Branco river stage gradient determination and Amazon hydrologic studies using GPS water level measurementsChengK. C.auteurautCalmantStéphaneauteurautIRDKuoC. Y.auteurautTsengH. Z.auteurautShumC. K.auteurautSeylerFrédériqueauteurautIRDSilva daJ. S.auteurauttextjournalArticle
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This study presents the result of a demonstration of Global Positioning System (GPS) hydrologic studies in a remote area. A GPS campaign was conducted using a GPS-equipped vessel and a GPS buoy to measure water level along Rio Branco, a tributary of the Amazon. The GPS water level data agree well with river gauge data and with ENVISAT radar altimeter measurements. The GPS-estimated river stage gradient of Rio Branco is 5.75 +/- 0.48 cm/km with 99% confidence, which is higher than previous estimates. This result also agrees well with ENVISAT altimetry results.specializedGPS hydrologyriver stage gradientsatellite altimetry062 126 Marine Geodesy32326728320090149-0419http://www.documentation.ird.fr/hor/PAR0000414110.1080/01490410903094460IRD Bondyhttp://www.documentation.ird.fr/hor/PAR00004141IRD - Base Horizon / Pleins textes2009-11-092009-11-09PAR00004141fre