Ellipsoidal topographic potential – new solutions for spectral forward 5 gravity modelling of topography with respect to a reference ellipsoid
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Layer - based modelling of the Earth ’ s gravitational potential up 1 to 10 km - scale in spherical harmonics in spherical and ellipsoidal 2 approximation 3
Global forward modelling of the Earth’s gravitational potential, a classical problem in geophysics 8 and geodesy, is relevant for a range of applications such as gravity interpretation, isostatic hypothesis testing 9 or combined gravity field modeling with high and ultra-high resolution. This study presents spectral forward 10 modelling with volumetric mass layers to degree 2190 for the first t...
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The uppermost masses of the lithosphere notably the land topography, bathymetry and ice make a significant contribution to the gravity signal captured by ESA’s GOCE gravity mission [1,2]. This circumstance is used 1) to evaluate ESA GOCE gravity field models of all generations, 2) to evaluate various topographic data sets and 3) to compute a global Bouguer gravity anomaly map. All of the above ...
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A surface spherical harmonic expansion of gravity anomalies with respect to a geodetic reference ellipsoid can be used to model the global gravity field and reveal its spectral properties. In this paper, a direct and rigorous transformation between solid spherical harmonic coefficients of the Earth’s disturbing potential and surface spherical harmonic coefficients of gravity anomalies in ellips...
متن کاملBand - limited topographic mass distribution generates full - spectrum 4 gravity field – gravity forward modelling in the spectral and spatial
24 Most studies on gravity forward modelling in the spectral domain truncate the gravitational 25 potential spectra at a resolution commensurate with the input topographic mass model. This 26 implicitly assumes spectral consistency between topography and implied topographic potential. 27 Here we demonstrate that a band-limited topographic mass distribution generates gravity signals 28 with spec...
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In this paper, a method is proposed for producing gravity acceleration at sea surface in the Persian Gulf. This method is based on the Geoid height from satellite altimetry, high resolution Geopotential models, and ellipsoidal splines. First, the definition of the ellipsoidal spline functions is presented in a Hilbert space, which is consisted of infinitely often differentiable functions. In or...
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تاریخ انتشار 2014