HR: 0800h
AN: OS21C-1259    [Abstracts]
TI: Surface Vector Velocity Estimates and Gulf Stream Observations From the UMass Dual Beam Interferometer
AU: * Perkovic, D
EM: perkovic@mirsl.ecs.umass.edu
AF: University of Massachusetts, Microwave Remote Sensing Laboratory, 115 Holdsworth way, Knowles Engineering Building, Amherst, MA 01003
AU: Toporkov, J V
EM: toporkov@ccs.nrl.navy.mil
AF: Naval Research Laboratory, 4555 Overlook Ave, Washington DC, DC 20375
AU: Sletten, M A
EM: mark.sletten@nrl.navy.mil
AF: Naval Research Laboratory, 4555 Overlook Ave, Washington DC, DC 20375
AU: Farquharson, G
EM: gordon@mirsl.ecs.umass.edu
AF: University of Massachusetts, Microwave Remote Sensing Laboratory, 115 Holdsworth way, Knowles Engineering Building, Amherst, MA 01003
AU: Frasier, S J
EM: frasier@mirsl.ecs.umass.edu
AF: University of Massachusetts, Microwave Remote Sensing Laboratory, 115 Holdsworth way, Knowles Engineering Building, Amherst, MA 01003
AU: Marmorino, G O
EM: marmorino@ccs.nrl.navy.mil
AF: Naval Research Laboratory, 4555 Overlook Ave, Washington DC, DC 20375
AU: Judd, K P
EM: kjudd@ccs.nrl.navy.mil
AF: Naval Research Laboratory, 4555 Overlook Ave, Washington DC, DC 20375
AB: The Dual Beam Interferometer (DBI) developed by University of Massachusetts (UMass) consists of two C-band along-track interferometric synthetic aperture radars (ATI-SAR). The beams of this airborne system are squinted 20 degrees forward and aft of broadside allowing surface vector velocity estimation in a single aircraft pass. The instrument has been deployed several times over the period of last two years off coastal areas of Florida on a National Oceanic and Atmospheric Administration's (NOAA) WP-3D plane in collaboration with the Naval Research Laboratory (NRL). During 2002-2003 the instrument has undergone a series of tests and engineering flights with the August 2003 data producing the first interferogram. March 2004 flights were mainly focused on the western boundary of the Gulf Stream off Cape Canaveral, Florida. Simultaneous imagery of the sea-surface temperature field were obtained using NRL's Infrared (IR) camera, which was mounted in belly of the aircraft. Multiple passes over the Gulf Stream were made under a range of environmental conditions and viewing geometries relative to the Gulf Stream current and the wind. Additional flights were made over the barrier islands west of Ft. Meyers, Florida at times of near maximum ebb tidal flow. This paper will present initial estimates of the surface vector velocities for each area. The Gulf Stream velocity estimates show a current maximum of 1.5 m/s across the edge of the Stream which is consistent with estimates of the current from IR imagery using feature tracking. Estimates of the flow between the barrier islands are of the order of 1.5 to 2 m/s, which agrees well with the predicted tidal flow.
DE: 3360 Remote sensing
DE: 0659 Random media and rough surfaces
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting