Helmand river hydrologic studies using ALOS PALSAR InSAR and ENVISAT altimetry
Marine Geodesy
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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.
Suggested Citation
Lu, Z., Kim, J., Lee, H., Shum, C., Duan, J., Ibaraki, M., Akyilmaz, O., Read, C., 2009, Helmand river hydrologic studies using ALOS PALSAR InSAR and ENVISAT altimetry: Marine Geodesy, v. 32, no. 3, p. 320-333, https://doi.org/10.1080/01490410903094833.
| 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 |
| Publication Date | August 11, 2009 |
| Year Published | 2009 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 14 p. |
| First page | 320 |
| Last page | 333 |