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Febri Hirnawan -, Febri Hirnawan
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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Journal : Bulletin of Scientific Contribution : Geology

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KARAKTERISTIK SUNGAI DI SEKITAR WILAYAH RAWAN LONGSOR DAS CITANDUY -, Zufialdi Zakaria; -, Irvan Sophian; -, Febri Hirnawan
Bulletin of Scientific Contribution Vol 9, No 3 (2011): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (801.976 KB) | DOI: 10.24198/bsc.v9i3.8272

Abstract

Characteristics of the river basin in Citanduy landslide prone areas are showing behaviors that can be read via relationship of Suspended Load with discharge. Six rivers studied show different conditions in accordance with the conditions of landslide prone areas around it, also with the condition of each rock. Avalanche region is restricted to several zones of slope stability.Turbidity of the river with small to large are, respectively are S. Cilongkeang, S. Cibarengkok, S. Cilemahurug, S. Cikawung, S. Cinyirib, and S. Cidawolong.River with Sub-watershed wich the most eroded until the lightest on the upstream and the surrounding, respectively are S. Cilongkeang, S. Cilemahurug, S. Cibarengkok, S. Cikawung, S. Cidawolong, and S. Cinyirib.Based on statistical analysis with T-test, S. Cidawolong and S. Cinyirib were not significantly different. In exponential graphics, S. Cilongkeang & S. Cilemahurug, and S. Cibarengkok & S.Cikawung, visually show the same character, but on a statistical analysis with T-test are concluded that significantly different with  = 5%.
DELINEASI RESERVOIR PANAS BUMI BERDASARKAN LITOLOGI, ALTERASI HIDROTERMAL DAN PROFIL TEMPERATUR -, Cyrke A.N. Bujung; -, Alamta Singarimbun; -, Dicky Muslim; -, Febri Hirnawan; -, Adjat Sudradjat
Bulletin of Scientific Contribution Vol 8, No 3 (2010): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.739 KB) | DOI: 10.24198/bsc.v8i3.8254

Abstract

This study aims to delineate the breadth and depth of the geothermal reservoir and the resulting temperature. The method used is a compilation of lithology, alteration and the temperature profile that is supported by literature references and well data. Delinasi prospect area and deep reservoir of data viewed by lithology, alteration and the temperature profile. Regional prospects in the region of 2000C or more temperatures are also characterized by the presence of epidote minerals and are on lava and pyroclastic stratigraphy perselingan. The results obtained two different reservoir sites, the first located at depths of 800-1300 m above sea level and an area reached 1.37 x 107 m2., While the second is located at a depth (900 m - bottom) and an area of more than 3, 38 x 106 m2. Based on the temperature profile, the type of prospect geothermal reservoir in this area is the type of dominance of steam. .
Co-Authors Adjat Sudradjat -, Adjat Sudradjat Alamta Singarimbun -, Alamta Singarimbun Cyrke A N Bujung Dicky Muslim Irvan Sophian -, Irvan Sophian Zufialdi Zakaria