Seasonal fluctuations in sea level on the South Carolina shelf and their relationship to the Gulf Stream

Journal of Geophysical Research C: Oceans
By:  and 

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Abstract

Near-bottom pressure measurements obtained over a 9-month period in 1978 on the outer continental shelf off South Carolina document that sea level rose 35 to 50 cm between July and October. Records of coastal sea level showed a similar rise. When the pressure and coastal sea level records were corrected for the effects of wind stress and temperature, the largest portion of the rise in the two variables remained. The amplitude of the change in residual sea level was largest at the shelf break, 28 cm, and decayed to 22 cm at the coast. The relatively small magnitude of the decay suggests that alongshelf pressure gradients imposed at the shelf break have minimum alongshelf wavelengths of 2000 km. The changes in residual sea level were seasonal and associated with seasonal changes in the transport of the Gulf Stream. The 3 years of residual sea level records examined here indicate that the amplitude of a typical decrease in transport of the Gulf Stream off South Carolina between July and October has a strong interannual variability. The change in transport can be 50% lower to over 100% higher than the historical average. The residual sea level records also suggest that a change in transport of the Gulf Stream is not strongly related to the onshore/offshore position of the Gulf Stream.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Seasonal fluctuations in sea level on the South Carolina shelf and their relationship to the Gulf Stream
Series title Journal of Geophysical Research C: Oceans
DOI 10.1029/92JC00811
Volume 97
Issue C6
Year Published 1992
Language English
Publisher American Geophysical Union
Publisher location Richmond, VA
Contributing office(s) Woods Hole Coastal and Marine Science Center
Description 9 p.
First page 9521
Last page 9529
Country United States
State South Carolina
Online Only (Y/N) N
Additional Online Files (Y/N) N