USGS Photographer at Work
Jay Prendergast adjusts the lens on a Robertson 48-inch, 4.5 ton camera. Installed in 1959, the camera was used for precise scale transformation of mapping separates and composites....
Location: Menlo Park, CA, USA

USGS Cartographer at Work
Bill Campbell operates an Electrical Survey Net Adjuster (ESNA). The ESNA was used for the adjustment of levels and traverse. ...
Location: Sacramento, CA, USA

USGS Photographer at Work
Working with a small copy camera....
Location: Menlo Park, CA, USA

Acoustic Doppler Current Profilers
USGS Hydrologic Instrumentation Facilities employee Jerry Gardner and contract employee Rodger Cook, prepare recently acquired Acoustic Doppler Profilers for distribution to USGS Water Science Centers....
Location: LA, USA

Radar Stage Sensor
USGS Hydrologic Instrumentation Facilities employee Robin Dailey examines a recently received radar stage sensor purchased with ARRA funds....
Location: LA, USA

Side-Looking Acoustic Doppler Current Profiler
USGS Hydrologic Instrumentation Facilities employee Rodger Cook examines a Side-Looking Acoustic Doppler Current Profiler purchased with ARRA funds....
Location: LA, USA

Pressure Transducer Unit
USGS Contract employee Kevin Hadley examines a pressure tranducer unit prior to subjecting it to quality assurance testing....
Location: LA, USA

Denver Display
Director's Display in Denver Colorado. It displays surveying equipment used by USGS field scientists. Some of the instruments included are engineer's levels, transits, hand-held transits, altimeters and microscopes. Object ID: USGS-DenverDisplay(1of2)...
Location: USA

Denver Display
Director's Display in Denver Colorado. It displays surveying equipment used by USGS field scientists. Some of the instruments included are engineer's levels, transits, hand-held transits, altimeters and microscopes. Object ID: USGS-DenverDisplay(2of2)...
Location: USA

Electromagnetic Survey
USGS hydrologist conducts a broadband electromagnetic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method for non-invasive assessment of earthen levee...
Location: New Orleans, LA, USA

Seismic Survey
USGS hydrologists conduct a seismic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method (no pictured here) for non-invasive assessment of earthen leve...
Location: New Orleans, LA, USA

Ground-penetrating Radar Survey (GPR)
USGS hydrologist conducts a ground-penetrating radar survey to investigate and characterize the shallow subsurface. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2006....
Location: Parris Island, SC, USA

Near-Surface Geophysics: Two-Dimensional Resistivity
USGS hydrologist conducts a two-dimensional (2D) resistivity survey to investigate and characterize the shallow subsurface. The survey was conducted as part of an applied research effort by the USGS Office of Groundwater Branch of Geophysics in 2006....
Location: Parris Island, SC, USA

Fiber Optic Temperature Sensing in Hydrology
USGS hydrologists deploy fiber-optic distributed temperature sensing equipment in Ashumet Pond, Mashpee, Massachusetts. Fiber-optic distributed temperature sensing is an emerging technology that has promise for characterizing estuary-aquifer interaction. The technology evaluation was conducted by th...
Location: Mashpee, MA, USA

Near-Surface Seismic Survey in the Bronx
USGS hydrologists prepare equipment for multi-channel analysis of surface waves (MASW) land seismic imaging survey. The geophones (in the yellow "land streamer") are pulled behind a vehicle. This relatively new system allows for inexpensive and rapid data acquisition. The survey was conducted a...
Location: Bronx, NY, USA