Zhang M.M., Lee H., Shum C.K., Alsdorf D., Schwartz F., Tseng K.H., Yi Y.C., Kuo C.Y., Tseng H.Z., Braun A., Calmant Stéphane, Filizola Naziano, Seyler Frédérique. (2010). Application of retracked satellite altimetry for inland hydrologic studies. In :
Satellite-based observations of hydrological processes. International Journal of Remote Sensing, 31 (14), p. 3913-3929. ISSN 0143-1161.
Titre du document
Application of retracked satellite altimetry for inland hydrologic studies
Année de publication
2010
Auteurs
Zhang M.M., Lee H., Shum C.K., Alsdorf D., Schwartz F., Tseng K.H., Yi Y.C., Kuo C.Y., Tseng H.Z., Braun A., Calmant Stéphane, Filizola Naziano, Seyler Frédérique
In
Satellite-based observations of hydrological processes
Source
International Journal of Remote Sensing, 2010,
31 (14), p. 3913-3929 ISSN 0143-1161
We explored the application of satellite radar altimetry for the monitoring of small inland bodies of water and hydrologic studies using a water-detection algorithm, optimally retracked TOPEX/POSEIDON data at 10-Hz sampling, and investigated the use of radar backscatter to improve land cover classification. The procedure was demonstrated over Manitoba and south-western (SW) Ontario, and the Amazon River Basin study regions. Compared with an L-band synthetic aperture radar data generated water-land cover mask, the water-detection algorithm detected more water points over the Amazon basin. High correlation of 0.98 between the retracked 10-Hz altimetry and the gauge measurements in Manitoba confirmed that the retracked TOPEX data are more accurate than the non-retracked data, and with higher along-track spatial resolution by virtue of its higher sampling at 10 Hz.
Plan de classement
Hydrologie [062]
;
Télédétection [126]
Localisation
Fonds IRD [F B010059106]
Identifiant IRD
fdi:010059106
