scholarly journals Identifikasi Bidang Gelincir Dengan Eksplorasi Geolistrik Dalam Upaya Mitigasi Bencana Alam Tanah Longsor Di Desa Tinoor

Jurnal MIPA ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Mercyas Tunena ◽  
As’ari ◽  
Gerald H. Tamuntuan
Keyword(s):  
Slip Surface ◽  
Line Length ◽  
Subsurface Structure ◽  
Cross Sectional ◽  
Main Road ◽  
Resistivity Method ◽  
On Line ◽  
Geoelectric Resistivity ◽  
Landslide Disaster

Penelitian ini bertujuan untuk memetakan struktur bawah permukaan di Jalan Raya Manado - Tomohon, di Desa Tinoor  untuk mencari keberadaan bidang gelincir sebagai mitigasi bencana alam tanah longsor. Pengukuran dalam penelitian ini dilakukan dengan menggunakan resistivitymeter MAE 612-EM, dengan jumlah elektroda yang dipakai 32 buah, spasi 2 meter, panjang lintasan 64 meter, jumlah ,lintasan 4, dan menggunakan metode geolistik resistivity konfigurasi Wenner Alfa. Data dengan format DAT diolah menggunakan software notepad dan res2dinv. Hasil pengolahan adalah tampang lintang resistivity 2D bawah permukaan yang menggambarkan keberadaan bidang gelincir.Hasil penelitian diperoleh lapisan lempung pasiran yang merupakan bagian dari bidang gelincir dengan resistivitas (30 - 215) Ω.m. Lokasi lapisan lempung pasiran pada lintasan 1 didapatkan 3 lokasi, lintasan 2 didapatkan 4 lokasi, lapisan 3 didapatkan 1 lokasi, dan lintasan 4 didapatkan 2 lokasi. Lokasi lempung pasiran terdapat pada kedalaman  (1 - 6) meter dengan panjang (12 - 14) meterThis research aims to map the subsurface structure on the Manado - Tomohon main road, in Tinoor Village to find the existence of the slip surface as the mitigation of landslide disaster. The measurements in this research were carried out by using the MAE 612-EM resistivitymeters, with 32 electrodes, 2 meters spacing, 64 of meter line length, number of line 4, and using  Wenner Alfa configuration geoelectric resistivity method. Data with DAT format is processed using notepad and res2dinv software's. The result of this prosessing is a cross-sectional resistivity 2D, that describe the existence of the slip surface.The result was obtained that the sandclay layer which is part of the slip surface with resistivity 30 - 215 ohm meter. The location of sandclay layers on line 1 was found 3 locations, line 2 was found 4 locations, line 3 was found 1 location, and line 4 was found 2 locations. The location of the sandclay is at depth (1-6) meters with length (12-14) meters.

scholarly journals Investigasi Bidang Gelincir Tanah Longsor Menggunakan Metode Geolistrik Konfigurasi Dipol-dipol Sebagai Upaya Mitigasi Bencana Alam di Kabupaten Minahasa

Jurnal MIPA ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 33
Author(s):  
As'ari _ ◽  
Seni H.J Tongkukut ◽  
Gerald H. Tamuntuan
Keyword(s):  
Slip Surface ◽  
Measurement Data ◽  
Line Length ◽  
Influential Factors ◽  
Southern Region ◽  
Shear Surface ◽  
Main Road ◽  
Resistivity Method ◽  
Geoelectric Resistivity ◽  
Dipole Configuration

