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Han, S.C. (author), Riva, R.E.M. (author), Sauber, J. (author), Okal, E. (author)We quantify gravity changes after great earthquakes present within the 10 year long time series of monthly Gravity Recovery and Climate Experiment (GRACE) gravity fields. Using spherical harmonic normal-mode formulation, the respective source parameters of moment tensor and double-couple were estimated. For the 2004 Sumatra-Andaman earthquake,...journal article 2013
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Han, S.C. (author), Ditmar, P. (author)A spatiospectral localization method is discussed for processing the global geopotential coefficients from satellite mission data to investigate time-variable gravity. The time-variable mass variation signal usually appears associated with a particular geographical area yielding inherently regional structure, while the dependence of the...journal article 2007
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- Schmidt, M. (author), Fengler, M. (author), Mayer-Guerr, T. (author), Eicker, A. (author), Kusche, J. (author), Sanchez, L. (author), Han, S.C. (author) journal article 2007
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Schmidt, M. (author), Han, S.C. (author), Kusche, J. (author), Sanchez, L. (author), Shum, C.K. (author)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...journal article 2006