HR: 1330h
AN: G23A-03    [Abstracts]
TI: Wetlands Application of Interferometric SAR Measurements: examples from Florida and Louisiana
AU: * Kim, S
EM: skim@rsmas.miami.edu
AF: Division of Marine Geology and Geophysics, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1098 United States
AU: Wdowinski, S
AF: Division of Marine Geology and Geophysics, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1098 United States
AU: Amelung, F
AF: Division of Marine Geology and Geophysics, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1098 United States
AU: Dixon, T H
AF: Division of Marine Geology and Geophysics, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1098 United States
AB: As a new challenge field of SAR application, studies on water level change in the flood plain, wetland and coastal region have been carried out by using L-band SAR data. These studies show spatially detailed, quantitative images of water levels that can be never obtained from sparsely deployed in-situ measurements. Unlike successful results acquired from L-band interferometry, it is deemed that C-band interferometry does not work in inundated vegetation areas. However, we recently found that C-band interferogram (ERS-1/2 and RADARSAT-1) with short acquisition time intervals (~100 days) can maintain excellent coherence over the Everglades and Louisiana wetlands. Our results also show that in some regions (e.g., Manchac Swamps, Louisiana) coherence can be maintained over three year period, and large baseline (~2 km) can be allowed to get a high coherent pair in Everglade, as long as the time span between the observations is short. Coherence of interferometric pair basically depends on the kind of land cover as well as time interval and baseline. In this study, we present the characteristic of observed interferometric fringe patterns and their geophysical meaning. In addition, the relationship between the coherence over wetland and the temporal and perpendicular baselines will be investigated.
DE: 1831 Groundwater quality
SC: Geodesy [G]
MN: 2005 Joint Assembly