Kondisi geografis Kabupaten Minahasa merupakan pegunungan dan perbukitan, jalan utama sebagai sarana akses transportasi yang menghubungan daerah bagian selatan dengan ibukota Provinsi Manado berada di lereng-lereng pegunungan ini. Telah terjadi longsor di beberapa tempat dan menutupi jalan utama. Salah satu faktor penyebab longsoran yang sangat berpengaruh adalah bidang gelincir atau bidang geser.  Guna mengantisipasi terjadinya bencana tanah longsor maka sangat penting untuk dilakukan eksplorasi geolistrik untuk inventarisasi data dan informasi potensi terjadinya bencana tanah longsor. Telah dilakukan eksplorasi untuk mengetahui potensi tanah longsor dengan menginvestigasi keberadaan bidang gelincir di Jalan Manado Tomohon. Eksplorasi menggunakan metode geolistrik resistivitas konfigurasi dipol-dipol. Pengukuran dilakukan menggunakan resistivitymeter MAE X612 EM pada 4 lintasan, lintasan 1-4 menggunakan 24 elektroda dan spasi 10 m dengan panjang lintasan 240 m. Data pengukuran diolah menggunakan software RES2DINV, hasil pengolahan berupa tampang lintang resistivitas 2 dimensi. Bidang gelincir diidentifikasi dengan resistivitas (30 - 215) Ωm, yang merupakan lapisan lempung pasiran. Bidang gelincir ditemukan pada semua lintasan, pada lintasan 1, 3 dan 4 terdapat 2 lapisan dengan kedalaman sampai 23 m. Lintasan 2 bidang gelincir teridentifikasi tersebar pada 3 lokasi dengan kedalaman mencapai 20 m.The geographical conditions of Minahasa Regency are mountains and hills, the main road as a means of transportation access that connects the southern region with the capital of Manado Province on these mountain slopes. Landslides have occurred in several places and covered the main road. One of the most influential factors for landslides is the slip surface or shear surface. To anticipate landslides, it is very important to explore geoelectricity for an inventory of data and information on potential landslides. Exploration has been carried out to determine the potential of landslides by investigating the existence of slip surface on Jalan Manado Tomohon. Exploration using geoelectric resistivity method dipole-dipole configuration. Measurements were made using MAE X612 EM resistivitymeter on 4 lines, line 1-4 using 24 electrodes and 10 m spacing with 240 m line length. Measurement data is processed using RES2DINV software, the results of processing are 2-dimensional resistivity crossection. The slip surface is identified by resistivity (30 - 215) Ωm, which is a layer of sandy clay. The slip surface is found on all lines, on lines 1, 3 and 4 there are 2 layers with a depth of up to 23 m. Slip surface at line 2 are identified spreading over 3 locations with depths reaching 20 m.

scholarly journals EKSPLORASI AKUIFER AIR BAWAH TANAH MENGGUNAKAN METODE TAHANAN JENIS 2D DI DESA SELARU KABUPATEN KOTABARU, KALIMANTAN SELATAN

2020 ◽  
Vol 5 (2) ◽  
pp. 74
Author(s):  
Rudy Hendrawan Noor ◽  
Ishaq Ishaq ◽  
Jarwanto Jarwanto ◽  
Dwi Priono
Keyword(s):  
Data Acquisition ◽  
Groundwater Potential ◽  
Rock Fractures ◽  
Secondary Porosity ◽  
Cross Sectional ◽  
Hydrological Data ◽  
Resistivity Method ◽  
Porosity And Permeability ◽  
Data Coverage ◽  
Geoelectric Resistivity

Geoelectric resistivity method is one method that can be used to characterize water-bearing rock layers (aquifers). This method is based on the existence of differences in type resistivity in the layers of rock that are flowed electrically. The use of this method is based on easy application, faster data acquisition with broad data coverage (lateral and vertical), and lower costs. Data acquisition uses two configurations or electrode arrangement, namely sclumberger and wenner-schlumberger configurations. The number of trajectories for data acquisition uses one path with a total of 28 electrodes and the spacing between the electrodes is 20 meters. The data obtained in the form of data resistivity type of each underground layer and its depth will be further analyzed using AGISSAdmin software. The results are obtained in the form of a 2-dimensional (2D) cross-sectional value of underground layers laterally and vertically. The low resistivity value will be interpreted as a layer containing ground water, which was previously corrected against the geological and hydrological data of the area. From the cross section of the type resistors, values of 20 - 317 Ωm were obtained for the wenner and wenner-schlumberger arrangements. Selaru Village consists of two rocks unit, the first rock (≤ 120 Ohm.m) in the form of Tanjung Formation rocks, with large porosity and small permeability and groundwater potential in this unit is small (0 - 40 m depth). The second rock (≥ 120 Ohm.m) is Pre Tertiary, with very little porosity and permeability, except secondary porosity in rock fractures.

scholarly journals Investigasi Akuifer Air Tanah di Banua Buha Asri 1 Kelurahan Buha Manado Dengan Menggunakan Metode Geolistrik Resistivitas

