Accession Number:

ADA609910

Title:

Investigating Contaminant Inputs via Submarine Groundwater Discharge to Coastal Waters Using Radium Isotopes

Descriptive Note:

Annual rept.

Corporate Author:

WOODS HOLE OCEANOGRAPHIC INST MA DEPT OF MARINE CHEMISTRY AND GEOCHEMISTRY

Report Date:

2000-09-30

Pagination or Media Count:

6.0

Abstract:

Our long-term goal is to determine if submarine groundwater discharge SGWD is an important mechanism for delivering contaminants i.e. heavy metals, organics to harbors. We plan to accomplish this goal using a suite of naturally-occurring radium isotopes as tracers of SGWD and the dispersion of contaminants from the embayment BuesselerWHOI. In addition, we plan to develop a comprehensive hydrological model HarveyMIT to determine the importance of SGWD in the transport of pollutants to coastal harbors. We will apply recently developed analytical techniques for measuring radium 223Ra, 224Ra delayed coincidence counting 226Ra, 228Ra low-background gamma counting in the study of contaminant fluxes via SGWD. Recent studies suggest that groundwater may be important in the mass balance of many elements in nearshore environments and cannot be ignored in the accurate prediction of the fate of contaminants originating in marine sediments and pore waters. Even if SGWD flows are modest, pollutant concentrations in groundwater may be sufficiently high for SGWD to have an important impact on the source and fate of pollutants in coastal harbors and estuaries.

Subject Categories:

  • Inorganic Chemistry
  • Hydrology, Limnology and Potamology
  • Metallurgy and Metallography
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE