Determination of near-surface velocity fields in the CTZ using combined altimetric and inverse modelling techniques
Taggart, Douglas Michael
Ramp, Steven R.
MetadataShow full item record
An inverse model involving AVHRR imagery and the heat equation with dynamical constraints on the divergence, kinetic energy and vorticity of the solutions was used by Kelly (1989) to produce velocity fields that were in good agreement with Acoustic Doppler Current Profiles (ADCP) data. Dynamic heights derived from GEOSAT radar altimeter data have also been used to determine near-surface geostrophic currents. Synthetic GEOSAT-derived velocity data was generated ADCP data collected as part of the Coastal Transition Zone (CTZ) Field Program. The inverse model was run with AVHRR imagery that was coincident to the CTZ Field Program ACDP data and the synthetic velocity data was added as an additional constraint on the model's solution. The resulting velocity solutions were much improved over those given by the inverse model alone. Refinement of this method involving a combination of different data sources should improve efforts to determine near-surface velocities of the ocean entirely by remote means.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Rosenthal, Richard E. (Monterey, California. Naval Postgraduate School, 1985-01); NPS55-85-001A basis for a pure network flow problem always exhibits special structure, whose exploitation has led to the development of extremely efficient network optimization software. The backbone of these programs is a data structure ...
Null, James Mark. (Monterey, California. Naval Postgraduate School, 1995-03);In many strategic shallow water areas the geoacoustic properties of the sub-bottom are largely unknown. In this thesis it is demonstrated that inverse theory and measured data from a single hydrophone can be used to ...
Kuchler, Ryan J. (Monterey California. Naval Postgraduate School, 2002-06);In this thesis, underwater acoustic communications signal processing techniques, which are used to equalize the distortional effects associated with the ocean as a communications channel, are investigated for a shallow ...