Рад у часопису

објављена верзија

енглески

Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić

Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

Acta Geophysica

Springer

2019

We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity efect of the sediments was calculated using depth-to-basement data and density–depth function, based on borehole logging data. Bouguer slab formula was used in order to simplify basement model and calculate the operator for the linear inversion of gravity efect of the basement into lateral density distribution. The results were tested by forward modeling, and diferences between observed and modeled gravity data were used for the next iteration of the inversion and correction of density values in each point along the profle. The procedure was tested using synthetic models and feld example, and both results were satisfying, especially taking into account the simplicity of the inversion technique. The main problem was the efect of abrupt changes in the basement topography on density distribution, but it was downsized by fltering. Basement density maps were compiled based upon the density distribution along the profles.

67 (6)

67

1747

1758

10.1007/s11600-019-00328-9

1895-6572

"funkcije raspodele gustine", "lateralna raspodela gustine", "karta gustine podloge"

"Density functions", "Lateral density distribution", "Basement density map"

https://doi.org/10.1007/s11600-019-00328-9

M20

М23

33003

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