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JURNAL SAINS DAN TEKNOLOGI INDONESIA

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ANALISIS MORFOLOGI DAN GEOLOGI BENCANA TANAH LONGSOR DI DESA LEDOKSARI KABUPATEN KARANGANYAR Prawiradisastra, Suryana
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Karanganyar administratively belongs to Central Java Province, the average height is 511 meters on the sea surface and the climate is tropic with temperature 22º - 31º. The area of Karanganyar district is 77,378.6374 ha, which consists of the rice field 22,844.2597 ha and the dry ground is 54,534.3777 ha. Based on data from six weather forecast offices located in Karanganyar, the number of rain day during 2005 year were 99 days with the average of rainfall 6,017 mm, where the highestrainfall happened in March and the lowest happened in July and in August. The northern part occupied by the Lawu volcano is a part of the active Quarternary volcanic zone. Hills north of Tirtomoyo river, are a folding hills showing a NE-SW direction. Morphogenetically, the mountainous terrain in this area is influenced by structure and lithologic characteristics.

ANALISIS POTENSI KEGEMPAAN DAN TSUNAMI DI KAWASAN PANTAI BARAT LAMPUNG KAITANNYA DENGAN MITIGASI DAN PENATAAN KAWASAN Naryanto, Heru Sri
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The west coast of Lampung area is included of high potential of disasters, both earthquake and tsunami. The Sumatera active fault zone and subduction zone are located in the area and as a source of earthquake hazards. The big earthquakes had struck in the in 1933 and 1994, causing great damages and manycasualties. Tectonic earthquake accompanied by tsunami causes sea water demolished main land kilometers away in the lowland topography of west coast of Lampung. The accuracy data of earthquake and tsunami disasters reduction are needed for disaster mitigation, land use management,regional planning and sustainable development in west coast of Lampung. All aspects of disaster risk reduction are well considered in order to minimize possible vulnerabilities and disaster risks throughout the society, activity, and place.

ANALISIS PASCA BENCANA TSUNAMI CIAMIS - CILACAP Tejakusuma, Iwan G.
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Earthquake with magnitude 7,7 on the Richter scale happened on 17 July 2006 in Indian Ocean, south of Ciamis District at 10 kilometer depth. The earthquake has generated tsunami and causing disaster in the coastal areas of Ciamis – Cilacap.More than 500 people died and hundred of buildings were damage. Field investigations showed that inundation along the affected coastal areas of Ciamis – Cilacap depend on the coastal morphology. In the areas with sand ridges the inundation distance were reduced significantly for example only about 150 meter in Widarapayung compared to 500 meter to 1 kilometer in Pangandaran. Damage to buldings depend on the building constructions. Wooden buildings were easily swept away by the tsunami waves. Concrete buildings without reinforced were heavily or completely damage compared to more withstand reinforced concrete buildings.

PENELITIAN ASPEK LINGKUNGAN FISIK PERAIRAN SEKITAR PELABUHAN SABANG Edyanto, CB Herman
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Ports with all ships movement might be one of the busiest center of activities in the coastal areas. It could be understood since ports become the main gates where passengers and goods are collected and distributed from and to entire of state. The affect from these activities may effect to its degradation of waters quality around port because of oil spill, dismissal of chemicals, liquid and solid waste around it. Sabang port lay in an international fairway trajectory which have crisis to oil spill and other discard materials to the territorial waters Understanding the quality of territorial waters will help to overcome the problems which may be faced at a period to come.

KAJIAN PENILAIAN BAHAYA TANAH LONGSOR PROVINSI SUMATERA UTARA kurniawan, lilik
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Landslide assessment is the process by which decision-makers begin to bring order to the chaos that result from a disaster. Landslide hazard zonation helps in identifyingstrategic points and geographically critical areas prone to landslides. Landslide hazard zonation map was prepared by integrating the effect of various triggering factors. Conditions of geomorphology, hydrogeology, soil types and their distribution, and also current landuse are considered as supported data. Zonation mapin Sumatera Utara Province was divided into four zones of landslide : zone of very low susceptibility to landslide 16.164,76 km2, zone of low susceptibility to landslide 33.166,54 km2, zone of moderate susceptibility to landslide 20.120,47 km2, zone of high susceptibility to landslide 401,89 km2. Tapanuli Selatan region has widest zone of high susceptibility to landslide 8,3 km2.

