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Magnetotelluric sounding data, station 05, north eastern Nevada, 2003 This dataset includes the magnetotelluric (MT) sounding data collected in 2003 along a north-south profile west of Wendover, Nevada. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S.... Tags: CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, Elko County, GPS measurement, All tags... Geophysics, Gold Deposits, Gold Mining, Goshute Valley, Great Basin, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Nevada, Northern Nevada Gold Province, Pequop Mountains, TF, Tensor, Toano Range, Transfer functions, Wells, West Wendover, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags U.S. Seismic Hazard Maps - 2002 Edition The 2002 U.S. Geological Survey (USGS) National Seismic Hazard Maps display earthquake ground motions for various probability levels across the United States and are applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. This update of the maps incorporates new findings on earthquake ground shaking, faults, seismicity, and geodesy. The resulting maps are derived from seismic hazard curves calculated on a grid of sites across the United States that describe the frequency of exceeding a set of ground motions. Types: Citation; Tags: B/C site class boundary, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Hazard Maps, NEHRP, National Earthquake Hazard Reduction Program, National Seismic Hazard Maps, Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), United States, Vs30, building codes, earthquake ground motions, earthquake probability, geophysics, insurance rate structures, probabilistic hazard maps, public policy, risk assessments, seismic hazard, seismic hazard curves, seismic provisions, spectral accelerations, tectonic, Fewer tags Magnetotelluric data, Southern San Luis Valley, Colorado, 2006: Station 2 This dataset includes the magnetotelluric (MT) sounding data collected in 2006 in the Southern San Luis Valley, Colorado. The U.S. Geological Survey conducted a series of multidisciplinary studies, including MT surveys, in the San Luis Valley to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The shallow unconfined and the deeper confined Santa Fe Group aquifers in the San Luis Basin are the main sources of municipal water for the region. The population of the San Luis Valley region is growing rapidly and water shortfalls could have serious consequences. Future growth and land management... Types: Citation; Tags: Colorado, Costilla County, Electromagnetic surveying, GPS measurement, Geophysics, All tags... MT, Magnetic field (earth), Magnetic surveying, Rocky Mountains, San Luis Valley, apparent resistivity, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, tipper, Fewer tags Magnetotelluric sounding data, station 21, north eastern Nevada, 2003 This dataset includes the magnetotelluric (MT) sounding data collected in 2003 along a north-south profile west of Wendover, Nevada. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S.... Tags: Boone Spring Hills, CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, GPS measurement, All tags... Geophysics, Gold Deposits, Gold Mining, Goshute Reservation, Great Basin, Humboldt National Forest, Little Valley, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Negro Creek, Nevada, Northern Nevada Gold Province, Pequop Mountains, Schell Creek Range, Six Mile Creek, Snake Mountains, Spring Creek, Spring Valley, TF, Tensor, Transfer functions, Wells, West Wendover, White Cloud Mountain, White Pine County, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags Magnetotelluric sounding data, station 1, Taos Plateau Volcanic Field, New Mexico, 2009 This dataset includes the magnetotelluric (MT) sounding data collected in 2009 in and near the San Luis Basin, New Mexico. The U.S. Geological Survey conducted a series of multidisciplinary studies, including MT surveys, in the San Luis Basin to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The shallow unconfined and the deeper confined Santa Fe Group aquifers in the San Luis Basin are the main sources of municipal water for the region. The population of the San Luis Basin region is growing rapidly and water shortfalls could have serious consequences. Future growth and land management... Types: Citation; Tags: CGGSC, Cerro, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, GPS measurement, All tags... Geophysics, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, New Mexico, Questa, Rocky Mountains, San Luis Valley, Taos, Taos County, Tres Piedras, apparent resistivity, aquifer, geoscientificinformation, groundwater, hydrogeology, impedance, impedance phase, impedance strike, magnetotelluric, sounding, tipper, Fewer tags MT station 30 This dataset includes the magnetotelluric (MT) sounding data collected in 2005 along an east-west profile north of Wells, Nevada. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S. Geological... Types: Citation; Tags: Bishop Creek, CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, Elko County, All tags... GPS measurement, Geophysics, Gold Deposits, Gold Mining, Humboldt River, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Nevada, Northern Nevada Gold Province, Oasis, Snake Mountains, Wells, Wilkins, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags Magnetotelluric sounding data, station 12, East-Central Tooele County, Utah, 2003 This dataset includes the magnetotelluric (MT) sounding data collected in 2003 along a north-south profile west of Tooele, Utah. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S. Geological... Tags: Archean Wyoming craton, CGGSC, Cedar Mountains, Crustal Geophysics and Geochemistry Science Center, Dugway Proving Grounds, All tags... Electromagnetic surveying, GPS measurement, Geophysics, Gold Deposits, Gold Mining, Great Basin, Great Salt Lake, Great Salt Lake Desert, Juab County, Lakeside Mountains, Lakeside Valley, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Mojave province, Northern Nevada Gold Province, Onaqui Mountains, Sheeprock Mountains, Simpson Mountains, Skull Valley, Skull Valley Reservation, Stansbury Mountains, Tooele, Tooele Army Depot, Uinta National Forest, Utah, Utah Test and Training Range, Vernon, Wasatch National Forest, apparent resistivity, aquifer, deformation, geoscientificinformation, hydrothermal activity, impedance, impedance phase, impedance strike, localized mineralization, magmatism, magnetotelluric, regional fluid flow, sedimentation, sounding, suture zone, tipper, Fewer tags Data for Frictional Properties and 3-D Stress Analysis of the Southern Alpine Fault, New Zealand (2013) New Zealand’s Alpine Fault (AF) ruptures quasi-periodically in large-magnitude earthquakes. Paleoseismological evidence suggests that about half of all recognized AF earthquakes terminated at the boundary between the Central and South Westland sections of the fault. There, fault geometry and the polarity of uplift change. The South Westland AF exhibits oblique-normal fault motion on a structure oriented 055/82SE that, for at least 35 km along strike, contains saponite-rich principal slip zone gouges. New hydrothermal friction experiments reveal that the saponite fault gouge is frictionally weak, exhibiting friction coefficients between =0.12 and =0.16 for a range of temperatures (T=25–210 C) and effective normal... