Perbandingan Karakteristik Batuan Beku Erupsi Gunung Gamalama dan Gunung Talang

Andreas, Alexandros; Putra, Ardian

doi:10.25077/jfu.7.4.293-298.2018

Cited by 7 publications

(7 citation statements)

References 1 publication

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“…Luasan tanah andisol di sub DAS Kesambi 5,62% atau 379,78 hektar. Tanah entisol, inceptisol dan andisol merupakan tanah yang terbentuk dari bahan vulkanik (Andreas & Putra, 2018;Baskan et al, 2016;Fauzi et al, 2004). Ketiga tanah memiliki sifat tekstur tanah dengan fraksi liat yang rendah.…”

Section: Jenis Tanahunclassified

Identifikasi Dan Estimasi Kerusakan Tanah Dengan Metode Berbasis Obia Citra Satelit Sentinel-2b Dan Pembobotan Lereng Gunung Raung

Basuki

Hermiyanto²,

Budiman³

2023

JRPB

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Gunung Raung merupakan hulu DAS Bedadung. DAS Bedadung merupakan sungai yang membelah Kabupaten Jember dan memiliki peran penting dalam kehidupan masyarakat Jember salah satunya sebagai sumber air pertanian. Penggunaan lahan di lereng Gunung Raung digunakan untuk hutan, perkebunan, sawah, dan tegalan. Luas tutupan lahan di lereng Gunung Raung sebelah barat selama 25 tahun menurun sebesar 34,74% (hutan), 35,07% (perkebunan), 54,17% (sawah tadah hujan). Tindakan secara cepat dan akurat dalam memperbaiki kondisi tanah dan lahan yang sesuai kaidah konservasi, sehingga kerusakan tanah dapat diperbaiki dengan langkah pertama memetakan wilayah potensi status kerusakan tanah. Tujuan penelitian Mengidentifikasi dan mengestimasi Kerusakan Tanah Menggunakan Metode Berbasis OBIA Citra Satelit Sentinel-2B dengan pembobotan Lereng Gunung Raung. Metode penelitian menggunakan metode diskriptif eksplorasi dengan mengabungkan metode Berbasis Object-Based Image Analysis (OBIA) Citra Satelit Sentinel-2B dan pembobotan. Tahapan analisis dalam metode OBIA melalui 3 tahapan meliputi koreksi atmosferik, segmentasi dan klasifikasi. Analisis statistic menggunakan analisis sidik ragam, regresi dan korelasi. Hasil analisis potensi kerusakan tanah di sub DAS Kesambi yang didasarkan pada analisis OBIA dan pembobotan bahwa potensi kerusakan tanah di wilayah penelitian dibagi menjadi tiga yaitu sangat rendah 16,61% (1.122,99 hektar), rendah 63,94% (4323,14 hektar), dan sedang 19,45% (1315,17 hektar). Parameter yang berpengaruh terhadap kecepatan kerusakan tanah yaitu relief/lereng dan penggunaan lahan dengan nilai korelasi yang sedang (0,421-0,601).

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Section: Jenis Tanahunclassified

Identifikasi Dan Estimasi Kerusakan Tanah Dengan Metode Berbasis Obia Citra Satelit Sentinel-2b Dan Pembobotan Lereng Gunung Raung

Basuki

Hermiyanto²,

Budiman³

2023

JRPB

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“…The soil textures of the three locations varied, and the surface textures were sandy loam and loam. The soil texture of paddy fields has not made much difference because most of the study sites are made of weathered alluvial and volcanic tuff (Wildani et al, 2013;Andreas & Putra, 2018;Sukarman et al, 2020). The parent material has a young age, and from that base, the texture is found to be gritty.…”

Section: Table 3 Morphology Of Paddy Fields At the Foot Of Mount Raungmentioning

confidence: 99%

Physical-Chemical Characteristics and Soil Classification of Lowland Alluvial Land Using Three Soil Classification Systems

Basuki,

Mandala,

Farisi

et al. 2023

JTEP-L

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The total area of irrigated rice fields on the slopes of Mount Argopura is 21,420.02 hectares. Soil that experiences flooding will change the characteristics of the physical, chemical, and soil classification properties. The aim of the study was to examine the soil characteristics and classification system of paddy fields on the slopes of Mount Argpura. The research was conducted in July–September 2022 in paddy fields on the slopes of Mount Raung. Soil analysis in the laboratory of the Faculty of Agriculture, University of Jember This research uses a descriptive exploratory method through field surveys. Parameter research on the chemical-physical characteristics of soil and soil classification The research shows that the average rainfall of paddy fields at the foot of Mount Argopura is 2,275 mm per year with a standard deviation of 514 mm and a coefficient of variance of 23%. The morphological horizons of the genesis results in paddy fields are generally Apg, Adg, Bwg, and Cg. The USDA's classification of soil Hydraquentic Humaquepts (pedon 1), Typic Epiaquepts (pedon 2), Aeric Epiaquepts (pedon 3), Indonesian soil classification Gleisol molik (pedon 1), Gleisol eutric (pedon 2), and Gleisol eutric (pedon 3), according to WRB/FAO Molic epireductic Gleisol (Aphihumic) (pedon 1), ochric reductive gleysol (ochric, clayic) (pedon 2), and ochric siltic reductive gleysol (pedon 3). Keywords: Mount Argopura, Rice fields, Tillage, Volcanics

