Inundation discriminated using sun glint

Inundation is linked to water, carbon, and energy budgets at landscape to global scales. We describe a new remote-sensing technique for identifying inundated areas based on the properties of the glitter-the strong, angular signature reflection that is characteristic of surface water and uncharacteri...

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Bibliographic Details
Published in:	IEEE transactions on geoscience and remote sensing Vol. 40; no. 6; pp. 1279 - 1287
Main Authors:	Vanderbilt, V.C., Perry, G.L., Livingston, G.P., Ustin, S.L., Diax Barrios, M.C., Breon, F.-M., Leroy, M.M., Balois, J.-Y., Morrissey, L.A., Shewchuk, S.R., Stearn, J.A., Zedler, S.E., Syder, J.L., Bouffies-Cloche, S., Herman, M.
Format:	Journal Article
Language:	English
Published:	New York, NY IEEE 01-06-2002 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Airborne sensing Applied geophysics Carbon Continental interfaces, environment Data analysis Earth Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Hydrology Internal geophysics Inundation Natural hazards: prediction, damages, etc Ocean, Atmosphere Polarization Reflection Reflectivity Remote sensing Sciences of the Universe Sensor phenomena and characterization Signatures Soil Soils Sun Surface water Vegetation Water floods reflectance remote sensing vegetation energy balance cartography surface water wetlands methane polarization land cover direction radiance
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Summary:	Inundation is linked to water, carbon, and energy budgets at landscape to global scales. We describe a new remote-sensing technique for identifying inundated areas based on the properties of the glitter-the strong, angular signature reflection that is characteristic of surface water and uncharacteristic of other cover types. We discriminated three cover types-vegetation emergent above inundated soils, open water, and noninundated cover types-from analysis of directional data collected in the red spectral band by the airborne POLDER (Polarization and Directionality of Earth's Reflectance) sensor. We found that values of the normalized difference vegetation index (NDVI) decreased dramatically in the glitter direction, providing an indication of surface water. Application of our new technique holds promise for mapping the seasonal and interannual extent of inundation, a key descriptor of wetlands hydrology.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0196-2892 1558-0644
DOI:	10.1109/TGRS.2002.800233