IDENTIFIKASI STRUKTUR RESISTIVITAS DAERAH GEOTHERMAL “T” BERDASARKAN HASIL PEMODELAN 2D DATAMAGNETOTELURIK

*Nur Rachmaningtias  -  Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang, Indonesia
Agus Setyawan  -  Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang, Indonesia
Imam Baru Raharjo  -  PT.Pertamina Geothermal Energy, Jakarta Pusat, Indonesia
Published: 1 Apr 2014.
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Abstract

Resistivity structure identification of magnetotelluric data was made at geothermal area“T”, located in southern Indonesia. This process is based on the modeling result of 2-dimention magnetotelluric data.

The modeling result of magnetotelluric data shows relativity structure dissemination on a scale of 0-10 ohm.m in a thickness of 1 km (clay cap), on a scale of 10-100 ohm.m in a depth of 1-2 km (reservoir zone), and on a scale of 100-1000 ohm.m in a depth of 2-3 km (heat source zone). The result of relativity structure dissemination can be used to delineate an area with geothermal prospect around 12 km2.

Keywords: magnetotelluric, 2 dimension modeling, structure resistivity

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