Branco river stage gradient determination and Amazon hydrologic studies using GPS water level measurements

Kai Chien Cheng, Stephane Calmant, Chung Yen Kuo, Hong Zeng Tseng, C. K. Shum, Frederique Seyler, Joecila Santos da Silva

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)267-283
Number of pages17
JournalMarine Geodesy
Volume32
Issue number3
DOIs
Publication statusPublished - 2009 Jul 1

All Science Journal Classification (ASJC) codes

  • Oceanography

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