IDENTIFIKASI VEGETASI DI KORIDOR SUNGAI SIAK DAN PERANANNYA DALAM PENERAPAN METODE BIOENGINEERING Sittadewi, Euthalia Hanggari
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The Siak river corridor has been damaged as a result of the traffic of high capacity vessels and loss of the green belt in riverside cause of the kick of waves and poisioned of the pollutants.That’s to cause damage to part of land and vegetation in the river corridor. It’s necessary that riverside’s protection. The research is identification of vegetation on the Siak river corridor between dusun Buatan and dusun Sigentil with an objective that the result of the identification can be used in application to the Bioengineering for riverside’s protection. From the identification result, there are 20 species of plants on the Siak river corridor beetwen dusun Buatan and dusun Sigentil. There are : akasia (Acasia,sp), alang – alang (Imperata cylindrica), asam payau (Acanthus ilicifolium, L), bambu kasap (Pogonatherum, sp), bambu kuning (Bambusa vulgaris), binjai (Mangifera caesia), bintaro (Cerbera manghas, L), berembang (Sonneratia, sp), jawi – jawi (Ficus, sp), keduduh (Melastoma candidum, D.Don), kelapa sawit (Elaeis guineensis), kempas (Koompasia malaccensis), manggis (Garcinia, sp), pandan (Pandanus, sp), putat (Barringtonia spicata), rengas (Glutha renghas), rumbia (Nypha fructicans,Wurmb), rumput kumpai (Hymenachne acutigluma), rumput teki (Cyperus rotundus), waru (Hibiscus tiliaceus, L). Some of the species are rengas (Glutha renghas), bintaro (Cerbera manghas, L), pandan (Pandanus, sp), keduduh (Melastoma candidum, D.Don), rumput teki (Cyperus rotundus), rumput kumpai (Hymenachne acutigluma), alang – alang (Imperata cylindrica), bambu kuning (Bambusa vulgaris), bambu kasap (Pogonatherum, sp) and rumbia (Nypha fructicans, Wurmb) can be used or have contribution in the Bioengineering application for riverside’s protection beetwen dusun Buatan and dusun Sigentil or the other segmens of the Siak river corridor have the same of phisic characteristics.

PENGARUH FLUKTUASI DEBIT TERHADAP POLA FLUKTUASI KARBON DI SUNGAI SURABAYA prihartono, prihartono
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Fluctuation of carbon in rivers are considered to be reflection of their rivers discharge fluctuation. To monitor carbon concentration fluctuation in Surabaya river, several water samples were analyzed automatically in Automated Water Monitoring System MERMAID (Marine, Environmental Remote-Controlled Monitoring and Integrated Detection) for Total Inorganic Carbon (TIC) and Total Organic Carbon (TOC). An inverse relationship with discharge was found in this study, relatively high TIC and TOC observed at low discharge and low TIC and TOC in high discharge. It shows dilution process of carbon organic and inorganic during rainy seasons and accumulation process during dry seasons. Inorganic carbon (TIC) is the dominant form of carbon transport in Surabaya river. The high amount of inorganic suggesting basin-wide flushing with dominant allochthonous HCO3 - from carbonate rocks regions in Brantas basin.

STUDI KESUBURAN TANAH DAN ANALISIS KESESUAIAN LAHAN UNTUK KOMODITAS TANAMAN PERKEBUNAN DI KABUPATEN BENGKALIS Soewandita, Hasmana
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Soil fertility is important factor for land management to develop agriculture commodities. With the information of soil fertility condition, then land potension for agriculture plant can beknown. Nutrient content in soil and information of land ecology characteristics, then limited factor of plant growth can be soluted with an exact fertilizing doze, amelioration treatment,drainage/irrigation etc. Soil characteristic in Bengkalis District, Soil acidity (pH) is high acid. This condition has influence to cations so difficult to exchange, cation exchane capacity (KTK) is low. Inspite of that, macro nutrient e.g total N, K2O and P2O5 are fluctuative. Analysis of land suitability for plantation plant commodity development show that land has moderately suitable (S2), marginally suitable (S3) and not suitable (N). Land area with S3 classification has greater area than S2 and N classification.

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