Groundwater Discharge to Delmarva Coastal Bays: CMG, WRD, and Surface Processes Hoverprobe Team Conduct First Open-Water Surveys
Fresh interstitial waters were found a few meters below the bay floor from 120 to ~400 m from shore. A marsh core was also obtained from Assateague Island, MD.
Participants were Frank
Manheim and Jerome Palmer (student assistant, Reston); John Bratton (Woods Hole), Dave Krantz (WRD
Dover, DE), Dan Phelan (WRD Baltimore), and Mike Herder (contract driller, Eastern Region Surface
Processes Team). Bill Ullman (University of Delaware, Lewes) cooperated with nutrient analyses. Visiting
the activities were Bob Shedlock (WRD Baltimore), Kathy Wazniak (Maryland Department of Natural
Resources), and Brian Sturges (National Park Service, Assateague Island).
Hoverprobe is not only able to move on land and water, but also incorporates a highly effective vibra-drilling tool that can recover nearly undisturbed sediments to a depth of more than 15 m. Hoverprobe also accommodates a screened well-point pumping system able to recover large amounts of formation fluids. Drawing in part on the success of the previous resistivity surveys and coring results, a groundwater proposal has been submitted by WRD (Dover and Baltimore) to the Office of Ground Water for larger-scale groundwater studies in the Spring of 2001.
in this issue: Delmarva Coastal BaysHoverprobe