NDLI: Issues surrounding surfactant effects upon radar imagery of convergent ocean surface flows with application to the Hi-Res I rip feature

Content Provider	IEEE Xplore Digital Library
Author	Cooper, A.L. Chubb, S.R. Kaiser, J.A.C.
Copyright Year	1996
Description	Author affiliation: Div. of Remote Sensing, Naval Res. Lab., Washington, DC, USA (Cooper, A.L.; Chubb, S.R.; Kaiser, J.A.C.)
Abstract	X-band radar signatures of a current rip convergence, resulting from denser Gulf Stream fluid interacting with fresh coastal shelf water near Cape Hatteras, were observed during the First High Resolution (Hi-Res I) experiment. These signatures, which appeared as intense (/spl sim/10 dB) enhancements in radar cross section (RCS) in the form of meandering linear segments, were accompanied by secondary parallel meandering segments of reduced (/spl sim/5-10 dB) RCS on the shelf water side. The effects of wave-current interaction scale with the surface velocity (u) while the effects of surfactants scale as the ratio of surface current to phase velocity (u/c). Unlike internal waves which 'graze' upon the ambient surface film material, current rips 'herd' the ambient surface film material to a convergence point where u/c=1. The latter features can induce singular behaviour for a monomolecular surface film. A number of fundamental issues need to be resolved including: continuity of the surface film in regions of wave breaking; buckling of the monomolecular film; and subduction of the surfactant at the frontal boundary. These issues are highlighted through application to the Hi-Res I rip feature using a simplified one-dimensional model of the feature as well as the surface manifestation of currents derived from the associated depth-dependent structure.
Starting Page	911
Ending Page	913
File Size	323861
Page Count	3
File Format	PDF
ISBN	0780330684
DOI	10.1109/IGARSS.1996.516518
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar imaging Image converters Oceans Sea surface Surface waves Radar remote sensing Convergence Damping Radar cross section Remote sensing
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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