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Filter Total Items: 148
Date published: February 24, 2019
Status: Active

Handheld Thermal Imaging Cameras for Groundwater/Surface-Water Interaction Studies

USGS scientists are using high-resolution handheld thermal imaging cameras in groundwater/surface-water interaction studies and other investigations. These cameras are used to quickly locate and characterize thermal anomalies in streams, lakes, and adjacent structures. Variations in temperature can be used to track the heat carried by flowing water, such groundwater discharge into a stream....

Contacts: Martin A Briggs
Attribution: Water Resources
Date published: February 24, 2019
Status: Active

What does groundwater have to do with ice in Alaska?

USGS scientists are working alongside university researchers in Alaska to understand how groundwater and permafrost conditions change over time due to seasonal variations and climate change. Changes in permafrost can pose a threat to built infrastructure (like roads, homes, and pipelines) and to valued ecological resources that provide important habitats for wildlife.

Contacts: Martin A Briggs
Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Fiber-Optic Distributed Temperature Sensing Technology Demonstration and Evaluation Project

Fiber-optic distributed temperature sensing (FO-DTS) is an emerging technology that has promise for characterizing estuary-aquifer and stream-aquifer interaction and for identifying transmissive fractures in bedrock boreholes.

Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Borehole Nuclear Magnetic Resonance (NMR)

Borehole nuclear magnetic resonance (NMR) is an emerging geophysical method being applied to hydrogeology investigations.

Contacts: Carole Johnson
Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Spectral Gamma Borehole Logging

Spectral gamma borehole geophysical methods measure natural-gamma energy spectra, which are caused by the decay of uranium, thorium, potassium-40, and anthropogenic radioactive isotopes. Spectral gamma data can be used to identify and quantify the amount of uranium, thorium, and potassium-40 isotopes detected in boreholes.

Contacts: Carole Johnson
Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Geophysics for USGS Groundwater/Surface Water Interaction Studies

Understanding the interaction of groundwater and surface water is essential to water managers and hydrologists for the development of effective water-resource policy, protection, and management. The USGS conducts applied research to evaluate the use of new or emerging hydrogeophysical tools and methods to improve our understanding of groundwater/surface-water exchange.

Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Water Chemistry Data for Selected Springs, Geysers, and Streams in Yellowstone National Park, Wyoming, Beginning 2009

Results of water analyses conducted on numerous thermal and non-thermal features in Yellowstone National Park beginning in 2009. Water samples were collected and analyzed as part of research investigations on arsenic, iron, nitrogen, and sulfur redox species in hot springs and overflow drainages; the occurrence and distribution of dissolved mercury; and general hydrogeochemistry of hot springs...

Attribution: Water Resources
Date published: February 24, 2019
Status: Active

Groundwater-Level Response to Virginia Earthquake, August 23, 2011

A magnitude 5.8 (Mw) earthquake occurred at 1:51 pm EDT (17:51 UTC) on August 23, 2011, at a depth of about 3.7 miles (6 kilometers) beneath the town of Mineral, Virginia, located approximately 27 miles (45 kilometers) east of Charlottesville. The event is among the largest earthquakes recorded in the eastern United States.

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

The Story of the USGS Research Vessel (R/V) Polaris

For the past 50 years, the USGS has been conducting research in the San Francisco Bay and Delta, California and beyond. This research would not have been possible without the Research Vessel (R/V) Polaris. Many scientists who have been fortunate to work on the Polaris have come and gone, but the Polaris sailed from the South San Francisco Bay continuously from 1968...

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Pore-Water Profiler, US Patent 8,051,727

Patent for a pore-water profiler and method for sampling pore water. The pore-water profiler includes a sample intake probe that receives the fluid to be sampled. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Sequential, Time-Integrated Collector of Precipitation, Ground Water, and Surface Water for Analysis of Isotopes; US Patent 7,687,028

Patent for a sequential, time-integrated collector having an electronic controller that actuates either of two electrically-actuated valves, each connected to a water reservoir. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Sorbant Sequestration and Removal of Toxic Metal Ions, US Patent 6,896,813

A matrix for water decontamination has an amended sorbant cellulose substrate with an iron (ferric) oxyhydroxide component and a component to sorb dissolved organic compounds retained by the cellulose substrate. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources