The character of short-period internal wave ERS SAR signatures at very low wind speeds

• Type: Article in International Scientific Journal
• Date: 1997

Authors

Da Silva, JC (Author) Other; Ermakov, SA (Author) Other; Robinson, IS (Author) Other

Journal

Title: European Space Agency, (Special Publication) ESA SP

Pages: 1305-1310

ISSN: 0379-6566

Publisher: European Space Agency

Indexing

ISI Web of Knowledge

Scopus - 0 Citations

Other information

Authenticus ID: P-007-NH8

Abstract (EN): Results of an analysis of a set of ERS-1 SAR images are presented, demonstrating the existence of three different types of IW signatures and their characteristics. Short-period oceanic Internal Waves are commonly observed in Synthetic Aperture Radar (SAR) images as systems of quasi-periodic parallel bands, typically bright and dark bands on a grey background, and sometimes simply as dark bands. Another type of signature, which has received very little attention in the literature, will be discussed in this paper. This is when internal waves appear as bright bands in a very low (dark) SAR background level. The circumstances under which the mentioned three character types of radar signatures are observed is analysed. A mechanism is proposed to explain the occurrence of single positive sign IW signatures at very low wind speeds (V < 2 m/s).

Language: English

Type (Professor's evaluation): Scientific