2019 ◽  
Vol 20 (1) ◽  
pp. 1
Author(s):  
As'ari As'ari ◽  
Seni Herlina J Tongkukut ◽  
Brayen A.M Pogaga ◽  
Iftita A Akasi ◽  
Fingken S Sagai ◽  
...  
Keyword(s):  
Ground Water ◽  
Cross Sectional ◽  
Groundwater Aquifers ◽  
Groundwater Aquifer ◽  
On Line ◽  
Potential Groundwater ◽  
Geoelectric Resistivity ◽  
Dipole Configuration ◽  
Almost All ◽  
Subsurface Resistivity

Investigasi Akuifer Air Tanah di Banua Buha Asri 1 Kelurahan Buha Manado Dengan Menggunakan Metode Geolistrik Resistivitas ABSTRAKPenelitian investigasi akuifer air tanah di perumahan Banua Buha Asri 1 Kelurahan Buha dengan menggunakan metode geolistrik resistivitas bertujuan untuk membuat peta model 2 dimensi sebaran air tanah di bawah permukaan. Penyebaran air tanah yang tidak merata menimbulkan masalah bagi masyarakat dalam memenuhi kebutuhan hidupnya. Keberadaan air tanah yang tersimpan dalam akuifer, dapat diidentifikasi dengan menggunakan eksplorasi geofisika. Metode geolistrik konfigurasi dipol-dipol cocok digunakan sebagai metode untuk identifikasi akuifer air tanah. Data pengukuran diolah menggunakan perangkat lunak Res2Dinv. Eksplorasi menghasilkan peta model 2 dimensi tampang lintang resistivitas bawah permukaan. Akuifer air tanah potensial teridentifikasi mempunyai resistivitas ρ ≤ 24 Ωm dengan kedalaman ≤ 8 m pada lintasan 1 dan ≤ 12 m berada pada lintasan 2. Air tanah dalam teridentifikasi pada kedalaman ≥ 20 m pada kedua lintasan.Kata Kunci: akuifer, geolistrik, resistivitasGroundwater Aquifer Investigation in Banua Buha Asri 1 Buha Village Manado by Using Resistivity Geoelectric Method ABSTRACTResearch on groundwater aquifer investigation in Banua Buha Asri 1 housing Buha Village by using resistivity geoelectric method goals to create a 2-dimensional model map of subsurface groundwater distribution. The uneven distribution of ground water causes problems for the community to fullfil their daily needs, because almost all human activities in their daily needs intersect with water. The presence of ground water stored in aquifers can be identified using geophysical exploration. The dipole-dipole configuration of geoelectric method is suitable as a method for identifying groundwater aquifers. Measured data processed by using Res2Dinv software. Exploration produced a 2-dimensional map of subsurface resistivity cross-sectional models. Potential groundwater aquifer (resistivity ρ ≤ 24 Ωm) surface with a depth of ≤ 8 m on line 1 and ≤ 12 m on line 2. Deep ground water was identified at a depth of ≥20 m on both lines.Keywords: aquifer, geoelectric, resistivity

scholarly journals Perceptions on the right to adequate food after a major landslide disaster: a cross-sectional survey of two districts in Uganda

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Peter M Rukundo ◽  
Per O Iversen ◽  
Bård A Andreassen ◽  
Arne Oshaug ◽  
Joyce Kikafunda ◽  
...  
Keyword(s):  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Adequate Food ◽  
The Right ◽  
Landslide Disaster

scholarly journals Identification of Aquifer in the MIPA Faculty - University of Jember Using 1D Geoelectrical Resistivity Method with Schlumberger Array

2020 ◽  
Vol 21 (2) ◽  
pp. 123
Author(s):  
Bayu Buwana ◽  
Nurul Priyantari ◽  
Supriyadi Supriyadi
Keyword(s):  
Volcanic Rocks ◽  
Natural Sciences ◽  
Subsurface Structures ◽  
Resistivity Method ◽  
Academic Activities ◽  
Geoelectric Resistivity ◽  
Geoelectrical Resistivity ◽  
Resistivity Log ◽  
The University ◽  
Schlumberger Array

Faculty of Mathematics and Natural Sciences University of Jember located in Sumbersari District with lithological conditions in the form of volcanic rocks, lithosol soils, and regosol soils that are capable of absorbing water and potentially as aquifers. In point of fact, in the campus zona of the University of Jember including in the Faculty of Mathematics and Natural Sciences, there is always a shortage of freshwater for various academic and non-academic activities. Therefore, research needs to be conducted to assess the lithology of subsurface structures in the FMIPA zone so that the depth of groundwater layers and aquifer layers can be determined. The study was conducted using the Schlumberger array geoelectric resistivity method at 5 VES points. The results obtained in the form of resistivity log curves can be seen that at the five points VES has lithology in the form of clay, gravel, sandstone, and groundwater layer. Each VES point was identified the groundwater layer and some of them were identified as aquifers. The aquifer with the greatest thickness is found at point VES 2, which is to the west of the Baitul Ilmi Mosque, so it is recommended as the location of a new well.Keywords: lithology, aquifers, geoelectric resistivity method, groundwater.

scholarly journals Kelebihan Berat Badan Dipicu oleh Aktifitas Media Sosial pada Remaja

2018 ◽  
Vol 12 (2) ◽  
pp. 1
Author(s):  
Sirajuddin Sirajuddin
Keyword(s):  
Cross Sectional ◽  
On Line ◽  
Quota Sampling ◽  
Line P

Latar belakang : Kelebihan berat badan yang tidak proporsional terhadap tinggi badan adalah paramater obesitas yang paling nyata dan rendahnya aktivitas fisik yang rendah adalah salah satu pemicunya. Obesitas diketahui pada siswa SMP di Kota Makassar sebesar 10,6% overweight dan 7,9% obesitas. Aktifitas media sosial adalah parameter rendahnya aktivuitas fisik. Tujuan riset ini adalah untuk menganalisis korelasi kelebihan berat badan dengan aktifitas media sosial pada siswa SMP di Kota Makassar.Metode :Metode penelitian ini adalah penelitian survei dengan pendekatan cross sectional studi. Sampel diambil dari 4 Sekolah Menengah Pertama dari  yaitu SMPN 6, 17, 12 dan 32 Kota Makassar. Besar sampel sebanyak 404 siswa yang diambil secara quota sampling setiap sekolah sebesar 100 siswa dan secara proporsional pada kelas II dan III. Berat Badan diukur dengan Seca ketelitian 0,1 kg sedangka tinggi badan diukur dengan stadiometer ketelitian 0,1 cm. Kelebihan berat  badan adalah diukur dari Indeks Massa Tubuh (kg/m2). Aktifitas fisik diukur dari kegiatan olah raga rutin (minimal 25 menit setip kegiatan dan dilakukan minimal 5 hari dalam seminggu), aktifitas media sosial (menit dan hari), dan games on line (menit dan hari). Pengolahan dan analisis data menggunakan program SPPS for windows. Uji statistika dengan Korelasi Spearmen pada kemaknaan 95%.Hasil :Hasil penelitian diketahui bahwa kelebihan berat badan pada siswa SMP di Kota Makassar adalah 18,6% dan SMP Negeri 6 adalah yang tertinggi (7,2%). Aktifutas media sosial dilakukan oleh 91,3% siswa SMP Kota Makassar dan tertinggi di SMP N 17 dan SMP 6 masing masing 24,8% dan 24%. Kelebihan berat badan berkorelasi positif dengan aktifitas media sosial (p=0,016). Indeks Massa Tubuh berkorelasi positif dengan aktif media sosial (p= 0,036) dan 0,016). Aktifitas media sosial juga berkorelasi positif dengan aktifitas bermain game on line (p=0.000).Simpulan: Kesimpulan bahwa semakin lama (menit)  siswa aktif di media sosial dan game on line, maka kenaikan berat badannya lebih nyata. Rekomendasi dari penelitian ini adalah mengatasi kelebihan berat badan dengan cara mengaktifkan siswa dalam even olah raga dan kegiatan lain di sekolah dan diluar sekolah. Membatasi pemakaian kendaraan dalam jarak tertentu dari sekolah adalah layak dicoba.

scholarly journals PEMETAAN AKUIFER AIR TANAH DI JALAN RINGROAD KELURAHAN MALENDENG DENGAN MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS

2015 ◽  
Vol 15 (1) ◽  
pp. 33 ◽  
Author(s):  
Dewi Sedana ◽  
As’ari As’ari ◽  
Adey Tanauma
Keyword(s):  
Geophysical Method ◽  
Low Resistivity ◽  
Resistivity Method ◽  
The Earth ◽  
Groundwater Aquifers ◽  
Working Principle ◽  
Geoelectric Resistivity ◽  
Subsurface Exploration

PEMETAAN AKUIFER AIR TANAH DI JALAN RINGROAD KELURAHAN MALENDENG DENGAN MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS ABSTRAK Geolistrik merupakan salah satu metode geofisika yang dimanfaatkan dalam eksplorasi alam bawah permukaan. Prinsip kerja metode geolistrik adalah mempelajari aliran listrik di dalam bumi dan cara mendeteksinya di permukaan bumi. Penelitian ini bertujuan untuk memetakan akuifer Airtanah di Jalan Ringroad Kelurahan Malendeng berdasarkan resistivitas batuan bawah permukaan. Penelitian terdiri dari 4 titik sounding pada 1 lintasan dengan jarak setiap titik 40 meter. Hasil eksplorasi diolah dengan menggunakan software IP2WIN untuk melihat data perlapisan di bawah permukaan tanah berdasarkan nilai resistivitasnya (2D) dan pesebaran titik – titik terdapatnya akuifer Airtanah. Hasil penelitian menunjukkan bahwa akuifer Airtanah berada pada daerah yang dekat sungai yaitu pada titik 4 yang memiliki nilai resistivitas rendah kurang dari 123 Ωm. Kata kunci : Geolistrik tahanan jenis, akuifer Airtanah, software IP2WIN.   THE MAPPING OF GROUNDWATER AQUIFERS AT THE RINGROAD MALENDENG VILLAGE BY USING GEOELECTRIC RESISTIVITY METHOD ABSTRACT Geoelectric is a geophysical method that is utilized in natural subsurface exploration. The working principle of geoelectric method is to study the flow of electricity in the earth and how to detect them in the earth's surface. This study aims to map the aquifer Groundwater at the Ringroad Malendeng village based resistivity of the subsurface rocks. The study consisted of four points on 1-sounding track with the distance of each point 40 meters. Exploration results were processed using software IP2WIN to view data subsurface layering based on the value of the resistivity (2D) and  point - the point of the presence of Groundwater aquifers. The results showed that the aquifer Groundwater is the area near the river is at point 4 which has a low resistivity value of less than 123 Ωm. Keywords: Geolistrik resistivity, Groundwater aquifers, IP2WIN software.

scholarly journals Efeito da gamificação na intenção de uso de treinamentos on-line: uma adaptação do modelo UTAUT aplicado no TRT-2

2019 ◽  
Vol 12 (3) ◽  
pp. 472
Author(s):  
Ludmilla Cavarzere de Oliveira ◽  
Luis Hernan Contreras Pinochet ◽  
Ricardo Luiz Pereira Bueno ◽  
Mauri Aparecido de Oliveira
Keyword(s):  
Structural Equation ◽  
Statistical Significance ◽  
Learning By Doing ◽  
Equation Modeling ◽  
Intention To Use ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Regional Labor ◽  
On Line ◽  
Facilitating Conditions

The objective of this research was to analyze the effect of gamification on intention to use online training from the partial validation of the UTAUT model for qualification of members and servers of the Regional Labor Court of the 2nd Region (TRT-2). The study analyzed the relationship between constructs performance expectancy, effort expectancy, facilitating conditions, and familiarity with the intention to use gaming in distance media.  This was conducted through an empirical application, which used the Structural Equation Modeling (SEM) for data analysis. The research was a single cross-sectional survey, carried out with TRT-2 members and servers who participated in the distance-feeding course ‘Healthy Living’ in 2015. Of the four hypotheses, only familiarity (F) was not significant as it did not serve as a behavioral intentions (BI) predictor of gamification for distance learning courses. Some explanations for such phenomenon may be career promotion and additional qualifications, learning by doing and sample size. The results confirmed that most hypotheses have a high statistical significance of the structural paths and have demonstrated that the model proposed in this study is consistent and can be applied in future studies with appropriate adjustments.

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