Chief Branch of Geophysics
Office of the Chief Operating Officer
Email:
jwlane@usgs.gov
Office Phone:
860-487-7402
Fax:
860-487-8802
ORCID:
0000-0002-3558-243X
Location
Coventry Cottage - Office
11 Sherman Place
Unit 5015
Storrs
, CT
06269
US
Supervisor:
Robert L Joseph
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This data release contains motorboat-towed floating transient electromagnetic data collected from the Columbia River near Hanford WA. Data were collected using a ~16 foot (4.9 meters) outboard motorboat during two field campaigns: July 2021 and April 2022. In total, several hundred linear kilometers of data were collected from a reach of the Columbia that extends from approximately Vernita Bridge to Richland, WA with some additional data collected in the Horn area north of White Bluffs in April 2022. An Aarhus Geoinstruments FloaTEM system was used to collect these data. The depth of investigation of the FloaTEM system is variable but ranged from approximately 50 to 100 meters. Previously collected high-resolution...
Categories: Data;
Tags: Aquifer Mapping,
Columbia River,
Geophysics,
Hanford Reach,
Hydrogeologic Characterization, All tags...
State of Washington,
USGS Science Data Catalog (SDC),
electromagnetic surveying,
geophysics,
hydrology,
surface water (non-marine), Fewer tags
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An irrigation monitoring experiment was performed in Haddam Meadows State Park, Connecticut, on July 16, 2019. Prior to this experiment, ground penetrating radar (GPR), frequency domain electromagnetics (FDEM), and electrical resistivity tomography (ERT) geophysical data were collected over a 20 meter by 10-meter grid to provide baseline information. A vertical soil moisture probe was installed in the center of this area that recorded volumetric water content, temperature, and electrical conductivity at 9 discrete depths down to 1 meter below land surface. Over the next 8 hours, 5,300 liters of irrigation water (with specific conductance of 1,000 microSiemens per centimeter) was sprayed as evenly as practical over...
Tags: Ambient Monitoring,
Connecticut,
Geophysics,
Geophysics,
Geophysics, All tags...
Haddam Meadows,
Hydrology,
Real-time Monitoring,
Soil Sciences,
Stratigraphy,
Surface Geophysics,
Surface Geophysics,
USGS Science Data Catalog (SDC),
USGS:626b151cd34e76103cd18517,
Water Resources,
Water Resources,
boundaries,
electromagnetic surveying,
electromagnetic surveying,
environment,
geophysics,
geophysics,
geoscientificInformation,
geoscientificInformation,
groundwater,
hydrogeology, Fewer tags
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The electrical conductivity of the earth is used to help infer lithological and pore fluid properties. Various geophysical methods can provide estimates of the distribution of below ground electrical conductivity, with each method having certain limitations. This data release presents raw and processed results from hand-caried frequency domain electromagnetic induction imaging (EMI) data collected from June 27-28 along Blacktail Creek near Williston, North Dakota. Data were primarily collected by walking in the creek or along the riparian zones with the GEM-2 instrument (Geophex, Ltd.) at approximately 0.5 m off the ground in horizontal coplanar (ski flat) mode.
Tags: Groundwater,
North Dakota,
Surface Water,
Williston,
electromagnetic surveying, All tags...
environment,
geophysics,
geoscientific information,
hydrogeology,
hydrology,
inland waters, Fewer tags
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In June 2018, 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, MO. Frequency domain electromagnetic (FDEM) induction data were collected along the edge of the water. The antenna was placed on a plastic frame and held approximately 1 m above the water surface. The antenna was mounted on a raft that was towed behind a canoe. All unprocessed and processed data including the in-phase and quadrature components in parts per million, electrical conductivity (EC) in milliSiemens per meter (mS/m), and magnetic susceptibility in...
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In June 2018, U.S. Geological Survey 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, MO. Shear-wave (Vs) refraction surveys were collected to measure the shear-wave velocity of the subsurface, which can be used for estimating the depth to rock with the horizontal-to-vertical spectral ratio (HVSR) passive seismic reconnaissance method. A secondary objective was to determine the depth of interfaces for comparison to the resistivity surveys and frequency domain electromagnetic profiles.
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