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Filters Date Range Past year (16) Past month (1) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (5) Raster (1) Types Map Service (58) OGC WMS Layer (58) OGC WMS Service (55) Downloadable (6) Shapefile (5) More... Contacts Gavin Hayes U.S. Geological Survey U.S. Geological Survey, Geologic Hazards Science Center U.S. Geological Survey, Earthquake Hazards Program Natural Hazards More... Categories Data (48) Data Release - Revised (1) Tag Types Theme (56) Place (55) USGS Scientific Topic Keyword (17) Harvest Set (25) Data Attribute (1) Tag Schemes USGS Thesaurus (44) Geographic Names Information System (GNIS) (36) None (5) Common geographic areas (3) USGS Earthquake Hazards (1) United States (1) GNIS (3) More... View Results as: JSON ATOM CSV

Summary of proposed changes to geologic inputs for the U.S. National Seismic Hazard Model (NSHM) 2023, version 1.0 This data release documents proposed updates to geologic inputs (faults) for the upcoming 2023 National Seismic Hazard Model (NSHM). This version (1.0) conveys differences between 2014 NSHM fault sources and those recently released in the earthquake geology inputs for the U.S. National Seismic Hazard Model (NSHM) 2023, version 1.0 data release by Hatem et al. (2021). A notable difference between the 2014 and 2023 datasets is that slip rates are provided at points for 2023 instead of generalized along the entire fault section length as in 2014; consequently, slip rates are not provided for fault sections in the draft 2023 dataset. Geospatial data (shapefile, kml and geojson) are provided in this data release with... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, California, Colorado, Idaho, Nevada, All tags... New Mexico, Oregon, Texas, USGS Science Data Catalog (SDC), Utah, Washington, Wyoming, hazards, Fewer tags 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 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 Slow-moving landslides near the U.S. West Coast mapped from ALOS and ALOS-2 InSAR, 2007-2019 This data set provides a polygon shapefile delineating relatively large, slow-moving (4-17 cm/year in the radar line-of-sight direction) landslides in the continental U.S. western coastal states (California, Oregon, and Washington). The polygons also are provided in a Google Earth .kmz file. Delineated landslides were identified from displacement signals captured by InSAR (Interferometric Synthetic Aperture Radar) interferograms of ALOS PALSAR (Advanced Land Observing Satellite; Phased Array type L-band Synthetic Aperture Radar) images between 2007 and 2011, and ALOS-2 PALSAR-2 images between 2015 and 2019. The ALOS PALSAR images utilized cover the three states entirely; the ALOS-2 PALSAR images utilized cover primarily... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Geomorphology, Oregon, Remote Sensing, USGS Science Data Catalog (SDC), All tags... Washington, landslides, rocks and deposits, uplift, 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 Landslide Inventories across the United States Landslides are damaging and deadly, and they occur in every U.S. state. However, our current ability to understand landslide hazards at the national scale is limited, in part because spatial data on landslide occurrence across the U.S. varies greatly in quality, accessibility, and extent. Landslide inventories are typically collected and maintained by different agencies and institutions, usually within specific jurisdictional boundaries, and often with varied objectives and information attributes or even in disparate formats. The purpose of this data release is to provide an openly accessible, centralized map of existing information on landslide occurrence across the entire U.S. The data release includes digital... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: GHSC, Geologic Hazards Science Center, Landslide Hazard Program, USGS, USGS Science Data Catalog (SDC), All tags... United States, geology, geoscientificInformation, gis, ground failure, landslide, landslide hazard, landslides, Fewer tags Slow-moving landslides and subsiding fan deltas mapped from Sentinel-1 InSAR in the Glacier Bay region, Alaska and British Columbia, 2018-2020 This data release contains four GIS shapefiles, one Google Earth kmz file, and five metadata files that summarize results from Interferometric Synthetic Aperture Radar (InSAR) analyses in the Glacier Bay region of Alaska and British Columbia. The principal shapefile (Moving_Ground) and the kmz file (GBRegionMovingGround) contain polygons delineating slow-moving (0.5-6 cm/year in the radar line-of-sight direction) landslides and subsiding fan deltas in the region. Landslides and fan deltas were identified from displacement signals captured by InSAR interferograms of Sentinel-1 C-band Synthetic Aperture Radar images. The images were acquired at 12-day intervals from June to October from 2018 to 2020. We applied the... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Climate change, Climatology, Geomorphology, Glacial geology, All tags... Glacier Bay National Park and Preserve, Glacier Bay National Park and Preserve, Glaciology, Hydrology, InSAR, Interferometric Synthetic Aperture Radar, Landslide, Landslide hazards, Remote Sensing, Sentinel, Southeastern Alaska, Southeastern Alaska, Structural Geology, USGS Science Data Catalog (SDC), fan delta, glacial outwash, monitoring, remote sensing, rock slide, tsunami, 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 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 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 Slab2 - A Comprehensive Subduction Zone Geometry Model, Sulawesi 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, Scotia Sea 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, Manila Trench 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 07. Modified Mercalli Intensity maps for the conterminous U.S., Alaska, and Hawaii Peak ground acceleration ground motion values for 50, 10, and 2 percent probability of exceedance in 50 years are converted to equivalent modified Mercalli intensity using the relationships of Worden and others (2012). Values are for NEHRP site class B/C with a VS30 = 760 m/s. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Class B/C, Conterminous United States (CONUS), Earthquake, Hazard, MMI, All tags... NSHM, PSHA, Seismic, exceedance probability, Fewer tags Slab2 - A Comprehensive Subduction Zone Geometry Model, Ryukyu 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, Solomon Islands 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, Puysegur 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, Cotabato 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, Calabria 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 1 2 3 »