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Time-variations of equivalent water heights'from Grace Mission and in-situ river stages in the Amazon basin
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.doi:10.1590/s0044-59672012000100015 fatcat:ksbqtewwqjhernqi53s6b6wgwy