Kohut, J. Rutgers University, kohut@arctic.rutgers.edu
Barrick, D. CODAR Ocean Sensors, Ltd., COSDon@aol.com
Chant, R. Rutgers University, chant@ahab.rutgers.edu
Glenn, S. M. Rutgers University, glenn@arctic.rutgers.edu

 
USE OF A SEASONDE HF RADAR FOR ADAPTIVE SAMPLING AT THE LONG-TERM ECOSYSTEM OBSERVATORY
 
A Codar Ocean Sensors SeaSonde HF surface-current mapping system controlled with new real-time processing and display software was deployed on the New Jersey coast for the entire summer of 1998. The SeaSonde's ability to cover the region around LEO-15 was determined by studying the tidal ellipses generated during the initial month of operation, resulting in a coverage domain nearly overlapping that obtained with an Ocean Surface Current Radar (OSCR) system in 1996. Every hour during the July upwelling experiment, radial vectors from two SeaSonde transmit/receive antennas were transmitted to a central site, combined into vector current fields, detided, filtered to remove inertial currents, and displayed on the World Wide Web in near real-time. The surface current fields, combined with satellite-derived sea surface temperatures, where used for adaptive sampling mission planning and assimilation. Using the near real-time current maps, both survey vessels and autonomous underwater vehicles were routed through the center of the 6 km diameter cyclonic eddy that typically develops within the recurrent upwelling centers, providing the first 3-dimensional view of the density and velocity structure of an upwelling eddy. Derived quantities (vorticity and divergence) provided useful guidance for biological sampling, successfully identifying regions of surface convergence and abundant biological organisms.
 
Day: Friday, Feb. 5
Time: 09:00 - 09:15am
Location: Hilton of Santa Fe
 
Code: SS12FR0900H