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All Journal JOURNAL ONLINE OF PHYSICS Jurnal Ilmiah Universitas Batanghari Jambi
Arsyad Ar
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Physics

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MANIFESTASI PANAS BUMI SERTA REKOMENDASI PEMANFAATANNYA DI DESA KOTO SANI DAN SEKITARNYA, KECAMATAN X KOTO SINGKARAK, KABUPATEN SOLOK, PROVINSI SUMATRA BARAT Bagus Adhitya; Yunior Ryandri Putra; Arsyad Ar
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 2 (2023): JOP (Journal Online of Physics) Vol 8 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i2.22184

Abstract

The volcanic arc or volcanic arc that extends along the western side of Sumatra Island. Koto Sani Village, Kec. X Koto Singkarak, Solok Regency, West Sumatra Province is one of the areas on Sumatra Island that has geothermal potential. In terms of the developing tectonic order, namely in the form of a geological structure in the form of the Sumani segment of the Sumatra Fault which moves in a strike slip to the right or dextral. This geological structure is one of the main components forming the geothermal system apart from the heat source, reservoir rock, stratigraphic characteristics and the cap layer. This study aims to determine the geological setting, any geothermal manifestations found in the study area and estimate the temperature below the surface for recommendations for its use. The research method used was the interpretation of satellite imagery on the 1:25,000 scale of the Indonesian Rupa Bumi map (RBI), surface geological mapping, measurement of the physical characteristics of geothermal fluids, geochemical analysis of geothermal fluids (anion-cation) and then plotting Giggenbach's triangle diagram (1991). and geothermal geothermal calculations, as well as analysis of 18O and 2H isotopes. The research area generally forms a landscape of elongated hills with quite steep valleys as a result of tectonic activity in the form of geological structures as migration routes of hot fluids from the reservoir to the surface. This is reinforced by the results of the interpretation of river flow patterns, namely meandering or sub-dendritic and elongated or called parallel as an indication of disturbance from faults or faults. Geothermal manifestations found are hot springs, sintered silica and hydrothermal alteration rocks. The estimated temperature below the surface is 407.64°C with a high temperature category and is recommended for direct use, such as the tourism and fisheries sector, as well as indirect use, such as geothermal energy power plants.
Dampak Penggunaan dan Pengolahan Tanah dalam Usahatani Sayuran Terhadap Infiltrasi Tanah Andisol di Kabupaten Kerinci Henny H; Rahmi Dianita; Arsyad AR
Jurnal Ilmiah Universitas Batanghari Jambi Vol 24, No 1 (2024): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v24i1.5024

Abstract

Andisol is a volcanic soil with a medium texture and a high organic matter content, so it is generally loose. However, the majority of vegetable farmers in Kayu Aro Barat District, Kerinci Regency carry out intensive soil cultivation in intensive land use (planting throughout the year, 2-3 times/year). Unfortunately, the role of tillage in soil and water conservation (SWC) is almost non-existent and even detrimental. One approach in SWC is the application of conservation tillage to control soil compaction so that soil infiltration is maintained. The research aims to determine the rate and capacity of Andisol soil infiltration and several factors that influence it, due to differences in the intensity of land use and cultivation in vegetable farming in Kebun Baru Village, Kayu Aro Barat District. The research used an exploratory-descriptive survey method. Observation and soil sampling points were determined using purposive stratified random sampling covering flat to sloping land, intensive land use and cultivation (planting 2-3 times/year + land cultivation 2 times/year), semi-intensive (planting 1-2 times/year + land cultivation once/year), and non-intensive (planting 1-2 times /year + land cultivation once/2 years), each land is planted with potatoes every year with various planting patterns. Soil infiltration rate was measured using a Double Ring Infiltrometer, and infiltration capacity was estimated using the Horton Equation. Soil infiltration rate and capacity are respectively 26.5 cm/hour (very fast) and 8.12 cm/hour (as is the infiltration capacity of loam-textured soil in general) on flat land with intensive land use and cultivation; much larger than other fields. On the other hand, the infiltration rate and capacity were 6.68 cm/hour (medium) and 2.27 cm/hour respectively (smaller than the infiltration capacity of silty loam soil in general), and the smallest, on sloping land that was used and cultivated not intensively. It is necessary to educate farmers to cultivate the land as necessary according to the characteristics of the soil and plant needs, to maintain the sustainability of soil function and building sustainable vegetable farming in West Kayu Aro District, Kerinci Regency.
Co-Authors Bagus Adhitya Henny H Rahmi Dianita Yunior Ryandri Putra