Optimized Enhanced Bioremediation through 4D Geophysical
The USGS Office of Ground Water, Branch of Geophysics (OGW BG) is collaborating on an applied research project to evaluate the use of new hydrogeophysical …
USGS OGW, BG: Borehole Radar Tomography Imaging of Fluid …
Methods of coupling cross-hole radar tomography surveys using saline tracer injections have been developed and tested at the USGS Mirror Lake fractured-rock field-research site in Grafton County, New Hampshire to delineate transmissive fracture zones and image fluid flow at field-scales. High concentration (20-50 g/L) NaCl tracers injected …
USGS OGW, BG: Characterizing fractures in a bedrock outcrop …
ABSTRACT. A study incorporating numerical modeling, physical modeling, and field surveys at the U.S. Geological Survey Fractured Rock Research Site at Mirror Lake, Grafton County, New Hampshire, was conducted to test the use of ground-penetrating radar (GPR) surface reflection methods to delineate fractures in heterogeneous bedrock.
USGS OGW, BG: Applied Research
Applied Geophysical Research. The Office of Ground Water, Branch of Geophysics (OGW BG) conducts applied geophysical research to support studies of the Nation's water resources. Research at the Branch is focused on the development and testing of new and emerging geophysical methods to image near-surface geologic …
USGS OGW, BG: Student Research Opportunities
The USGS Office of Groundwater, Branch of Geophysics (OGW BG) is seeking undergraduate and graduate students interested in emerging geophysical methods and novel applications of geophysical methods for groundwater investigations. OGW BG has opportunities for energetic and motivated students to participate in ongoing applied …
USGS OGW BG: Integrated Surface Geophysical Methods for
As part of its applied research initiatives, the USGS Office of Ground Water, Branch of Geophysics (OGW BG) assists in the planning and collection of surface geophysical data at the USGS Toxic Substances Hydrology Program's Naval Air Warfare Center (NAWC) research site in New Jersey, where volatile organic compounds have contaminated …
USGS OGW BG: Optimized Bioremediation through 4D …
The USGS Office of Ground Water, Branch of Geophysics (OGW BG) is collaborating on an applied research project to evaluate the use of new hydrogeophysical tools to remotely monitor and visualize subsurface bioremediation amendment emplacement and transport in near real-time. ... For more information on this project, please contact …
USGS OGW BG: From seismic resonance to sediment thickness …
From seismic resonance to sediment thickness–Ambient seismic noise analysis using the horizontal-to-vertical spectral ratio (HVSR) method. J.W. Lane, Jr. ([email protected]) …
Borehole Geophysical Monitoring of Amendment Emplacement …
Abstract. The U.S. Geological Survey (USGS) conducted a series of geophysical investigations to monitor a field-scale biostimulation pilot project at the Anoka County Riverfront Park (ACP), downgradient from the Naval Industrial Reserve Ordnance Plant, in Fridley, Minnesota.The pilot project was undertaken by the U.S. Naval Facilities …
USGS OGW, BG: Mission
Applied geophysical research at OGW BG focuses on the development and modification of surface- and borehole-geophysical characterization and monitoring methods, and the testing of newly developed and emerging geophysical technologies. This work is supported by the Office of …
USGS OGW, BG: Magnetic Resonance Sounding (MRS)
United States Geological Survey, Office of Ground Water, Branch of Geophysics: Proton Magnetic Resonance Sounding (MRS) (nuclear magnetic resonance) geophysical method overview.
USGS OGW, BG: Summary of Selected Borehole Geophysical Logging Methods
Temperature of borehole fluid; differential temperature (rate of change of the temperature) is calculated. 1. 1. 1. Heat-pulse, electromagnetic, and spinner flowmeter. Map fluid flow regime and transmissive fractures in the borehole. Direction and magnitude of vertical flow within the borehole. 3. 3.
Geoelectrical Measurement of Multi-scale Mass-transfer Parameters
Overview. The USGS Office of Groundwater, Branch of Geophysics (OGW BG) has collaborated on multi-year applied research to develop and demonstrate geophysical strategies to measure mass-transfer parameters over a range of spatial scales and to provide geophysical estimates of mass-transfer parameters for Hanford 300 Area …
USGS OGW BG: Monitoring Rate-Limited Mass Transfer Using …
Overview. As part of its applied research initiatives, the USGS Office of Ground Water, Branch of Geophysics (OGW BG) investigated the application of geophysical measurements to help verify and measure rate-limited mass transfer (RLMT), which is thought to be an important control on solute transport in heterogeneous geologic media.
Fiber-Optic Distributed Temperature Sensing in Waquoit Bay
In 2006 the USGS Office of Groundwater, Branch of Geophysics (OGW BG) conducted a technology demonstration and evaluation project in Waquoit Bay, East Falmouth, …
USGS OGW BG: From seismic resonance to sediment thickness …
C.D. Johnson ([email protected]) OGW Branch of Geophysics, U.S. Geological Survey, Storrs, CT, USA. Abstract. Analysis of ambient seismic noise using the horizontal-to-vertical spectral ratio (HVSR) method increasingly is used to delineate unconsolidated sediment thickness and bedrock surface topography. At sites with strong …
USGS
As part of OGW Branch of Geophysics (BG) geophysical monitoring research through the USGS Toxic Substances Hydrology Program, electrical-resistivity tomography (ERT) surveys of saline tracer tests in porous media were conducted on the Massachusetts Military Reservation (MMR), Cape Cod, Massachusetts.
USGS OGW, BG: GROUND-PENETRATING RADAR METHODS USED …
Ground-penetrating radar (GPR) has been used by the USGS in hydrologic, geologic, environmental, and bridge-scour studies by floating antennas on water or mounting antennas in boats. GPR methods were developed to measure and monitor remotely the cross-sectional area of rivers by suspending a 100-megahertz (MHz) radar antenna from …
Contaminant Fate and Transport Capabilities @ MD-DE-DC …
By Maryland-Delaware-D.C. Water Science Center June 28, 2020. Contaminant Fate and Transport. effective solubility assessment for organic analytes in …
USGS OGW BG: Cross-borehole flow tests and insights into …
Paper: Cross-borehole flow tests and insights into hydraulic connections in fractured mudstone and sandstone at VOC-contaminated bedrock research site in west-central New Jersey (USGS - U.S. Geological Survey Office of Ground Water, Branch of …
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USGS OGW BG: Applied Toxic Substances Hydrology Research
This research was conducted by Fred Day- (USGS OGW BG) and Carole D. Johnson (USGS OGW BG), with assistance from Fred Paillet and OGW BG staff. Recent Publications: Day-, F.D., and Lane, J.W., Jr., 2004, Assessing the resolution-dependent utility of tomograms for geostatistics : Geophysical Research Letters, v. 31, …