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Helmand river hydrologic studies using ALOS PALSAR InSAR and ENVISAT altimetry

Marine Geodesy

By:
, , , , , , , and
DOI: 10.1080/01490410903094833

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Abstract

The Helmand River wetland represents the only fresh-water resource in southern Afghanistan and one of the least mapped water basins in the world. The relatively narrow wetland consists of mostly marshes surrounded by dry lands. In this study, we demonstrate the use of the Advanced Land Observing Satellite (ALOS) Phased Array type L-band Synthetic Aperture Radar (PALSAR) Interferometric SAR (InSAR) to detect the changes of the Helmand River wetland water level. InSAR images are combined with the geocentric water level measurements from the retracked high-rate (18-Hz) Environmental Satellite (Envisat) radar altimetry to construct absolute water level changes over the marshes. It is demonstrated that the integration of the altimeter and InSAR can provide spatio-temporal measurements of water level variation over the Helmand River marshes where in situ measurements are absent. ?? Taylor & Francis Group, LLC.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Helmand river hydrologic studies using ALOS PALSAR InSAR and ENVISAT altimetry
Series title:
Marine Geodesy
DOI:
10.1080/01490410903094833
Volume
32
Issue:
3
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Marine Geodesy
First page:
320
Last page:
333
Number of Pages:
14