Martin A Briggs

04_Field measurements of lakebed groundwater temperatures by using a thermocouple probe, July 2008, August 2014, and August 2015, Falmouth, MA

This dataset contains field measurements of lakebed groundwater temperatures collected during three surveys in July 2008, August 2014, and August 2015, by using a handheld thermocouple probe and GPS at a permeable reactive barrier at Ashumet Pond, Falmouth, MA. The comma-separated file includes unique site identifiers, locations of measurement points, temperatures, dates, and types of measurement (groundwater, surface water, or control). Also included are ESRI raster datasets for each measurement date for (1) interpolated lakebed groundwater temperatures, and (2) interpolated lakebed groundwater temperatures normalized to the surface water temperature at the time of measurement. This data release is provided...

Categories: Data; Tags: Cape Cod, Falmouth, Massachusetts, environment, groundwater, All tags... groundwater and surface-water interaction, water temperature, Fewer tags

The temperature and surface geophysical data contained in this release have primarily been collected to support groundwater/surface water methods development, and to characterize the hydrogeological controls on native brook trout habitat. All data have been collected since 2010 along the Quashnet River corridor located on Cape Cod, MA, USA. Cape Cod is a peninsula in southeastern coastal Massachusetts, USA, composed primarily of highly permeable unconsolidated glacial moraine and outwash deposits. The largest of the Cape Cod sole-source aquifers occupies a western (landward) section of the peninsula, and is incised by several linear valleys that drain groundwater south to the Atlantic Ocean via baseflow-dominated...

Categories: Data Release - Revised; Tags: Falmouth/Mashpee, Groundwater, InlandWaters, Massachusetts, Quashnet River, All tags... Surface Water, Thermal, USGS Science Data Catalog (SDC), environment, geophysics, geophysics, geoscientificInformation, groundwater, hydrogeology, hydrology, inlandWaters, measurement, seepage, temperature, Fewer tags

Waterborne Gradient Self-potential, Temperature, and Conductivity Logging of the Upper part of the Delaware River between Hancock and Port Jervis, New York, June–July 2021

This data release contains waterborne gradient self-potential (SP), surface-water temperature, surface-water conductivity and specific conductance, and surface-water nitrate concentration data measured continuously in the upper part of the Delaware River along approximately 123 kilometers (km) between Hancock and Port Jervis, New York. All of the data were measured from a kayak between June 27 and July 2, 2021. Gradient self-potential data were measured along five survey segments that varied in length between 13.1 and 31.6 km. The first segment began at Hancock, N.Y. on the east branch of the Delaware River, progressed into the main stem, and ended about 13.1 river-km downstream in Lordville, N.Y. at U.S. Geological...

Categories: Data; Tags: Barryville, New York, Callicoon, New York, Geophysical logging, Geophysics, Geophysics, All tags... Gradient self-potential, Hancock, New York, Hydrology, Hydrology, Lordville, New York, Narrowsburg, New York, New York, Port Jervis, New York, Rivers, Self-potential, Surface-water and groundwater exchanges, Surface-water conductivity, Surface-water temperature, Tusten, New York, USGS Science Data Catalog (SDC), Upper Delaware River, Upper part of the Delaware River, Water Resources, Fewer tags

Floating Transient Electromagnetic Survey Data from the Columbia River near Hanford, WA

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

Ground penetrating radar (GPR) data collected in a mine-impacted wetland near Silverton, Colorado in September 2019

This child item contains ground penetrating radar (GPR) data collected over a small alpine wetland between Mogul Mine and Cement Creek located near Silverton, Colorado. Mine-impacted water is transported to Cement Creek via surface channels and groundwater through this wetland. The GPR method transmits radar pulses into the ground and measures the returned amplitude from these pulses over time. Variations in subsurface electromagnetic (EM) properties (dielectric permittivity, electrical conductivity, and magnetic susceptibility) affect the timing and amplitude of returned radar energy. For example, variation in water or mineral content are physical properties that often influence the EM properties that are observed...

Tags: California Gulch, Cement Creek, Colorado, Focused Assessments, Geophysics, All tags... Groundwater, InlandWaters, Investigation and Monitoring Support, Silverton, Surface Water, environment, geophysics, geoscientificInformation, ground penetrating radar, hydrology, wetland functions, Fewer tags