Accession Number:

ADA629728

Title:

Colored Dissolved Organic Matter in Sediments and Seagrass Beds and its Impact on Shallow Water Benthic Optical Properties

Descriptive Note:

Corporate Author:

OLD DOMINION UNIV NORFOLK VA DEPT OF OCEAN EARTH AND ATMOSPHERIC SCIENCES

Personal Author(s):

Report Date:

1999-09-30

Pagination or Media Count:

7.0

Abstract:

LONG TERM GOALS. The optical properties of shallow water coastal environments are a complex function of physical and biogeochemical processes occurring both in sediments and in the water column. Developing models of the optical properties of these environments requires further knowledge of the processes affecting light alteration and modification by biogeochemical reactions in the surficial sediments and at the sediment-water interface. The goal of this proposal is to examine one aspect of this problem, namely the impact of dissolved organic matter DOM in sediment pore waters on benthic optical properties. OBJECTIVES. In this proposal I am examining the processes affecting the production of colored and fluorescent dissolved organic matter CDOM in sediment pore waters, the mechanisms by which this material may be transported out of the sediments, and the impact of pore water CDOM on the optical properties of the shallow water benthos i.e., both the sediments, the sediment-water interface and the waters overlying the sediment, including the benthic boundary layer.

Subject Categories:

  • Organic Chemistry
  • Physical and Dynamic Oceanography
  • Hydrology, Limnology and Potamology
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE