Digital Analysis of Gravity Data of the Absheron Peninsula

The depth structure of the crust of the Absheron Peninsula was studied based on gravimetric data.Modern methods of mathematical processing and interpretation were used in the research work. Numericalanalysis of gravity data of the research area was performed using Hartley transform and Butterworth filter. TheSpector-Grant method was used to determine the average depth state of the masses causing the anomaly based onthe values of the gravitational field power spectrum. The power spectrum of the gravitational field of the researcharea was analyzed to determine the cutoff frequency and the average depth of the density interface that formgravity anomalies. The average depth values of the density interface forming gravity anomalies were determinedto be 6.8 and 36 km. As a result of applying the Parker-Oldenburg’s method to the regional gravity anomalies ofthe Absheron Peninsula and adjacent areas, a model of the depth of the crust-lithosphere boundary (Moho) wascreated. Inversion estimation of the gravity field using the Parker-Oldenburg’s method show that the depth of theMoho boundary on the Absheron Peninsula varies between 40-46 km. A gravity anomaly map of the Mohoboundary was created applying the forward modeling algorithm. The main purpose of the research is to study thegravity anomalies of the Absheron Peninsula as a result of spectral analysis and to get the gravity model of thedepth of the Moho boundary by applying the Parker-Oldenburg’s method.