Hare, J. A. NOAA National Ocean Service, jhare@hatteras.bea.nmfs.gov
Churchill, J. A. Woods Hole Oceanographic Institution,
Cowen, R. K. Rosensteil School of Marine and Atmospheric Sciences,
Berger, T. J. Science Applications International Corporation,
Glenn, S. M. Institute of Marine and Coastal Sciences,
Govoni, J. J. NOAA National Ocean Service,
Lee, T. N. Rosenstiel School of Marine and Atmospheric Sciences,

 
MECHANISMS OF LARVAL TRANSPORT FROM SOUTH TO NORTH OF CAPE HATTERAS: A LAGRANGIAN PERSPECTIVE
 
Previous studies of larval fish ages and distributions suggest that water from the South Atlantic Bight shelf (Cape Canaveral to Cape Hatteras) is routinely and rapidly transported northeastward to shelf edge of the Middle Atlantic Bight (Cape Hatteras to Cape Cod). This study examines the paths of satellite-tracked drifters, coupled with satellite-derived sea surface temperature imagery to assess the transport mechanisms responsible for observed larval distributions. The analyses support proposed transport pathways: 1) SAB shelf water is entrained into Gulf Stream flows and 2) moves northeastward into the Slope Sea, away from the shelf edge. 3) Warm-core ring streamers and occasionally Gulf Stream filaments move this water across the Slope Sea and to the MAB shelf edge. Using the Lagrangian data, distributions of transport times for the different components were generated and a randomization model was used to estimate transport times. These estimated times compared favorably to ages of larval fish proposed to be transported over this pathway.
 
Day: Thursday, Feb. 4
Time: 11:15 - 11:30am
Location: Eldorado Hotel
 
Code: SS26TH1115E