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Filters Date Types (for Date Range) Extensions Shapefile (3) Types Map Service (7) OGC WFS Layer (6) OGC WMS Layer (6) Downloadable (4) OGC WMS Service (4) More... Contacts Lyndsay B Ball U.S. Geological Survey Peter W Swarzenski Geology, Geophysics, and Geochemistry Science Center Cordell Johnson More... Categories Data (10) Data Release - Under Revision (1) Tag Types Theme (9) Place (10) USGS Scientific Topic Keyword (5) Subject (1) Harvest Set (7) Tag Schemes USGS Thesaurus (9) Common Geographic Areas (2) Geographic Names Information System (GNIS) (6) None (5) none (1) ISO 19115 Topic Categories (3) ISO 19115 Topic Category (5) More... View Results as: JSON ATOM CSV

High-resolution seismic data acquired at six Southern California Seismic Network (SCSN) recording stations in 2017 In August 2017, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data near six Southern California Seismic Network (SCSN) recording stations in southern California: CI.OLI Olinda; CI.SRN Serrano; CI.MUR Murrieta; CI.LCG La Cienega; CI.RUS Rush; and CI.STC Santa Clara (Figure 1). These strong-motion recording stations are located inside Southern California Edison electrical substations, critical infrastructures that provide essential services to millions of customers. The primary goals of the seismic survey were to understand the potential for amplified ground shaking and to evaluate lateral variability in shear-wave velocity at these sites. We deployed up to 88 geophones at 2-m or 4-m... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, Seismology, Shear-wave velocity, Southern California, USGS Science Data Catalog (SDC), All tags... earthquake hazards, ground motion, seismic refraction methods, seismology, shaking, site characterization, surface wave method, Fewer tags Airborne Electromagnetic (AEM) Survey in Southwest and Southeast Areas, Wisconsin, 2022 Airborne electromagnetic (AEM) and magnetic survey data were collected during March 2022 over a distance of 2,574.6 line kilometers in southeast and southwest Wisconsin. These data were collected in support of an effort to improve estimates of depth to bedrock through a collaborative project between the U.S. Geological Survey (USGS), Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP), and Wisconsin Geological and Natural History Survey (WGNHS). Data were acquired by SkyTEM Canada Inc. with the SkyTEM 304M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was acquired at a nominal flight height of 30 - 40 meters (m)... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Crawford County, Dane County, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... Grant County, Green County, Hydrology, Iowa County, Jefferson County, Kenosha County, Lafayette County, Racine County, UMid WSC, USGS Science Data Catalog (SDC), Upper Midwest Water Science Center, Walworth County, Water Resources, Waukesha County, Wisconsin, aeromagnetic surveying, electromagnetic surveying, environment, geophysics, geoscientificInformation, geospatial datasets, resistivity, stratigraphic thickness, Fewer tags Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 4.0, April 2023) (Under Revision) Note: this data release is currently being revised and is temporarily unavailable. This data release is a compilation of the locations of airborne geophysical surveys in the United States. The inventory documents public airborne geophysical surveys primarily flown by or contracted by the USGS from 1943 to present. In addition, surveys from the State of Alaska, Department of Natural Resources, Division of Geological and Geophysical Surveys (DGGS): Airborne GeophysWeb, the Bureau of Land Management, the Department of Energy and other state agencies have also been included. The surveys have contributed to studies under USGS programs including Water, Geologic Mapping, Minerals, Energy, Environmental Health, Ecosystems,... Categories: Data, Data Release - Under Revision; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alabama, Alaska, Arizona, Arkansas, California, All tags... Colorado, Connecticut, Delaware, District of Columbia, Earth MRI, Florida, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, MRP, Maine, Maryland, Massachusetts, Michigan, Mineral Resources Program, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, aeromagnetic surveying, aeroradiometric surveying, electromagnetic surveying, frequency-domain, geophysical, geophysics, geoscientificInformation, geospatial datasets, gravitational field (earth), resistivity, time-domain, Fewer tags NASA GIFT Iceland Highlands: 2019 and 2021 Askja Ground Penetrating Radar (GPR) and Observations This data collection includes ground-penetrating radar (GPR) data and related observations collected from the NASA Goddard Instrument Field Team (GIFT) Expedition to the Icelandic Highlands in July-August 2019 and August 2021. This dataset includes observations at the Askja Volcano and caldera and Vikrahraun lava flow. GPR data were collected using Geophysical Survey Systems, Inc (GSSI) shielded bistatic antennas at center frequencies of 200 MHz, 400 MHz, and 900 MHz. Common offset surveys were conducted to investigate the subsurface interfaces. The GPR data includes raw data obtained from the instrument (as GSSI .dzt files), line shapefiles of survey locations, and interpreted ice thickness GeoPackage files with... