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Space‐based measurements of sheet‐flow characteristics in the Everglades wetland, Florida
Author(s) -
Wdowinski Shimon,
Amelung Falk,
MirallesWilhelm Fernando,
Dixon Timothy H.,
Carande Richard
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl020383
Subject(s) - wetland , environmental science , flow (mathematics) , hydrology (agriculture) , geology , water flow , remote sensing , soil science , ecology , geotechnical engineering , physics , biology , mechanics
New space‐based observations of South Florida with interferometric SAR (InSAR) reveal spatially detailed, quantitative images of water levels in the Everglades. The new data capture dynamic water level topography, providing the first detailed picture of wetland sheet flow. We observe localized radial sheet flow in addition to well‐known southward unidirectional sheet flow, modelled as a linear diffusive flow. We obtain quantitative estimates of flow diffusivity (23–91 m 2 /s), the first space‐based estimates of such hydrologic parameter for the Everglades. Space‐based hydrologic observations can provide critical information for monitoring, understanding and managing wetland sheet flow, and contribute to wetland restoration.