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Louisiana wetland water level monitoring using retracked TOPEX/POSEIDON altimetry

Marine Geodesy

By:
, , , , , , , and
DOI: 10.1080/01490410903094767

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Abstract

Previous studies using satellite radar altimetry to observe inland river and wetland water level changes usually spatially average high-rate (10-Hz for TOPEX, 18-Hz for Envisat) measurements. Here we develop a technique to apply retracking of TOPEX waveforms by optimizing the estimated retracked gate positions using the Offset Center of Gravity retracker. This study, for the first time, utilizes stacking of retracked TOPEX data over Louisiana wetland and concludes that the water level observed by each of 10-Hz data with along-track sampling of ~660 m exhibit variations, indicating detection of wetland dynamics. After further validations using nearby river gauges, we conclude that TOPEX is capable of measuring accurate water level changes beneath heavy-vegetation canopy region (swamp forest), and that it revealed wetland dynamic flow characteristics along track with spatial scale of 660 m or longer. ?? Taylor & Francis Group, LLC.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Louisiana wetland water level monitoring using retracked TOPEX/POSEIDON altimetry
Series title:
Marine Geodesy
DOI:
10.1080/01490410903094767
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:
284
Last page:
302