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All Journal Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
S. Poedjopradjitno, S.
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Education Energy Engineering Environmental Science

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NEO-SEISMOTEKTONIK SEMENANJUNG MANADO SULAWESI UTARA Poedjopradjitno, S.
Jurnal Geologi dan Sumberdaya Mineral Vol 22, No 4 (2012): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Neo-Seismotectonic study of Manado Peninsula by using approach of geomorphology, geology data method and seismisity, obtained of picture in detail peninsula structure pattern and can interpret earthquake susceptable disaster zona. Such structure pattern is area grouped of peninsula structure become six domain structure, that is : Amurang domain structure (A), Soputan (S), Tondano (T), Manado (M), Likupang (L) and Batuangus ( BA).Based on susceptable the earthquake disaster matrix covering geomorfologi data, geology, ground and rock physical, tectonic indication, infrastructure, disaster potency and risk, peninsula area can divided to the three area susceptable to earthquake disaster namely high, middle and lower earthquake disaster susceptable zona.Key word :geomorphology, geology, seismicity and structure
MORFOTEKTONIK DAN POTENSI BENCANA ALAM DI LEMBAH KERINCI SUMATERA BARAT, BERDASARKAN ANALISIS POTRET UDARA Poedjopradjitno, S.
Jurnal Geologi dan Sumberdaya Mineral Vol 22, No 2 (2012): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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An interpretation of 1971 aerial photograph (phanchromatic) of the Kerinci valley area is intended to identify morphotectonic elements, in order to examine the genesis of Kerinci valley and to delineate a potential natural disasters zone. The interpretation shows the trace of macro morphotectonic elements related to the tectonic movements in the past, such as old faultscarp, young faultscarp, small faultscarp, shifting river channel, alignment of the valley and lineaments. Therefore landscape of the Kerinci valley was produced by structure activities that are dominated by vertical movements. Besides some of tectonic movements accompanying landforms are observed, such as a pile of fluvio volcanic fan and terrace deposites. The faultscarp pattern extends parallel to the direction of main fault in the Sumatra island and become narrows at the northern end. In this area is very potential for earthquakeKey words : morfotectonic, faultscarp, alignment, alluvial fan, earthquake
POTENSI BENCANA PELULUKAN DI DAERAH LABUHAN KABUPATEN PANDEGLANG PROVINSI BANTEN Lumbanbatu, U. M.; Hidayat, S.; Poedjopradjitno, S.
Jurnal Geologi dan Sumberdaya Mineral Vol 22, No 2 (2012): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Was done Labuhan, Banten Province, and sourounding area located on alluvial plain are composed of loose, water saturated clastic sediments such as gravel, sand, silt and clay, suseceptible to liquefaction. Investigation of potensial liquefaction hazards to identify degree of liquefaction susceptibility and its ditribution in investigated area. An earthquake source zone trigger liquefaction origionated by subduction activity as well as by activation of faulst on Sunda Strait. To obtain subsurface geological data hand drilling were conducted getting 59 bore holes; known a liqueable material such as sand deposited on beach sand, beach ridges, and palaeo channel deposits. On the basis of grain size distribution and its physical characteristics, stratigraphical position, ground water level, liquefaction susceptibility in this area can be divided into high liquefaction susceptibilityintermediate liquefaction susceptibility, low liquefaction susceptibility, and very low liquefaction susceptibilityKey words : liquefaction, earthquake, water saturated sand, labuhan
Co-Authors S. Hidayat, S. U. M. Lumbanbatu, U. M.