Both downhole and surface-based Vs30 estimates are represented. Most of the VS30 data... Types: Citation; Tags: Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, USGS, All tags... Vs30, Vs30 coefficients, average shear-velocity, earth science, earthquake hazard, emergency management, emergency manager, emergency responder, emergency response, first-order assessment of seismic site conditions, geology, geophysics, ground-motion prediction, ground-shaking, seismic hazard, seismic site conditions, seismology, shear-velocity, topographic slope, topographic slope-based Vs30 maps, topography, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model, Pamir Region Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... USGS, earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags Earthquake Relocations for the 2008 Wells, Nevada Earthquake Sequence The 2008 Wells, Nevada Earthquake Sequence: Source Constraints using Calibrated Multiple Event Relocation and InSAR Categories: Data; Tags: Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Geophysics, InSAR, All tags... Seismology, USGS, USGS Science Data Catalog (SDC), United States, Wells, Nevada, calibrated multiple event relocation, earthquake, earthquake hazard, earthquake relocation, geophysics, seismic hazard, seismology, source constraints, tectonic, Fewer tags Seismic Reflection Profiles in the Northern Mississippi Embayment About 280 kilometers of multichannel (common-depth-point) seismic reflection profiles were obtained in the central Mississippi River Valley by Geophysical Service Inc. and Western Geophysical Company under contracts with the U.S. Geological Survey. The specific area of the profiles is southeastern Missouri, northeastern Arkansas, and northwestern Tennessee. Geologically, the area is located in the northern part of the Mississippi Embayment. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Central Mississippi River Valley, New Madrid, Missouri, Northeastern Arkansas, Northern Mississippi Embayment, Northwestern Tennessee, All tags... Southeastern Missouri, United States, earthquake hazard, regional geologic structure, seismic reflection profile, vibroseis, Fewer tags Data for P- and S-wave Seismic Velocity Models Incorporating the Cascadia Subduction Zone for 3D Earthquake Ground Motion simulations- Update for Open-File Report 2007-1348 The data for this release is an ASCII file containing grid points of Cascadia P- and S-wave velocity models. The model volume was developed to include the Cascadia subduction zone for purposes of ground motion simulation. The description of the model and background of its development is provided in the associated Open-File Report. The grid points are given in Universal Transverse Mercator (UTM) Zone 10 North coordinates for East and North locations, and the grid point depths are given in meters below mean sea level. Grid point spacing is 500 meters in each ordinal direction. The model region extends approximately from 40.2°N to 50°N latitude, and approximately from 122°W to 129°W longitude. The maximum depth of... Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Cascadia Subduction Zone, Cascadia subduction zone, EHP, Earthquake Hazards Program, GHSC, All tags... Geologic Hazards Science Center, P- and S-wave velocity models, Seismology, USGS, USGS Science Data Catalog (SDC), earth science, earthquake hazard, ground motion simulation, Fewer tags Data for Systematic Observations of the Slip-pulse Properties of Large Earthquake Ruptures This data release includes geodetic time series from high-rate GPS instruments recording 4 earthquakes co-seismically in the near-field – the 2010 Maule, Chile earthquake; the 2012 Nicoya, Costa Rica earthquake; the 2014 Iquique, Chile earthquake; and the 2015 Gorkha, Nepal earthquake. For each earthquake, data (sac files, 1 Hz sampling, ~2-3 minutes around the earthquake origin time) are included in a separate folder. Each sac file provides a time series of ground displacement from the earthquake as recorded at that station. The location of each station is listed in the relevant earthquake file in the “_station_info” folder. Types: Citation; Tags: EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Gorkha, Nepal, All tags... Iquique, Chile, Maule, Chile, Nicoya, Costa Rica, USGS, USGS Science Data Catalog (SDC), earth science, earthquake hazard, great-sized earthquake, large earthquake ruptures, slip-pulse properties, Fewer tags Digital Surface Models for the northern 16 km of the 1983 Borah Peak earthquake rupture, northern Lost River fault zone (Idaho, USA) We present high-resolution (10-cm pixel) digital surface models (DSMs) generated for the northern 16 km of the surface rupture associated with the 1983 Mw 6.9 Borah Peak earthquake. These DSMs were generated using Agisoft Photoscan (and Metashape) image-based modeling software and low-altitude aerial photographs acquired from unmanned aircraft systems and a tethered balloon. DSM files consist of GeoTIFFs with georeferencing information stored in the file headers. Tags: Borah Peak, Idaho, DSM, EHP, Earthquake Hazards Program, GHSC, All tags... Geologic Hazards Science Center, Geophysics, Seismology, USGS, USGS Science Data Catalog (SDC), digital surface models, earth science, earthquake hazard, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model, Hellenic Arc Region Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... USGS, earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model, Caribbean Region Subduction zones are home to the most seismically active faults on the planet. The shallow megathrust interface of subduction zones host our largest earthquakes, and are the only faults capable of M9+ ruptures. Despite these facts, our knowledge of subduction zone geometry - which likely plays a key role in determining the spatial extent and ultimately the size of subduction zone earthquakes - is incomplete. Here we calculate the three- dimensional geometries of all active global subduction zones. The resulting model - Slab2 - provides for the first time a comprehensive geometrical analysis of all known slabs in unprecedented detail. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: EHP, Earth, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... USGS, earth science, earthquake hazard, large earthquake ruptures, shallow megathrust interface, subduction zone, subduction zone geometry model, Fewer tags Data Set S1 for "Coseismic Sackungen in the New Madrid Seismic Zone, USA" The New Madrid Seismic Zone presents significant seismic hazard to the central and eastern United States. We mapped newly-identified coseismic ridge-spreading features, or sackungen, in the bluffs east of the Mississippi River in western Tennessee. We use this mapping dataset in an accompanying manuscript to show that sackungen form during earthquakes on the Reelfoot fault and may fail in preferred orientations. Ultimately, these data can be used to infer fault source and mechanism and improve the paleoseismic record used in hazard models. Tags: EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Geophysics, All tags... Mississippi River, New Madrid Seismic Zone, Reelfoot fault, Seismology, Tennessee, USA, USGS, USGS Science Data Catalog (SDC), coseismic ridge-spreading features, earth science, earthquake hazard, fault, fault mechanism, fault source, hazard models, paleoseismic record, sackungen, Fewer tags 1 2 3 4 »