Print Email Facebook Twitter Regional high-resolution spatiotemporal gravity modeling from GRACE data using spherical wavelets Title Regional high-resolution spatiotemporal gravity modeling from GRACE data using spherical wavelets Author Schmidt, M. Han, S.C. Kusche, J. Sanchez, L. Shum, C.K. Faculty Aerospace Engineering Department Earth Observation and Space Systems Date 2006-04-26 Abstract We determine a regional spatiotemporal gravity field over northern South America including the Amazon region using GRACE inter-satellite range-rate measurements by application of a wavelet-based multiresolution technique. A major advantage of this method is that we are able to represent the Amazon hydrological signals in form of time series of detail signals with level-dependent temporal resolution: the coarser structures generally require only ten days, whereas the medium and finer details are computable from one month of data. To this end, we employ the basic property of multiresolution representations, which is to split a signal into detail signals, each related to a specific resolution level and computable from data covering a specific part of the spectrum. Our results, which for the first time fully exploit the spatial and temporal resolutions of GRACE data in modeling Amazon hydrological fluxes, are in good agreement with hydrological models and GPS-derived height variations. To reference this document use: http://resolver.tudelft.nl/uuid:12d4e036-03e4-4298-8986-e6603c204d98 DOI https://doi.org/10.1029/2005GL025509 Publisher American Geophysical Union ISSN 0094-8276 Source http://europa.agu.org/?view=article&uri=/journals/gl/gl0608/2005GL025509/2005GL025509.xml Source Geophysical Research Letters, 33, 2006 Part of collection Institutional Repository Document type journal article Rights (c) 2006 The Author(s); American Geophysical Union Files PDF Kusche_2006.pdf 2.42 MB Close viewer /islandora/object/uuid:12d4e036-03e4-4298-8986-e6603c204d98/datastream/OBJ/view