Gravity Tensors and Moho Depth Variations of the Region between West Italy and Eastern of Caspian Sea

Abstract

The crust structure of the region from the west of Italy to the east of the Caspian Sea was examined within the scope of this study. In addition, the effect of both the shallow and deep structure were revealed by calculating the gravity tensors of the region in different degrees. For this purpose, the spherical free air gravity anomaly of the region was first calculated. The combination of EGM2008 and GOCE DIR R4 models were used for this calculation. Then the gravity tensors of the region were calculated separately using only EGM2008 model and only GOCE DIR R4. The spherical free air anomaly of the region was calculated using the topographic model. The spherical Bouguer anomaly of the region was obtained by subtracting the anomaly obtained from this topographic model from the spherical free air anomaly obtained from GOCE DIR R4 + EGM2008 combined model. The radial averaged power spectrum of the spherical Bouguer anomaly was taken and the anomaly thought to be caused by Moho was filtered out. Moho depth map of the whole region was obtained by applying the Parker-Oldenburg inversion to the filtered anomaly. The obtained values were compared with previous studies and found to be compatible.