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“…In a long period of time, the caldera collapse was filled with water from springs, rivers, groundwater and rainwater. The eruption of Mount Maninjau created pyroclastic deposits along 220 -250 km 3 which spread up to 75 km from the core of the eruption. [2] The material released by the volcano is in the form of volcanic ash, lava, pumice.…”

Section: Introductionmentioning

confidence: 99%

“…Lake Maninjau stores various elements contained in the released material. The elements that make up magnetic minerals are Fe, Si, Ca, Al, K, Ti [3]. The collection of several elements forms the raw magnetic mineral.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Pyroclastic Deposits around Lake Maninjau Agam District, West Sumatera, Indonesia based on Magnetic Susceptibility

et al. 2022

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Lake Maninjau is an erupting volcano in West Sumatra Province. The results of the eruption have now settled in various places and scattered in all directions due to the transportation process. The process of transporting volcanic material is caused by several factors such as wind and rain. This study aims to analyze the distribution pattern of volcanic material that is scattered around Lake Maninjau, Agam Regency. We have 25 types of samples divided into 3 categories. There are pumice, lava, and ash. This research was conducted at the FMIPA UNP Laboratory using the rock magnetization method. In this study, a Bartington MS2 with MS2B sensor was used by calculating the magnetic susceptibility value based on the mass of the sample. The results of the magnetic susceptibility analysis obtained varied between 74.7×10-8 - 3956.7×10-8 m3/kg which is included in the ilmenite (FeTiO3) group. The highest value of vulnerability was 2800×10-8 - 4000×10-8 m3/kg found at the core of Lake Maninjau ± 5.0 km seen from the green contour map. The lowest magnetic susceptibility values 0 - 800×10-8 m3/kg were found in the western part of Lake Maninjau and the material was deposited at a distance of ± 13 km from the core of the Maninjau caldera. Deposits were also found in the eastern part of Lake Maninjau ± 22.4 km from the core of Lake Maninjau and to the Middle East ± 23 miles from the core of the Maninjau caldera. The white color represents 1600 - 2000×10-8 m3/kg which is included in the moderate magnetic susceptibility value, which is ± 4 km to the southeast of the Maninjau caldera. The benefit that can be taken from this research in the ink industry is the presence of a magnetic mineral distribution map based on suseptibility values and makes it easier to find raw materials for making ink around Lake Maninjau. HIGHLIGHTS Lake Maninjau stores various elements contained in the released material. The elements that make up magnetic minerals are Fe, Si, Ca, Al, K, Ti. The collection of several elements forms the raw magnetic mineral Volcanic material contains the mineral ilmenite which in theory can be used as a raw material for making TiO2 pigments, ferrous metals and chemical compounds containing iron. In the industrial field TiO2 is widely used as a paint pigment, additives in the paper-making process, ceramic raw materials, pharmaceutical industry raw materials and TiO2 is also widely used for photoclinic materials Superparamagnetic minerals are present in volcanic rock samples resulting from an eruption, the magnetic sensibility values at high frequencies are slightly lower than the magnetic susceptibility values at low frequencies. If there are no superparamagnetic minerals (SP) It can be assumed that the ancient volcanic eruptions of Maninjau belong to the type of plinia eruption which is highly exposed from magma with high viscosity or acid magma, the composition of the magma is andesitic to rhyolitic GRAPHICAL ABSTRACT

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Perbandingan Karakteristik Batuan Beku Erupsi Gunung Gamalama dan Gunung Talang

Cited by 7 publications

References 1 publication

Identifikasi Dan Estimasi Kerusakan Tanah Dengan Metode Berbasis Obia Citra Satelit Sentinel-2b Dan Pembobotan Lereng Gunung Raung

Identifikasi Dan Estimasi Kerusakan Tanah Dengan Metode Berbasis Obia Citra Satelit Sentinel-2b Dan Pembobotan Lereng Gunung Raung

Physical-Chemical Characteristics and Soil Classification of Lowland Alluvial Land Using Three Soil Classification Systems

Distribution of Pyroclastic Deposits around Lake Maninjau Agam District, West Sumatera, Indonesia based on Magnetic Susceptibility

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