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Title: Transport and fate of river discharge on the continental shelf of the Southeastern US

Abstract

The authors have analyzed 8 years of wind and salinity data from a frontal zone in a region of the inner continental shelf off the southeastern United State. The changes in low-salinity water stored in the frontal zone have been parameterized by analyzing the monthly rate of change in freshwater content. When the rate of change in freshwater content was negative, the authors interpreted this as a loss of low-salinity water from the frontal zone. When this parameter was compared with seasonally averaged alongshore wind stress, the rate of loss was independent of the alongshore wind stress magnitude until threshold of about 0.1 dyne cm/sup -2/ was reached. Above the threshold there was a clear relationship between northward alongshore wind stress and rate of loss of freshwater from the inner shelf. Experimental evidence suggests that horizontal currents in the inner-shelf frontal zone have cyclonic shear with increasing depth. When wind stress is northward and offshore, near-shore low-salinity water is transported offshore by Ekman transport while near-bottom high-salinity water is transported shoreward.

Authors:
;
Publication Date:
Research Org.:
Skidaway Institute of Oceanography, Savannah, GA
OSTI Identifier:
5314806
DOE Contract Number:  
AS09-76EV00889; AS09-80EV10331; AS09-76EV00901
Resource Type:
Journal Article
Journal Name:
J. Geophys. Res.; (United States)
Additional Journal Information:
Journal Volume: 88:C8
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; SODIUM CHLORIDES; ENVIRONMENTAL TRANSPORT; CONTINENTAL SHELF; FRESH WATER; MONTHLY VARIATIONS; WATER CURRENTS; WIND; ALKALI METAL COMPOUNDS; CHLORIDES; CHLORINE COMPOUNDS; CONTINENTAL MARGIN; CURRENTS; HALIDES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; MASS TRANSFER; OXYGEN COMPOUNDS; SODIUM COMPOUNDS; VARIATIONS; WATER; 520100* - Environment, Aquatic- Basic Studies- (-1989)

Citation Formats

Blanton, J O, and Atkinson, L P. Transport and fate of river discharge on the continental shelf of the Southeastern US. United States: N. p., 1984. Web.
Blanton, J O, & Atkinson, L P. Transport and fate of river discharge on the continental shelf of the Southeastern US. United States.
Blanton, J O, and Atkinson, L P. Wed . "Transport and fate of river discharge on the continental shelf of the Southeastern US". United States.
@article{osti_5314806,
title = {Transport and fate of river discharge on the continental shelf of the Southeastern US},
author = {Blanton, J O and Atkinson, L P},
abstractNote = {The authors have analyzed 8 years of wind and salinity data from a frontal zone in a region of the inner continental shelf off the southeastern United State. The changes in low-salinity water stored in the frontal zone have been parameterized by analyzing the monthly rate of change in freshwater content. When the rate of change in freshwater content was negative, the authors interpreted this as a loss of low-salinity water from the frontal zone. When this parameter was compared with seasonally averaged alongshore wind stress, the rate of loss was independent of the alongshore wind stress magnitude until threshold of about 0.1 dyne cm/sup -2/ was reached. Above the threshold there was a clear relationship between northward alongshore wind stress and rate of loss of freshwater from the inner shelf. Experimental evidence suggests that horizontal currents in the inner-shelf frontal zone have cyclonic shear with increasing depth. When wind stress is northward and offshore, near-shore low-salinity water is transported offshore by Ekman transport while near-bottom high-salinity water is transported shoreward.},
doi = {},
journal = {J. Geophys. Res.; (United States)},
number = ,
volume = 88:C8,
place = {United States},
year = {1984},
month = {5}
}