Title :
Can internal waves be used to detect organic films from space?
Author :
da Silva, J.C.B. ; Ermakov, S.A. ; Robinson, L.S.
Author_Institution :
Dept. of Oceanogr., Southampton Oceanogr. Centre, UK
Abstract :
A method for remote determination of the presence of surfactants in the sea surface microlayer based on observations of internal wave (IW) signatures on satellite radar imagery is proposed. It is shown that small variations of surfactant concentration that occur on shelf zones caused by tidal flow can modulate the surface signatures of IWs, producing different signatures according to the local film concentration and wind speed. An analysis and classification of ERS SAR signatures of short-period IWs on the Iberian shelf is presented
Keywords :
backscatter; oceanographic techniques; radar cross-sections; remote sensing by radar; spaceborne radar; synthetic aperture radar; Iberian shelf; North Atlantic; SAR signature; chemical composition; internal wave; measurement technique; ocean; organic compound; organic film; radar imagery; radar remote sensing; satellite remote sensing; sea surface; sea surface microlayer; shelf zone; spaceborne radar; surface film; surface signature; surfactant; Hydrodynamics; Ocean temperature; Radar imaging; Radar remote sensing; Rough surfaces; Satellites; Sea surface; Spaceborne radar; Surface roughness; Surface waves;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.702251
