Pemanfaatan Data Anomali GravitasiCitra GEOSAT dan ERS-1 Satelliteuntuk Memodelkan Struktur GeologiCekungan BentarsariBrebes

Kurniawan, Fatwa Aji and , Sehah (2012) Pemanfaatan Data Anomali GravitasiCitra GEOSAT dan ERS-1 Satelliteuntuk Memodelkan Struktur GeologiCekungan BentarsariBrebes. Indonesian Journal of Applied Physics, 2 (2). pp. 1-14. ISSN 2089 –0133

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    Abstract

    An estimation of subsurface geological structure of Bentarsari Basin has been done by using gravity field anomaly data. Gravity anomaly data which used in this study is from Geodetic Satellite (GeoSat) dan European Remote Sensing-1 (ERS-1) satellite that is processed up to Free Air Correction. The step in the Next data processing is applying Bougercorrection and Terrin Correction to obtain complete Bougeranomaly that is topographically dependent. Projection on to a flat surface an altitude of 482m is equivalent to using the Taylor approximation method. The anomalies that are used in the interpretation of gravity data is the continuation of the residual anomaly lifted to an altitude of 13,000m. The Bougerdensity used in this survey is average density of the earth crust 2.67g/cm3 . Subsurface modeling is done using the Gav2DC for windows software. The general results of the modeling showed thatthe subsurface geological structure of Bentarsari Basin is composed of 5 rock layers. These layers are breccia which has a density of 2.82 g/cm3 and average thickness 1000 –4300m, andesite has a density of 2.67g/cm3 and average thickness 300 –2000m,sandstone has a density of 2.32g/cm3 and average thickness 300 –1000m, clay has a density of 2,25g/cm3 and average thickness 600 –1500m, and sandy clay has a density of 2,17g/cm3 and average of thickness 300 –1000m. Based onthe available geologicalinformation it can be inferredthat solid bitumen of coal is locatedon alayer of the sandy clay. Keywords: gravity anomaly, Bentarsari Basin, GeoSat, ERS-1 satellite

    Item Type: Article
    Uncontrolled Keywords: gravity anomaly, Bentarsari Basin, GeoSat, ERS-1 satellite
    Subjects: Q Science > QC Physics
    Q Science > QE Geology
    Divisions: UNSPECIFIED
    Depositing User: Users 857 not found.
    Date Deposited: 10 Jul 2013 06:58
    Last Modified: 10 Jul 2013 06:58
    URI: https://eprints.uns.ac.id/id/eprint/1778

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