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Magnetotelluric data, Southern San Luis Valley, Colorado, 2006: Station 7 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 MT station 29 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, 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 MT station 31 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, Tabor Creek, Wells, Wilkins, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags High-resolution multibeam bathymetry and backscatter data collected in 2004 for the northern Channel Islands region, southern California This data release presents data for 5-m resolution multibeam-bathymetry and acoustic-backscatter data of the northern Channel Islands region, southern California. In 2004 the U.S. Geological Survey, Pacific Coastal and Marine Science Center collected multibeam-bathymetry and acoustic-backscatter data in the northern Channel Islands region, southern California. The region was mapped aboard the R/V Ewing using a Kongsberg Simrad EM-1002 multibeam echosounder. These data were previously published on-line at http://pubs.usgs.gov/of/2005/1153/. In this data release the data have been reprocessed to a finer spatial resolution (5-m versus 15-m) using more modern processing techniques. Due to the large file sizes the entire... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Backscatter (sea floor), Bathymetry, Bathymetry, CMG, CMGP, All tags... Channel Islands, Coastal and Marine Geology Program, Geology, Geophysics, Multibeam sonar, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, Santa Barbara Channel, Seafloor Topography, State of California, U.S. Geological Survey, USGS, data release, environment, geoscientificInformation, imageryBaseMapsEarthCover, oceans, Fewer tags Bathymetric DEM of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 This part of the data release presents a digital elevation model (DEM) created from bathymetry data collected on February 1, 2011, in the Sacramento River from the confluence of the Feather River to Knights Landing. The data were collected by the USGS Pacific Coastal and Marine Science Center (PCMSC) team with collaboration and funding from the U.S. Army Corps of Engineers. This project used interferometric sidescan sonar to characterize the riverbed and channel banks along a 12 mile reach of the Sacramento River, California (River Mile 79 through River Mile 91) to aid in the understanding of fish response to the creation of safe habitat associated with levee restoration efforts in two 1.5 mile reaches of the Sacramento... Categories: Data; Types: Citation; Tags: Bathymetry and Elevation, Echo Sounders, Feather River, GPS (Global Positioning System), Geophysics, All tags... Knights Landing, Sacramento River, Water Depth, Woodland, bathymetry, digital elevation models, elevation, interferometric sonar, levee, multibeam echo sounder, real-time monitoring and reporting, river, sea-floor acoustic reflectivity, sea-floor characteristics, sidescan sonar, Fewer tags Physics-based numerical circulation model outputs of ocean surface circulation during the 2010-2013 summer coral-spawning seasons in Maui Nui, Hawaii, USA Here we present surface current results from a physics-based, 3-dimensional coupled ocean-atmosphere numerical model that was generated to understand coral larval dispersal patterns in Maui Nui, Hawaii, USA. The model was used to simulate coral larval dispersal patterns from a number of existing State-managed reefs and large tracks of reefs with high coral coverage that might be good candidates for marine-protected areas (MPAs) during 8 spawning events during 2010-2013. The goal of this effort is to provide geophysical data to help provide guidance to sustain coral health in Maui Nui, Hawaii, USA. Each model output run is available as a netCDF file with self-contained attribute information. Each file name is appended... Categories: Data; Types: Citation, Map Service, NetCDF OPeNDAP Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMGP, Coastal and Marine Geology Program, Geophysics, Hawaii, Kahoolawe, All tags... Lanai, Maui, Maui Nui, Molokai, PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USA, USGS, United States of America, atmosphere, climatologyMeteorologyAtmosphere, currents, data release, numerical modeling, ocean, ocean circulation, ocean current observations, ocean currents, ocean currents, ocean general circulation models (OGCM)/regional ocean models, ocean surface, oceans, physical oceanography, Fewer tags Magnetotelluric data, Southern San Luis Valley, Colorado, 2006: Station 15 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 data, Southern San Luis Valley, Colorado, 2006: Station 18 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 TEMSLV2011 Transient electromagnetic (TEM) soundings were made in the San Luis Valley, Colorado, to map the location of a blue clay unit as well as to investigate the presence of suspected faults. A total of 147 soundings were made near and in Great Sand Dunes National Park and Preserve, and an additional 6 soundings were made near Hansen Bluff on the eastern edge of the Alamosa National Wildlife Refuge. The blue clay is a significant hydrologic feature in the area that separates an unconfined surface aquifer from a deeper confined aquifer. Knowledge of its location is important to regional hydrological models. Previous analysis of well logs has shown that the blue clay has a resistivity of 10 ohm-meters or less, which is... Types: Citation; Tags: Alamosa County, Alamosa National Wildlife Refuge, Colorado, Great Sand Dunes National Park, Great Sand Dunes National Preserve, All tags... Saguache County, San Luis Valley, TEM, aquifer, clay, clay deposits, electromagnetic surveying, fault detection, faulting (geologic), geophysics, geoscientificInformation, groundwater, subsurface mapping, subsurface maps, transient electromagnetic sounding, Fewer tags MT station 4 This dataset includes the magnetotelluric (MT) sounding data collected in 2008 in and near the Patagonia Mountains of Arizona. The U.S. Geological Survey (USGS) conducted a series of multidisciplinary studies as part of the Assessment Techniques for Concealed Mineral Resources project funded by the USGS Minerals Resources Program in cooperation with the U.S. Forest Service. Types: Citation; Tags: Arizona, CGGSC, Crustal Geophysics and Geochemistry Science Center, Cumero Canyon, Electromagnetic surveying, All tags... GPS measurement, Geophysics, Harshaw, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Mount Hughes, Patagonia, Patagonia Mountains, San Rafael Valley, San Rafael Valley porphyry copper system, Santa Cruz County, Sunnyside porphyry copper system, Time series, apparent resistivity, aquifer, geoscientificinformation, groundwater, hydrogeology, impedance, impedance phase, impedance strike, magnetotelluric, sounding, tipper, Fewer tags Marine seismic profiles used to assess the seismic stratigraphy and structure of the intermediate confining unit and Floridan aquifer system, Broward County, Florida The data set consists of marine seismic-reflection data that includes 34 SEGY data files, navigation data and a CSV format file with a list of files. The archived SEGY files, navigation files, and detailed metadata for these seismic reflections can also be downloaded from the National Archive of Marine Seismic Surveys (NAMSS). https://walrus.wr.usgs.gov/namss//survey/B-1-13-FL/ Marine seismic-reflection data were acquired in canals in eastern Broward County at two different times: February 2010 and April-June 2013, resulting in 34 SEGY data files. