TY - INPR A1 - Michel, Volker A1 - Wolf, Kerstin T1 - Numerical Aspects of a Spline-Based Multiresolution Recovery of the Harmonic Mass Density out of Gravity Functionals N2 - We show the numerical applicability of a multiresolution method based on harmonic splines on the 3-dimensional ball which allows the regularized recovery of the harmonic part of the Earth's mass density distribution out of different types of gravity data, e.g. different radial derivatives of the potential, at various positions which need not be located on a common sphere. This approximated harmonic density can be combined with its orthogonal anharmonic complement, e.g. determined out of the splitting function of free oscillations, to an approximation of the whole mass density function. The applicability of the presented tool is demonstrated by several test calculations based on simulated gravity values derived from EGM96. The method yields a multiresolution in the sense that the localization of the constructed spline basis functions can be increased which yields in combination with more data a higher resolution of the resulting spline. Moreover, we show that a locally improved data situation allows a highly resolved recovery in this particular area in combination with a coarse approximation elsewhere which is an essential advantage of this method, e.g. compared to polynomial approximation. T3 - Schriften zur Funktionalanalysis und Geomathematik - 28 KW - Mehrskalenanalyse KW - Spline KW - Inverses Problem KW - Numerisches Verfahren KW - Gravimetrie KW - Lokalisation KW - CHAMP KW - Harmonische Dichte KW - Satellitendaten KW - GRACE KW - GOCE KW - EGM96 Y1 - 2006 UR - https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/1823 UR - https://nbn-resolving.org/urn:nbn:de:hbz:386-kluedo-14727 ER -