Bouguer and terrain corrections in one step through forward modeling in Python
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
نویسندگان
1موسسه ژئوفیزیک
2رییس بخش گرانی سنجی
چکیده
Usually the effect of the mass between the reference surface and ground surface is removed in two stages in standard gravity reductions, Bouguer slab and terrain corrections. In this study we compute the correction that combines both of these elements by Introducing a 2d quadtree discretization which has fine cells around the observation points. The Gravity effect of cells due to discretization between the ground surface and the base surface is modeled by the Newton integral. Digital height information for the desired area and its surroundings is extracted using shuttle radar topography mission (SRTM) photos with a resolution of 90 meters. This process is performed by a database in the Python environment (SimPEG). The method is tested on a region in Central Zagros and Central Iran. Since in this discretization method it is possible to reconstruct all the space below the topographic surface, we see better results compared to the usual methods.
کلیدواژه ها

Title
Bouguer and terrain corrections in one step through forward modeling in Python
Authors
Mansoure Khaleghi Yalehgonbadi, Vahid Ebrahimzadeh Ardestani
Abstract
Usually the effect of the mass between the reference surface and ground surface is removed in two stages in standard gravity reductions, Bouguer slab and terrain corrections. In this study we compute the correction that combines both of these elements by Introducing a 2d quadtree discretization which has fine cells around the observation points. The Gravity effect of cells due to discretization between the ground surface and the base surface is modeled by the Newton integral. Digital height information for the desired area and its surroundings is extracted using shuttle radar topography mission (SRTM) photos with a resolution of 90 meters. This process is performed by a database in the Python environment (SimPEG). The method is tested on a region in Central Zagros and Central Iran. Since in this discretization method it is possible to reconstruct all the space below the topographic surface, we see better results compared to the usual methods.
Keywords
Gravity, Bouguer, topography, discretization, Python, SRTM