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, New Zealand, Structural Geology, USGS Science Data Catalog (SDC), earthquake hazard, All tags... frictional strength, stress state, Fewer tags Station_rgr203 This dataset consists of 102 magnetotelluric (MT) stations collected in 2012-2014 in the Rio Grande Rift and southern Rocky Mountains. The U.S. Geological Survey acquired these data to improve regional conductivity models of the western United States. This work is in support of studies of the effect of lithospheric modification on electrical resistivity structure and tectonic evolution of the western United States. Tags: Colorado Plateau, Electromagnetic surveying, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... MRP, MT, Magnetic field (earth), Mineral Resources Program, New Mexico, Rio Grande Rift, apparent resistivity, geoscientificInformation, impedance, magnetotelluric, phase, regional conductivity models, time series, tipper, Fewer tags Station_rgr320 This dataset consists of 102 magnetotelluric (MT) stations collected in 2012-2014 in the Rio Grande Rift and southern Rocky Mountains. The U.S. Geological Survey acquired these data to improve regional conductivity models of the western United States. This work is in support of studies of the effect of lithospheric modification on electrical resistivity structure and tectonic evolution of the western United States. Tags: Electromagnetic surveying, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Great Plains, All tags... MRP, MT, Magnetic field (earth), Mineral Resources Program, New Mexico, Rio Grande Rift, apparent resistivity, geoscientificInformation, impedance, magnetotelluric, phase, regional conductivity models, time series, tipper, Fewer tags Station_rgr403 This dataset consists of 102 magnetotelluric (MT) stations collected in 2012-2014 in the Rio Grande Rift and southern Rocky Mountains. The U.S. Geological Survey acquired these data to improve regional conductivity models of the western United States. This work is in support of studies of the effect of lithospheric modification on electrical resistivity structure and tectonic evolution of the western United States. Tags: Basin and Range, Electromagnetic surveying, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... MRP, MT, Magnetic field (earth), Mineral Resources Program, New Mexico, Rio Grande Rift, apparent resistivity, geoscientificInformation, impedance, magnetotelluric, phase, regional conductivity models, time series, tipper, Fewer tags Station_rgr409 This dataset consists of 102 magnetotelluric (MT) stations collected in 2012-2014 in the Rio Grande Rift and southern Rocky Mountains. The U.S. Geological Survey acquired these data to improve regional conductivity models of the western United States. This work is in support of studies of the effect of lithospheric modification on electrical resistivity structure and tectonic evolution of the western United States. Tags: Basin and Range, Electromagnetic surveying, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... MRP, MT, Magnetic field (earth), Mineral Resources Program, New Mexico, Rio Grande Rift, apparent resistivity, geoscientificInformation, impedance, magnetotelluric, phase, regional conductivity models, time series, tipper, 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 Floating transient electromagnetic (FloaTEM) surveys in the Delaware River near Barryville, New York Floating transient electromagnetic (FloaTEM) data were acquired on the Upper Delaware River during December 2018. During the survey, approximately 10 line-kilometers were collected in the Upper Delaware River, near USGS boring 12008-14 (https://webapps.usgs.gov/GeoLogLocator/#!/search) near Barryville, New York study area. Data were collected by members of the U.S. Geological Survey, Hydrogeophysics Branch, New England Water Science Center, and the National Park Service UPDE. FloaTEM data acquired along the Delaware River in Sullivan County, in New York, were collected to test a new continuous water-borne transient electromagnetic data collection platform, and to characterize the subsurface resistivity structure.... Tags: Barryville, Delaware River, New York, Sullivan County, Upper Delaware River, All tags... electrical resistivity imaging, electromagnetic surveying, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, resistivity, water resources, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018; Station AMTCC04 This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 24 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09). Tags: "San Juan" County, AMT, Colorado, GGGSC, GPS measurement, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, MT, Mineral Resources Program, Silverton, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, geoscientificInformation, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, sounding, tipper, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018; Station AMTGK01 This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 24 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09). Tags: "San Juan" County, AMT, Colorado, GGGSC, GPS measurement, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, MT, Mineral Resources Program, Silverton, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, geoscientificInformation, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, sounding, tipper, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018; Station AMTGK06 This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 24 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09). Tags: "San Juan" County, AMT, Colorado, GGGSC, GPS measurement, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, MT, Mineral Resources Program, Silverton, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, geoscientificInformation, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, sounding, tipper, Fewer tags Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018; Station AMTGK07 This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 24 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09). Tags: "San Juan" County, AMT, Colorado, GGGSC, GPS measurement, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, MT, Mineral Resources Program, Silverton, apparent resistivity, audiomagnetotelluric, economy, electric field (earth), geophysics, geoscientificInformation, impedance, impedance phase, impedance strike, magnetic field (earth), magnetotelluric, magnetotelluric surveying, sounding, tipper, Fewer tags 1 2 3 4 5 ... 26 »