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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 Fourmile Canyon Wildfire Longitudinal Profile Data This dataset represents 25 parallel longitudinal profiles that were extracted from terrestrial lidar point clouds taken during six survey periods. The six lidar surveys were conducted between 7 October 2010 and 8 October 2013. Over that time a colluvial hollow eroded into a fluvial channel. The longitudinal profiles show the topography of the colluvial hollow for each survey period. The width of the original colluvial hollow was approximately 1.25 m, and a longitudinal profile was extracted every 5 cm for the entire length of the hollow, resulting in 25 parallel longitudinal profiles. These data can be used to observe the transition of the colluvial hollow to a fluvial channel and furthermore they show the development... Types: Citation; Tags: Fourmile Canyon, Colorado, GHSC, Geologic Hazards Science Center, LHP, LIDAR, All tags... Landslide Hazards Program, Soil Sciences, USGS, USGS Science Data Catalog (SDC), burned watershed, colluvial hollow, earth science, fluvial channel, landslide hazard, soil erosion, wildfire, wildfire hazard, 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 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 Debris Flow Video Files for Wide Angle Camera (Station 1), Chalk Cliffs, Colorado, USA, 2016 Chalk Cliffs, located 8 miles southwest of Buena Vista, Colorado, is one of the most active debris-flow areas in the state (U.S. Geological Survey). This "Child item" page includes videos of debris flows captured by one of the high-definition cameras at the monitoring site in Chalk Cliffs, CO. This camera (Wide-angle camera) is located near Station 1 on the opposite side of the basin with a broad view of the channel. The attached figure "station_and_camera_locations.png" provides an overview figure with the location of the three cameras and three stations along the channel. Video recording for all cameras is triggered using a rainfall threshold, derived from rainfall measurements from a rain gauge (Michel et al.,... Tags: Chalk Cliffs, Colorado, Geologic Hazards Science Center, Landslide Hazards Program, USGS, All tags... debris flow, flood, geomorphology, hydrology, landslides, video monitoring, videos, 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 Atlantic and Gulf Coastal Plains Sediment Thickness (v220517) This dataset of the elevation of basement and thickness of sediment above the syn- and post-rift unconformity (sediments above being generally Late Cretaceous and younger) was constructed for application to site response models in earthquake hazard analyses. Sediment thickness in meters is provided in zipped csv format on a 0.01-degree grid, and sediment thickness and basement elevation in meters relative to mean sea level are provided in GeoTIFF format on a 1-km grid. Tags: EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, Geophysics, All tags... Seismology, Structural Geology, USGS, USGS Science Data Catalog (SDC), United States, earthquake occurrences, earthquakes, geoscientificInformation, hazards, maps and atlases, sediment thickness, Fewer tags Flood Video Files for Firehose Camera, Chalk Cliffs, Colorado, USA, 2017 Chalk Cliffs, located 8 miles southwest of Buena Vista, Colorado, is one of the most active debris-flow areas in the state (U.S. Geological Survey). This "Child item" page includes videos of floods captured by one of the high-definition cameras at the monitoring site in Chalk Cliffs, CO. This camera (Firehose Camera) is located near the bottom of the channel. The attached figure "station_and_camera_locations.png" provides an overview figure with the location of the four cameras and three stations along the channel. Video recording for all cameras is triggered using a rainfall threshold (Michel et al., 2019). The complete videos for all the cameras are downloaded manually during site visits. More detailed information... Tags: Chalk Cliffs, Colorado, Geologic Hazards Science Center, Landslide Hazards Program, USGS, All tags... debris flow, flood, geomorphology, hydrology, landslides, video monitoring, videos, Fewer tags One-second USGS Stennis (BSL) magnetic observatory data collected before 2013 The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling, geophysics research, space physics research, and space weather hazard assessment and mitigation. Until mid-2011, only 1-minute time resolution magnetic field measurements were archived with the INTERMAGNET consortium following international magnetic observatory standards. 1-second time resolution magnetic field measurements, which had already been collected by all the USGS observatories for up to almost a decade prior, started being archived with INTERMAGNET on June 13, 2011, or July 27, 2012 in the case of the more recently constructed Deadhorse (DED)... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bay Saint Louis Mississippi, Geologic Hazards Science Center, Geomagnetism Program, North America, Stennis Space Center Mississippi, All tags... USGS, United States, geoscientificInformation, magnetic observatory, magnetic scalar field, magnetic variometer, magnetic vector field, magnetometer, Fewer tags Data Release for the 2014 National Seismic Hazard Model for the Conterminous U.S. Seismicity catalogs, GIS shapefiles, gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2014 National Seismic Hazard Model for the Conterminous U.S. Probabilistic seismic hazard data and maps of the conterminous U.S. for peak ground acceleration (PGA) and 0.2 and 1.0 second spectral acceleration at probability levels of 2 percent in 50 years (annual probability of 0.000404) and 10 percent in 50 years (annual probability of 0.0021), assuming firm rock soil conditions at 760 m/s, are available. Hazard was calculated on a 0.05 degree by 0.05 degree grid, defined by a bounding box encompassing the conterminous U.S. (-125 to -65 degrees longitude... Tags: Conterminous U.S., EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Geophysics, NEHRP site classes, NSHM, NSHMP, National Seismic Hazard Model, National Seismic Hazard Model Project, Seismology, U.S. Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), conterminous U.S., ground motion, hazard curve, hazard map, spectral period, Fewer tags Data Release for the 2002 National Seismic Hazard Model for the Conterminous U.S. Seismicity catalogs, gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2002 National Seismic Hazard Model for the Conterminous U.S. Seismicity catalogs are available for the western U.S. (in Mw) and central and eastern U.S. (in mb). Probabilistic seismic hazard data and maps of the conterminous U.S. for peak ground acceleration (PGA) and 0.1, 0.2, 0.3, 0.5, 1.0 and 2.0 second spectral acceleration at probability levels of 2 percent in 50 years (annual probability of 0.000404) and 10 percent in 50 years (annual probability of 0.0021), assuming firm rock soil conditions at 760 m/s, are available. Hazard was calculated on a 0.1 degree by 0.1... Tags: Conterminous U.S., EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Geophysics, NEHRP site classes, NSHM, NSHMP, National Seismic Hazard Model, National Seismic Hazard Model Project, Seismology, U.S. Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), conterminous U.S., ground motion, hazard curve, hazard map, spectral period, Fewer tags Data Release for the 1999 Alaska Seismic Hazard Model Gridded ground motion data and mapped gridded ground motion values are available for the 1999 Alaska Seismic Hazard Model. Probabilistic seismic hazard data and maps of Alaska and the Aleutians for peak ground acceleration (PGA) and 0.2, 0.3, and 1.0 second spectral acceleration at probability levels of 2 percent in 50 years (annual probability of 0.000404) and 10 percent in 50 years (annual probably of 0.0021), assuming firm rock soil conditions at 760 m/s, are available. Development of the 1999 Alaska Seismic Hazard Model is documented in the USGS Open-File Report 99-36 (https://doi.org/10.3133/ofr9936). This dataset is considered a legacy dataset. The original dataset was released at the time of publication... Tags: Alaska, Alaska, EHP, Earthquake Hazards Program, GHSC, All tags... Geologic Hazards Science Center, Geophysics, NEHRP site classes, NSHM, NSHMP, National Seismic Hazard Model, National Seismic Hazard Model Project, Seismology, U.S. Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), ground motion, hazard curve, hazard map, spectral period, 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 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 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 Debris-flow and Flood Video Files, Chalk Cliffs, Colorado, USA, 2015 Chalk Cliffs, located 8 miles southwest of Buena Vista, Colorado, is one of the most active debris-flow areas in the state (U.S. Geological Survey). Three stations were set up at Chalk Cliffs which are located sequentially along a channel draining the 0.3 km2 study area. These stations are equipped with rain gauges, laser distance meters, and data loggers to record rainfall and stage data (Kean, et al., 2020). This data release includes videos of debris-flows and floods captured by high-definition cameras placed at two different locations, associated with the monitoring stations, along the study area at Chalk Cliffs during 2015. Both cameras are located near the Upper Station (Station 1). One is located at the bridge... Tags: Chalk Cliffs, Colorado, Geologic Hazards Science Center, Geomorphology, Hydrology, All tags... Landslide Hazards Program, Soil Sciences, USGS, USGS Science Data Catalog (SDC), Water Resources, debris flow, flood, geomorphology, hydrology, landslides, video monitoring, videos, Fewer tags One-second USGS College (CMO) magnetic observatory data collected before 2013 The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling, geophysics research, space physics research, and space weather hazard assessment and mitigation. Until mid-2011, only 1-minute time resolution magnetic field measurements were archived with the INTERMAGNET consortium following international magnetic observatory standards. 1-second time resolution magnetic field measurements, which had already been collected by all the USGS observatories for up to almost a decade prior, started being archived with INTERMAGNET on June 13, 2011, or July 27, 2012 in the case of the more recently constructed Deadhorse (DED)... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: College Alaska, Fairbanks Alaska, Geologic Hazards Science Center, Geomagnetism Program, North America, All tags... USGS, United States, geoscientificInformation, magnetic observatory, magnetic scalar field, magnetic variometer, magnetic vector field, magnetometer, Fewer tags One-second USGS Guam (GUA) magnetic observatory data collected before 2013 The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling, geophysics research, space physics research, and space weather hazard assessment and mitigation. Until mid-2011, only 1-minute time resolution magnetic field measurements were archived with the INTERMAGNET consortium following international magnetic observatory standards. 1-second time resolution magnetic field measurements, which had already been collected by all the USGS observatories for up to almost a decade prior, started being archived with INTERMAGNET on June 13, 2011, or July 27, 2012 in the case of the more recently constructed Deadhorse (DED)... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Dededo, Guam, Geologic Hazards Science Center, Geomagnetism Program, North America, USGS, All tags... United States, geoscientificInformation, magnetic observatory, magnetic scalar field, magnetic variometer, magnetic vector field, magnetometer, Fewer tags Data Release for the 2018 Update of the U.S. National Seismic Hazard Model: Where, Why, and How Much Probabilistic Ground Motion Maps Changed This dataset presents where, why, and how much probabilistic ground motions have changed with the 2018 update of the National Seismic Hazard Model (NSHM) for the conterminous U.S. (CONUS) vs. the 2014 NSHM. In the central and eastern U.S., hazard changes are the result of updated ground motion models (further broken down by median and epistemic uncertainty, aleatory variability, and site effects models) and gridded seismicity models. In the western U.S., hazard changes are the result of updated ground motion models in four urban areas with deep sedimentary basins and gridded seismicity models. Probabilistic ground motion changes (2% in 50 years probability of exceedance for a firm rock site, VS30 = 760 m/s, NEHRP... Categories: Data; Tags: Conterminous U.S., EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Geophysics, NEHRP site classes, NSHM, NSHMP, National Seismic Hazard Model, National Seismic Hazard Model Project, Seismology, U.S. Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), ground motion, hazard curve, hazard map, spectral period, Fewer tags 1 2 3 4 5 ... 7 »