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Askja, Iceland, USGS Science Data Catalog (SDC), Volcanic ash, caldera, All tags... geophysics, geoscientificInformation, ground penetrating radar, intra-caldera, permafrost, pumice, pyroclastic, volcanology, Fewer tags Field, Geochemical, Geochronological, and Magnetic Data from a Pliocene basalt flow along the Deschutes River in north-central Oregon This dataset represents a variety of scientific measurements of basalt rock outcrops in central Oregon, United States. It consists of field observations, geochemical measurements, paleomagnetic directional measurements, magnetic susceptibility, and geochronology data (Ar-Ar methodology). This dataset was collected from 2014-2022 by the authors. Categories: Data; Tags: Basalt, Columbia River, Crooked River, Dalles Basin, Deschutes Basin, All tags... Deschutes River, Geochemistry, Geography, Geomorphology, Geophysics, Hydrology, Oregon, Stratigraphy, Structural Geology, Tygh Valley Basin, USGS Science Data Catalog (SDC), Volcanology, erosion, field sampling, geochemistry, geochronology, paleomagnetism, river, volcanic activity, Fewer tags Electrical Resistivity Tomography Inverted Models The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 mi north-northeast of Barstow, California, covers approximately 1,177 square miles, and is comprised of ten groundwater basins, three of which have been subdivided into subbasins on the basis of additional hydrologic testing. Since the early 1990s, the U.S. Geological Survey (USGS) has been studying water resources issues at Fort Irwin. One issue of concern is the potential effect of groundwater development resulting from planned training expansion and infrastructure at the NTC on natural springs and seeps, an important water source for wildlife. In 2010, the USGS entered into cooperative agreements with the U.S. Army to complete studies of... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bicycle Lake, CAWSC, California, California Water Science Center, Electrical Resistivity Tomography, All tags... Fort Irwin, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Mojave, Mojave Desert, San Bernardino County, desert ecosystems, environment, geophysics, geoscientificInformation, groundwater, hydrologic processes, lakebed characteristics, resistivity, water resources, Fewer tags Electrical Resistivity Tomography Data at Fort Irwin National Training Center, San Bernardino County, California, 2015 and 2017 The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 mi north-northeast of Barstow, California, covers approximately 1,177 square miles, and is comprised of ten groundwater basins, three of which have been subdivided into subbasins on the basis of additional hydrologic testing. Since the early 1990s, the U.S. Geological Survey (USGS) has been studying water resources issues at Fort Irwin. One issue of concern is the potential effect of groundwater development resulting from planned training expansion and infrastructure at the NTC on natural springs and seeps, an important water source for wildlife. In 2010, the USGS entered into cooperative agreements with the U.S. Army to complete studies of... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Bicycle Lake, CAWSC, California, California Water Science Center, Electrical Resistivity Tomography, All tags... Fort Irwin, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Hydrogeology, Mojave, Mojave Desert, San Bernardino County, USGS Science Data Catalog (SDC), desert ecosystems, environment, geophysics, geoscientificInformation, groundwater, hydrologic processes, lakebed characteristics, resistivity, water resources, Fewer tags Repeat microgravity data from Santa Cruz River, Tucson, Arizona, 2019-2022 Relative-gravity surveys were carried out using a ZLS Burris relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. Vertical gradients between the different measuring heights of the absolute- and relative-gravity meters were measured using a relative-gravity meter and fully-adjustable tripod, and used to correlate the measurements between the two instruments. Relative-gravity differences and absolute-gravity data were combined using a least-squares network... Categories: Data; Tags: Arizona, Arizona Water Science Center, Geophysics, Heritage, Hydrology, All tags... Southwest Gravity Program, Tucson, USGS Science Data Catalog (SDC), artificial recharge, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), groundwater, time series datasets, Fewer tags Electrical Resistivity Tomography Data The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 mi north-northeast of Barstow, California, covers approximately 1,177 square miles, and is comprised of ten groundwater basins, three of which have been subdivided into subbasins on the basis of additional hydrologic testing. Since the early 1990s, the U.S. Geological Survey (USGS) has been studying water resources issues at Fort Irwin. One issue of concern is the potential effect of groundwater development resulting from planned training expansion and infrastructure at the NTC on natural springs and seeps, an important water source for wildlife. In 2010, the USGS entered into cooperative agreements with the U.S. Army to complete studies of... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bicycle Lake, CAWSC, California, California Water Science Center, Electrical Resistivity Tomography, All tags... Fort Irwin, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Mojave, Mojave Desert, San Bernardino County, desert ecosystems, environment, geophysics, geoscientificInformation, groundwater, hydrologic processes, lakebed characteristics, resistivity, water resources, Fewer tags Repeat microgravity data from South Houghton Area Recharge Project, Tucson, Arizona, 2020-2021 (Under Revision) Note: this data release is currently being revised and is temporarily unavailable. Relative-gravity surveys were carried out using a ZLS Burris relative-gravity meter. The effect of solid Earth tides and ocean loading were removed from the data. Instrument drift was removed by evaluating gravity change during repeated measurements at one or more base stations. Absolute-gravity surveys were carried out using a Micro-g LaCoste, Inc. A-10 absolute-gravity meter. Vertical gradients between the different measuring heights of the absolute- and relative-gravity meters were measured using a relative-gravity meter and fully-adjustable tripod, and used to correlate the measurements between the two instruments. Relative-gravity... Categories: Data; Tags: Arizona, Arizona Water Science Center, SHARP, Southwest Gravity Program, Tucson, All tags... artificial recharge, geophysics, geoscientificInformation, gravimeter measurement, gravitational field (earth), groundwater, time series datasets, Fewer tags