Wetland InSAR: A new space-based hydrological monitoring tool of wetlands surface water level changes

Shimon Wdowinski, Sang Wan Kim, Falk Amelung, Tim Dixon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wetland Interferometric Synthetic Aperture Radar (InSAR) is a relatively new application of the InSAR technique, which detects water level changes in aquatic environments with emergent vegetation. It provides high spatial resolution hydrological observations of wetland and floodplains that cannot be obtained by any terrestrial-based method. However, InSAR observations are relative both in space and time and, hence, depend on terrestrial (stage) observations for calibration and validation. In this study we explore which SAR data type is most suitable for the wetland application, as well as explore the usage of InSAR for detecting water level changes in various wetland environments around the world. Our analyses indicate that longer wavelength SAR systems (L-band), horizontal (HH) polarization of the radar pulse, and short repeat orbits provide best results. Wetland InSAR applications include high spatial resolution water level monitoring, detection of flow patterns and flow discontinuities, and constraining high resolution flow models.

Original languageEnglish (US)
Title of host publicationFirst International Symposium on GlobWetland
Subtitle of host publicationLooking at Wetlands from Space
EditionSP-634
StatePublished - Nov 1 2006
Event1st International Symposium on GlobWetland: Looking at Wetlands from Space - Frascati, Rome, Italy
Duration: Oct 19 2006Oct 20 2006

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
NumberSP-634
ISSN (Print)0379-6566

Other

Other1st International Symposium on GlobWetland: Looking at Wetlands from Space
CountryItaly
CityFrascati, Rome
Period10/19/0610/20/06

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

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