InSAR for water lever monitoring in the everglands wetland, south florida

Abstract

Hydrological monitoring of the Everglades is conducted by a dense network of stage satations. In order to improve the spatial resolution of the water level observations, we use space-borne InSAR measurements, which provide cm-level accuracy of water level changes with 1-50m spatial resolution depending on the sensor type. We analyzed InSAR data acquired by X-band, C-band, and L band satellites. Our analysis shows that all data types can produce coherent interferograms, as long as the time span between the observations is short. The short wavelength, X-and C-band interferograms can maintain phase over periods of several weeks, whereas the longer wavelength L-band interferograms can maintain phase over months and even years