USGS - science for a changing world

USGS Groundwater Information: Branch of Geophysics

*  Home *  Resources *  Research *  Publications *  About *  Contact Us *  Groundwater Information

Continuous-resistivity profiling for coastal ground-water investigations: Three case studies

Marcel Belaval, Boston College, Chestnut Hill, MA
John W. Lane, U.S. Geological Survey, Storrs, CT
David P. Lesmes, Boston College, Chestnut Hill, MA
Gail C. Kineke, Boston College, Chestnut Hill, MA

Abstract

Continuous-resistivity profiling (CRP) was used at three sites to investigate submarine groundwater discharge (SGD) and to delineate the subsurface saltwater/freshwater interface. At the first site, in Georgetown, South Carolina, CRP was used to locate possible areas of SGD in the Winyah Bay estuary. The data show evidence of SGD in the Pee Dee River, feeding into Winyah Bay, at approximately the location of the forest/marsh boundary. In Waquoit Bay, Massachusetts, CRP was used to further map the extent of SGD already measured by sea floor seepage meters and to delineate the subsurface saltwater/freshwater boundary. The data show evidence for a focused groundwater plume beneath the bay that may extend 350 meters (m) out from the shore. Finally, CRP was used in Orleans, Massachusetts, to verify a groundwater model prediction of freshwater-saturated sediments underlying an area of Cape Cod Bay, just west of Rock Harbor. The data support the prediction of freshwater-saturated sediments beneath the bay. Results from all three sites show the value of CRP in coastal groundwater investigations.


Download

Download a complete PDF version of this document (1.7MB)

Note: Download free Adobe Acrobat Reader to view PDF files at the Adobe web site.
Visit http://access.adobe.com for free tools that allow visually impaired users to read PDF files.


Final copy as submitted to Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) for publication as: Belaval, M., Lane, J.W., Jr., Lesmes, D.P., and Kineke, G.C. 2003, Continuous-resistivity profiling for coastal groundwater investigations: three case studies, in Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP), April 6-10, 2003, San Antonio, Texas, Proceedings: Denver, Colorado, Environmental and Engineering Geophysical Society, CD-ROM, 14 p.

USGS Home Water
Climate and Land Use Change Core Science Systems Ecosystems Energy and Minerals Environmental Health Natural Hazards

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/ogw/bgas/publications/SAGEEP03_Belaval/index.html
Page Contact Information: Contact the OGW Branch of Geophysics
Page Last Modified: Thursday, 03-Jan-2013 20:04:25 EST