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| Almeida,Flavio Guilherme Vaz de; Calmant,Stephane; Seyler,Frédérique; Ramillien,Guillaume; Blitzkow,Denizar; Matos,Ana Cristina Cancoro; Silva,Joecila Santos. |
| Gravity Recovery and Climate Experiment (GRACE) mission is dedicated to measuring temporal variations of the Earth's gravity field. In this study, the Stokes coefficients made available by Groupe de Recherche en Géodésie Spatiale (GRGS) at a 10-day interval were converted into equivalent water height (EWH) for a ~4-year period in the Amazon basin (from July-2002 to May-2006). The seasonal amplitudes of EWH signal are the largest on the surface of Earth and reach ~ 1250mm at that basin's center. Error budget represents ~130 mm of EWH, including formal errors on Stokes coefficient, leakage errors (12 ~ 21 mm) and spectrum truncation (10 ~ 15 mm). Comparison between in situ river level time series measured at 233 ground-based hydrometric stations (HS) in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spatial geodesy; Hydrology; GRACE satellite; Amazon Basin. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000100015 |
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