Comparison of different gravity field implied density models of the topography

• Autorzy: Sedighi M. , Tabatabaee S. , Najafi-Alamdari M.
• Języki publikacji: EN

Abstrakty

EN

Density within the Earth crust varies between 1.0 and 3.0 g/cm³. The Bouguer gravity field measured in south Iran is analyzed using four different regional-residual separation techniques to obtain a residual map of the gravity field suitable for density modeling of topography. A density model of topography with radial and lateral distribution of density is required for an accurate determination of the geoid, e.g., in the Stokes-Helmert approach. The apparent density mapping technique is used to convert the four residual Bouguer anomaly fields into the corresponding four gravity im-plied subsurface density (GRADEN) models. Although all four density models showed good correlation with the geological density (GEODEN) model of the region, the GRADEN models obtained by high-pass filter-ing and GGM high-pass filtering show better numerical correlation with GEODEN model than the other models.

Słowa kluczowe

EN

Bouguer anomaly; regional residual separation; density model

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2009
• Tom: Vol. 57, no. 2
• Strony: 257--270
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Sedighi M.

autor

Tabatabaee S.

autor

Najafi-Alamdari M.

• K.N. Toosi University of Technology, Faculty of Geodesy and Geomatics Engineering, Tehran, Iran,

Bibliografia

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