Analysis and Zonation of Land Vulnerability Areas in Pekon Karangrejo Ulubelu Tanggamus Using Microzonation Method
Jurnal Geofisika(2020)
摘要
Ulubelu Tanggamus is an area that have geothermal energy potential. This region
consists of a geological structure in the form of graben and reverse fault formed between
Mount Rendingan and Mount Kukusan. Identifications that can be done include surveys to map
soil characteristics in shaking responses using microzonation methods. This study aims to
analyze the values of dominant frequency, dominant period, Vs30 and amplification. The stages
of the research carried out are processing data to obtain dominant frequency, calculating the
value of the dominant period, calculating the value of Vs30 and the amplification value, and
making a map of the soil vulnerability of the UlubeluTanggamus area. Based on the
distribution of the dominant frequency values, the UlubeluTanggamus geothermal area is
dominated by a dominant Frequency (F0) >0.5Hz which is expected to be a very thick surface
thickness of sediments more than 30m. The distribution of the dominant period value obtained is (T0)>1 where the character of the sedimentary rock type is very soft consisting of alluvial material formed from sedimentation of deltas, top soil, and mud. The distribution of the Vs30
value is dominated by the value of 100 更多
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关键词
pekon karangrejo ulubelu tanggamus,land vulnerability areas
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