Filters: Tags: seismic methods (X) > Types: Map Service (X)

Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Raster (3) Shapefile (3) Types OGC WFS Layer (9) OGC WMS Layer (9) Downloadable (6) OGC WMS Service (6) GeoTIFF (3) Raster (3) Shapefile (3) Contacts U.S. Geological Survey - ScienceBase Carole D Johnson U.S. Geological Survey Pacific Coastal and Marine Science Center William W Danforth More... Categories Data (8) Tag Types Theme (12) Place (12) USGS Scientific Topic Keyword (6) Harvest Set (6) Tag Schemes None (7) USGS Thesaurus (12) Marine Realms Information Bank (MRIB) keywords (8) ISO 19115 Topic Category (10) none (3) Data Categories for Marine Planning (4) Geographic Names Information System (GNIS) (2) More... View Results as: JSON ATOM CSV

Surface geophysics investigations at Edwards Air Force Research Laboratory, Antelope Valley, California, 2018 The Air Force Research Laboratory (AFRL) is about 7 kilometers southwest of Boron, California, and covers 320 square kilometers of Edwards Air Force Base. The AFRL consists of 12 facilities for testing full-size rocket engines, engine components, and liquid and solid propellants. The historical release of contaminants from rocket test stands, evaporation ponds, burn pits, catch basins, and leaking waste-collection tanks has contaminated groundwater in the AFRL. Groundwater aquifers near the AFRL are mostly restricted to fractured granitic bedrock, but previous studies indicate that groundwater and associated contaminants have moved into alluvium to the north and northwest. The U.S. Geological Survey (USGS) and the... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Antelope-Fremont Valleys, Boron, California, California Water Science Center, Edwards Air Force Base, All tags... Electrical Resistivity Tomography, Environmental Health, Geochemistry, Geomorphology, Geophysics, Hydrogeology, Kern County, Leuhman Ridge, Mojave Desert, North Edwards, Remote Sensing, Seismology, Soil Sciences, Structural Geology, USGS Science Data Catalog (SDC), Water Quality, Water Resources, bedrock geologic units, electromagnetic surveying, environment, geophysics, geoscientificInformation, groundwater, hydrologic processes, seismic methods, water resources, Fewer tags High-resolution seismic data acquired at northern Año Nuevo, California The U.S. Geological Survey acquired high-resolution P- and S-wave seismic data across the Frijoles Fault strand of the San Gregorio Fault Zone (SGFZ) at northern Año Nuevo, California in 2012. SGFZ is a right-lateral fault system that is mainly offshore, and prior studies provide highly variable slip estimates, which indicates uncertainty about the seismic hazard it poses. Therefore, the primary goal of the seismic survey was to better understand the structure and geometry of the onshore section of the Frijoles Fault strand of the SGFZ. We deployed 118 geophones (channels) at 5-m spacing along a linear profile centered on the mapped surface trace of the Frijoles Fault and co-located active P- and S-wave sources... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ano Nuevo, California, Central California Coastal, Geophysics, Seismology, All tags... USGS Science Data Catalog (SDC), earthquake zone, earthquakes, fault, fault zones, geoscientificInformation, hazards, seismic methods, seismic refraction methods, tomography, Fewer tags MGL1111bathygeo.tif: Multibeam bathymetry data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in GeoTIFF format, geographic (latitude, longitude) coordinates This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S. Geological Survey (USGS) cruise MGL1111 aboard the R/V Marcus G. Langseth. Calibrated backscatter-intensity time-series data were adjusted for range-angle, beam pattern, and power-gain distortions. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, PCMSC, All tags... Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, U.S. Geological Survey, USGS, bathymetry, continental shelf, environment, geoscientificInformation, geospatial datasets, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, seismic methods, Fewer tags Borehole, Surface and Water-Borne Geophysical Surveys at the Callahan Mine Superfund Site in Brooksville, Maine: October 2016 to July 2018 From October 2016 to July 2018, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and Maine Department of Transportation, collected surface, marine and borehole geophysical surveys to characterize the subsurface materials on land and under the water at a former mine facility in Brooksville, Maine. Three water-based geophysical methods were used to evaluate the geometry and composition of subsurface materials. Continuous seismic profiling (CSP) methods provide the depth to water bottom, and, when sufficient signal penetration can be achieved, delineate the depth to bedrock and subbottom materials. Continuous resistivity profiling (CRP) and frequency domain electromagnetics (FDEM) methods... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Brooksville, Maine, Continuous seismic reflection, Electromagnetic induction, Frequency domain electromagnetic, Groundwater, All tags... Resistivity, USGS Science Data Catalog (SDC), Water Resources, borehole logging, borehole temperature logging, continuous resistivity profiling, electrical resistivity imaging, electrical resistivity logging, electromagnetic surveying, gamma-ray logging, geophysics, seismic methods, Fewer tags Geophysical Data Collected for an Assessment of a Proposed Landfill Site in Fredericktown, Missouri, June 2018 In June 2018, the U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected geophysical measurements to help evaluate the suitability of a proposed landfill site for disposing mine-waste materials in Fredericktown, Missouri. Geophysical methods were used to evaluate and characterize the unconsolidated sediment (i.e., regolith) above the crystalline bedrock as well as determine depth bedrock. Land-based geophysical methods included frequency domain electromagnetic induction (FDEM), electrical resistivity tomography (ERT), horizontal-to-vertical spectral ratio passive seismic (HVSR), and shear-wave seismic refraction. Water-borne methods included FDEM surveys to characterize... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Groundwater, Horizontal-to-Vertical Spectral Ratio (HVSR) Seismic, Hydrology, Missouri, Passive Seismic, All tags... Seismic Methods, Shear-wave velocity, USGS Science Data Catalog (SDC), Water Quality, electrical resistivity imaging, electromagnetic surveying, environment, forward looking infrared imaging, geophysics, geoscientificInformation, marine geophysics, resistivity, shear wave, soil temperature, water temperature, Fewer tags MGL1111backsutm.tif: Multibeam backscatter data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in GeoTIFF format, UTM zone 60 coordinates This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S. Geological Survey (USGS) cruise MGL1111 aboard the R/V Marcus G. Langseth. Calibrated backscatter-intensity time-series data were adjusted for range-angle, beam pattern, and power-gain distortions. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, PCMSC, Pacific Coastal and Marine Science Center, All tags... Physical Habitats and Geomorphology, Substrate, U.S. Geological Survey, USGS, backscatter intensity, continental shelf, environment, geoscientificInformation, geospatial datasets, image mosaics, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, sea-floor acoustic reflectivity, sea-floor characteristics, seismic methods, Fewer tags Quaternary faults offshore of California A comprehensive map of Quaternary faults has been generated for offshore of California. The Quaternary fault map includes mapped geometries and attribute information for offshore fault systems located in California State and Federal waters. The polyline shapefile and matching KML file have been compiled from previously published mapping where relatively dense, high-resolution marine geophysical data exist. The data are accompanied by a PDF containing citations for the compiled source data. Most of the marine geophysical data used for mapping have been processed, merged, and released by the USGS in maps, data releases, and journal publications in support of the California Seafloor Mapping Program and the U.S. West... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Geophysics, Marine Geology, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of California, U.S. Geological Survey, USGS, United States of America, earth characteristics, earthquake effects, earthquake prediction, earthquakes, geologic mapping, geologic processes, geological features, geology, geophysics, geoscientificInformation, geospatial datasets, hazards, hazards and disasters, marine geology, marine geophysics, natural agents of coastal change, oceanic lithosphere, oceanographic observations, oceans, scientific interpretation, sea-floor characteristics, seismic methods, Fewer tags MGL1111bathyutm.tif: Multibeam bathymetry data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in GeoTIFF format, UTM coordinate system This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S. Geological Survey (USGS) cruise MGL1111 aboard the R/V Marcus G. Langseth. Calibrated backscatter-intensity time-series data were adjusted for range-angle, beam pattern, and power-gain distortions. