Evaluating Geophysical Equipment & Methods
USGS hydrologists monitor data collection during a geophysical survey using the horizontal-to-vertical ambient-noise seismic method. This method can be used to estimate unconsolidated sediment thickness and map the bedrock surface as part of groundwater investigations. The survey was conducted as pa...
Location: RI, USA

Using GPS in the Field
USGS hydrologist collects location data using GPS during a near-surface geophysics survey. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2007....
Location: CA, USA

Near-Surface Gravity Survey
A USGS hydrologist prepares equipment to conduct a gravity survey to evaluate small variations in the earth's gravity field. The USGS Office of Groundwater Branch of Geophysics develops and tests new tools and field methods to support USGS analysis of groundwater flow systems....
Location: CA, USA

Continous Seismic Profiling
The USGS collaborated with cooperator U.S. Fish & Wildlife Service to conduct continuous seismic-reflection profiling in the Havasu National Wildlife Refuge. The survey was conducted as part of an applied research and technology transfer effort by the USGS Office of Groundwater Branch of Geophysics ...
Location: CA, USA

USGS Training on Borehole Geophysical Logging
A USGS hydrologist holds an electromagnetic induction borehole logging tool while the tool is calibrated. The hydrologist was participating in a USGS class on how to use electromagnetic induction geophysical methods for groundwater investigations, conducted by the USGS Office of Groundwater Branch ...
Location: FL, USA

Electromagnetic Survey
A USGS hydrologist conducts a near-surface electromagnetic induction survey to characterize the shallow earth. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics at Camp Rell, Connecticut, in 2008....
Location: Camp Rell, CT, USA

Deploying Fishing Nets
USGS scientists on USGS Research Vessel Musky II, deploying nets for fishing on Lake Erie....
Location: USA

Processing Fish Samples
USGS scientists processing fish samples on the USGS Research Vessel Kaho....
Location: USA

Yellowstone Streamgage
Tantalus Creek in Yellowstone National Park: The gage is near Geyser Basin and the buffalo like to stand in the warm water. At the time of the measurement the air temperature was near 10 F....
Location: USA

Solar-Powered Streamgage
Solar powered streamgage to transmit real-time data at Grinnell Creek at Grinnell Glacier, Glacier National Park. ...
Location: MT, USA

Field Trip to the Congo
USGS scientist John Shelton using high-tech hydroacoustic equipment to measure the depth and velocity of the Congo River. ...
Location: USA

USGS Scientist at Work
Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System. ...
Location: MI, USA

USGS Scientist at Work
A USGS scientist operates an X-ray diffraction machine at the National Center in Reston, VA. ...
Location: Reston, VA, USA

USGS Scientist at Work
Erika Lentz examines Pennsylvanian coal samples in West Virginia. ...
Location: WV, USA

USGS Scientist at Work
Seth Book examines ground-water discharge along the shorline of Hood Canal, WA. ...
Location: WA, USA