KHOFIFAH, Siti (2023) Pemodelan Struktur Bawah Permukaan Gunung Lumpur Kesongo Kabupaten Blora Jawa Tengah berdasarkan Data Anomali Satelit Gravimetri. Skripsi thesis, Universitas Jenderal Soedirman.

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Abstract

Mud volcano is a terminology in the science of geology that is genetic in nature, namely a material phenomenon that has high pressure caused by the intrusion of mud or a mixture of mud and rock fragments. Processing of satellite imagery anomaly gravity field data complete with longitude, latitude and elevation positions obtained through GGMPlus2013 which has been corrected to free air correction. So it was carried out including topographic corrections and Bouguer corrections, then transformation to a flat plane and upward continuation to a height of 7,500 m. Then make corrections to regional anomaly data with gravity field anomaly data in a flat field so that residual anomalies are obtained which are then used to make modeling. Two-dimensional (2D) modeling of the subsurface geology of Mount Lumpur Kesongo in Jati District, Blora Regency based on gravimetric satellite gravity anomaly data produces two models of trajectories that are not much different. This is because the Bledug Kesongo area has a sloping topography and is relatively the same. There are four types of rock in the study area, namely volcanic sand with a density of 2.58-2.61 gr/cm3; Sandstone with a density of 2.56-2.75 gr/cm3; Limestone with a density of 2.6-2.8 gr/cm3; and Claystone with a density of 2.64-2.83 gr/cm3.

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