Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (1): add | show Print this page

one publication added to basket [224608]
Mapping surface roughness and sediment texture of an estuarine intertidal flat using ERS-2 SAR imagery
van der Wal, D.; Wielemaker-Van den Dool, A.; Herman, P.M.J. (2005). Mapping surface roughness and sediment texture of an estuarine intertidal flat using ERS-2 SAR imagery. ESA-SP 572: 619-625
In: ESA Special Publications. ESA Publications Office. ISSN 0379-6566; e-ISSN 1609-0438, more

Available in  Authors 
Document type: Conference paper

Authors  Top 
  • van der Wal, D., more
  • Wielemaker-Van den Dool, A., more
  • Herman, P.M.J., more

Abstract
    Synoptic information on surface characteristics of estuarine intertidal flats, such as surface roughness and sediment texture, is required to support coastal management. This study aims to derive such information from space-borne Synthetic Aperture Radar. Estimates of the backscatter coefficient s0 were extracted from ESA ERS-2 SAR PRI imagery (acquired during low tide), of an intertidal flat in the Westerschelde, southwest Netherlands. The data were related to matching field measurements of surface roughness (RMSz) and mud content. A significant positive relationship was found between surface roughness and the backscatter coefficient. Surface roughness was also significantly correlated with mud content, with surface ripples being more pronounced in sand than in mud. This resulted in a significant negative correlation between mud content and the backscatter coefficient. The relationships found are used to map the surface characteristics from ERS-2 SAR imagery.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors