PATAHAN AKTIF DAN KEGEMPAAN DAERAH PLTA CIRATA - SAGULING DAN SEKITARNYA

Authors

  • Asdani Soehaimi Pusat Survei Geologi

DOI:

https://doi.org/10.33332/jgsm.geologi.v20i6.184

Abstract

Electric Hydro Power of Cirata (PLTA) and Saguling are located at the active thrust fault of Citarum – Cisomang (1) and Saguling (2). The gravity modelling on the north – south direction, shows these structures geology as the bounderies of the structural basin of Cirata and Saguling which are filled by Young Volcanic Deposites. Microearthquakes at the Saguling (I), Cirata (II) and Pasir Cabe (III), have the depth of < 10 Km and shown the thrust, strike slip and normal fault focalmechanisms. The maximum magnitude calculated which was based on the vertical displacement (dip slip) of two main revers fault above are 7 Ms with return period of 80 years.


Keywords: active fault, maximum magnitude, return period, Cirata

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References

Hutubessy, S., Panjaitan, S., Buyung, N., 1988. Penafsiran struktur bawah permukaan berdasarkan pada analisis data gayaberat dan kegempaan mikro di daerah bendungan Saguling, Cirata, Jawa Barat, Proc. HAGI tahunan XIII, Bandung.

Nasution,J., Imam, S., 1977. Peta Anomaly Gayaberat Lembar Bandung dan Cianjur Skala 1 : 100.000, Pusat Penelitian dan Pengembangan Geologi, Bandung.

NEIC, USGS.,2010. Data gempabumi Indonesia , 1970 -2010

Soehaimi,A., Zen,M.T., Hutubessy,S., 1998. Seismotectonic zonation as basic analysis of earthquake hazard in West Java. Proc.Sym.Japan-Indonesia IDNDR Project Volcanology, Tectonic, Flood and Sediment Hazards. Disaster Prevention Research Institute, Kyoto University:199-213.

Research Group for Active Fault of Japan. 1992. Maps of Active Fault in Japan with an Explanatory Text, University of Tokyo Press. 71: 33-45.

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Published

2010-12-10

Issue

Vol. 20 No. 6 (2010): Jurnal Sumber Daya Geologi

Section

Article

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