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Broward County, Geophysics, Miami-Dade County, Seismology, USA, All tags... USGS Science Data Catalog (SDC), United States, data preservation, geoscientificInformation, marine geophysics, oceans, sea-floor characteristics, seismic reflection methods, Fewer tags Magnetotelluric data, Southern San Luis Valley, Colorado, 2006: Station 13 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 U.S. National Seismic Hazard Maps: Products and Tools The U.S. Geological Survey’s National Seismic Hazard Map Program publishes a number of products and tools designed to provide details of earthquake shaking hazards and help engineers meet modern seismic design provisions for the construction of buildings, bridges, highways, and utilities that are better able to withstand earthquakes, not only saving lives but also enabling critical activities to continue with less disruption. 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, 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 MT station 33 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: CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, Elko County, GPS measurement, All tags... Geophysics, Gold Deposits, Gold Mining, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Nevada, Northern Nevada Gold Province, Oasis, Wells, Wilkins, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags Magnetotelluric survey to characterize the Sunnyside Porphyry Copper System in the Patagonia Mountains, Arizona This dataset includes the magnetotelluric (MT) sounding data collected in 2008 in and near the Patagonia Mountains of Arizona. The U.S. Geological Survey (USGS) conducted a series of multidisciplinary studies as part of the Assessment Techniques for Concealed Mineral Resources project funded by the USGS Minerals Resources Program in cooperation with the U.S. Forest Service. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, CGGSC, Crustal Geophysics and Geochemistry Science Center, Cumero Canyon, Electromagnetic surveying, All tags... GIS, GPS measurement, Geophysics, Harshaw, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Mount Hughes, Patagonia, Patagonia Mountains, San Rafael Valley, San Rafael Valley porphyry copper system, Santa Cruz County, Sunnyside porphyry copper system, Time series, USGS Science Data Catalog (SDC), apparent resistivity, aquifer, geographic information systems, geoscientificinformation, geospatial dataset, groundwater, hydrogeology, impedance, impedance phase, impedance strike, magnetotelluric, sounding, tipper, Fewer tags Multibeam bathymetry and acoustic-backscatter data collected in 2016 in Catalina Basin, southern California and merged multibeam bathymetry datasets of the northern portion of the Southern California Continental Borderland In February 2016 the University of Washington in cooperation with the U.S. Geological Survey, Pacific Coastal and Marine Science Center (USGS, PCMSC) collected multibeam bathymetry and acoustic-backscatter data in and near the Catalina Basin, southern California aboard the University of Washington's Research Vessel Thomas G. Thompson. Data was collected using a Kongsberg EM300 multibeam echosounder hull-mounted to the 274-foot R/V Thomas G. Thompson. The USGS, PCMSC processed these data and produced a series of bathymetric surfaces and acoustic-backscatter images for scientific research purposes. This data release provides a 10-m resolution bathymetry surface and a 10-m resolution acoustic backscatter image. In... Categories: Data; Types: Citation; Tags: Bathymetry, Bathymetry, Bathymetry and Elevation, CMGP, Catalina Basin, All tags... Geology, Geomorphology, Geophysics, Marine Geology, Multibeam sonar, Pacific, Pacific Coastal and Marine Science Center, Seafloor Topography, U.S. Geological Survey, USGS, environment, geoscientificInformation, imageryBaseMapsEarthCover, inlandWaters, sea-floor acoustic reflectivity, Fewer tags MT station 35 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: CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, Elko County, GPS measurement, All tags... Geophysics, Gold Deposits, Gold Mining, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Nevada, North Fork Humboldt River, Northern Nevada Gold Province, Oasis, Wells, Wilkins, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags TEMSLV2009 Transient electromagnetic (TEM) soundings were made in the San Luis Valley, Colorado, to map the location of a blue clay unit as well as to investigate the presence of suspected faults. A total of 147 soundings were made near and in Great Sand Dunes National Park and Preserve, and an additional 6 soundings were made near Hansen Bluff on the eastern edge of the Alamosa National Wildlife Refuge. The blue clay is a significant hydrologic feature in the area that separates an unconfined surface aquifer from a deeper confined aquifer. Knowledge of its location is important to regional hydrological models. Previous analysis of well logs has shown that the blue clay has a resistivity of 10 ohm-meters or less, which is... Types: Citation; Tags: Alamosa County, Alamosa National Wildlife Refuge, Colorado, Great Sand Dunes National Park, Great Sand Dunes National Preserve, All tags... Saguache County, San Luis Valley, TEM, aquifer, clay, clay deposits, electromagnetic surveying, fault detection, faulting (geologic), geophysics, geoscientificInformation, groundwater, subsurface mapping, subsurface maps, transient electromagnetic sounding, Fewer tags Magnetotelluric data, Southern San Luis Valley, Colorado, 2006: Station 3 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 data, Southern San Luis Valley, Colorado, 2006: Station 12 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 « 1 2 3 4 5 ... 7 »