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, PCMSC, All tags... Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, U.S. Geological Survey, USGS, bathymetry, continental shelf, environment, geoscientificInformation, geospatial datasets, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, seismic methods, Fewer tags Survey lines along which seismic reflection data were collected in 2016 by the U.S. Geological Survey off Town Neck Beach Sandwich, Massachusetts during field activity 2016-017-FA Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, CMGP, Cape Cod Bay, Coastal and Marine Geology Program, Gulf of Maine, All tags... Knudsen 3202, Marine Geology, Massachusetts, North America, R/V Rafael, Sandwich, Sea floor, Town Neck Beach, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, beach, chirp, coast, field activity 2016-017-FA, geomorphology, geoscientificInformation, location, marine geology, marine geophysics, marine geophysics, navigation shotpoint, navigational data, oceans, sedimentary environments, seismic methods, seismic navigation, seismic reflection, seismic reflection methods, shore, sub-bottom profiling, subbottom, Fewer tags Transient Electromagnetics, Passive Seismic, and Borehole Electromagnetics, Gamma, and Nuclear Magnetic Resonance Methods to Characterize Glacial Sediments in East Falmouth, Massachusetts, Near Nantucket Sound In March 2016, the U.S. Geological Survey drilled a borehole, MA-FSW-750-0100, through the unconsolidated sediments and 1.5 m into the bedrock in East Falmouth, Massachusetts, to improve understanding of the glacial history and hydrologic properties of the Cape Cod aquifer. Prior to drilling, candidate sites were investigated using surface geophysical methods. Passive seismic horizontal-to-vertical spectral ratio (HVSR) methods were used to estimate the depth of the unconsolidated deposits over bedrock. Transient electromagnetic (TEM) surveys were conducted to characterize the lithology and salinity of formation water in the subsurface, which was used to plan the borehole completion. The specific conductance of... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Borehole Logging, Conductivity, East Falmouth, Electromagnetic Induction (EMI), Electromagnetic Surveying, All tags... Gamma-Ray Logging, Groundwater, Horizontal to Vertical Spectral Ratio Seismic (HVSR), Massachusetts, Nantucket Sound, Nuclear Magnetic Resonance (NMR), Passive Seismic, Resistivity, Seismic Methods, Time Domain, Transient Electromagnetics (TEM), USGS Science Data Catalog (SDC), environment, geoscientificInformation, Fewer tags Shotpoint navigation at a 500-shot interval for chirp seismic-reflection data collected in 2016 by the U.S. Geological Survey off Town Neck Beach Sandwich, Massachusetts during field activity 2016-017-FA Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, CMGP, Cape Cod Bay, Coastal and Marine Geology Program, Gulf of Maine, All tags... Knudsen 3202, Marine Geology, Massachusetts, North America, R/V Rafael, Sandwich, Sea floor, Town Neck Beach, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, beach, chirp, coast, field activity 2016-017-FA, geomorphology, geoscientificInformation, location, marine geology, marine geophysics, marine geophysics, navigation shotpoint, navigational data, oceans, sedimentary environments, seismic methods, seismic navigation, seismic reflection, seismic reflection methods, shore, sub-bottom profiling, subbottom, Fewer tags High-resolution seismic data acquired near seismic station CE.57213 in Fremont, California In September 2021, the U.S. Geological Survey acquired high-resolution P- and S-wave data near seismic station CE.57213 in Fremont, California, approximately 100 m east of the mapped trace of the Hayward Fault. We acquired the seismic data to evaluate the time-averaged shear-wave velocity in the upper 30 m (VS30) and to better understand ground-shaking near the station CE.57213. The seismic data were acquired using a linear array of SmartSolo 3-component nodal seismometers (nodes), which continuously recorded at 2000 samples per second (0.5-ms sampling rate). We deployed 60 nodes, spaced at 2-m increments, along a 180-m-long, northeast-southwest-trending linear array. We generated P-wave seismic sources (shots)... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alameda County, California, Geophysics, Northern California, Seismology, Seismology, All tags... USGS Science Data Catalog (SDC), earthquakes, hazards, seismic methods, seismic refraction methods, seismology, surface waves, Fewer tags