Spectral Assessment of Isostatic gravity models against CHAMP, GRACE, GOCE satellite-only and combined gravity models

• Autorzy: Tsoulis D. , Patlakis K.

Identyfikatory

DOI

10.2478/s11600-013-0176-3

• Języki publikacji: EN

Abstrakty

EN

The availability of digital elevation databases representing the topographic and bathymetric relief with global homogeneous coverage and increasing resolution permits the computation of crust-related Earth gravity models, the so-called topographic/isostatic Earth gravity models (henceforth T/I models). Although expressing the spherical harmonic content of the topographic masses, the interpretation purpose of T/I models has not been given the attention it deserves, apart from the fact that they express some degree of compensation to the observed spectrum of the topographic heights, depending on the kind of the applied compensation mechanism. The present contribution attempts to improve the interpretation aspects of T/I Earth gravity models. To this end, a rigorous spectral assessment is performed to a standard Airy/Heiskanen T/I model against different CHAllenging Minisatellite Payload (CHAMP), Gravity Recovery and Climate Experiment (GRACE), Gravity field and steadystate Ocean Circulation Explorer (GOCE) satellite-only, and combined gravity models. Different correlation bandwidths emerge for these four groups of satellite-based gravity models. The band-limited forward computation of the models using these bandwidths reproduces nicely the main features of the applied T/I model.

Słowa kluczowe

EN

GRACE-only models; CHAMP-only models; GOCE-only models; combined gravity models

PL

model GRACE; model CHAMP; model GOCE; połączone modele grawitacji

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2014
• Tom: Vol. 62, no. 4
• Strony: 679--698
• Opis fizyczny: Bibliogr. 38 poz.

Twórcy

autor

Tsoulis D.

• Department of Geodesy and Surveying, Aristotle University of Thessaloniki, Thessaloniki, Greece

autor

Patlakis K.

• Department of Geodesy and Surveying, Aristotle University of Thessaloniki, Thessaloniki, Greece

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