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Juventa, Juventa
Universitas Jambi
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Journal : JOURNAL ONLINE OF PHYSICS

 1 
APLIKASI GEOLISTRIK KONFIGURASI WENNER DALAM MENDETEKSI PENCEMARAN AIR TANAH AKIBAT GAMBUT PADA DESA SUNGAI TERAP ira kusuma dewi; Nasri MZ; Ichy Lucya Resta; Juventa
JOURNAL ONLINE OF PHYSICS Vol. 6 No. 1 (2020): JOP (Journal Online of Physics) Vol 6 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v6i1.10633

Abstract

Sungai Terap Village, Betara District, Tanjung Jabung Timur Regency is one of the areas in Jambi Province which is composed of peat soil. Peat land in this village is used by the community as agricultural and plantation land. As a result, the peat soil is degraded and damaged, causing groundwater pollution. The application of the resistivity geoelectric method can answer the question of groundwater pollution. In the current method that is injected into the earth and measures the potential difference on the surface. Geoelectric measurements were carried out in 4 lines with a length of 200 meters, electrode separation of 10 meters and n = 4. From the measurement results, it was found that groundwater was polluted due to peat soil because it had a very small resistivity value, namely 0.625-2.064 Ωm. This is because the chemical content contained in the peat soil will be carried away by rainwater that enters the surface. The effect of sea water intrusion can also pollute groundwater through drainage channels built on the peatlands.
STUDI HVSR MIKROTREMOR DALAM IDENTIFIKASI TANAH BERPOTENSI LIKUIFAKSI DI KOTA SUNGAI PENUH DAN SEKITARNYA Resta, Ichy Lucya; Juventa, Juventa; Satria, Arie; Hidaya, Rizky; Yurismawan, Yurismawan; Lefdiana, Aura; Novianda, Cici
JOURNAL ONLINE OF PHYSICS Vol. 11 No. 1 (2025): JOP (Journal Online of Physics) Vol 11 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v11i1.48570

Abstract

Kota Sungai Penuh dan sekitarnya merupakan wilayah dengan tingkat kerentanan seismik tinggi karena dilalui segmen aktif Sesar Siulak serta didominasi endapan sedimen lepas Formasi Pengasih. Penelitian ini bertujuan untuk mengidentifikasi lapisan tanah yang berpotensi mengalami deformasi dan likuifaksi dengan menggunakan metode mikrotremor Horizontal to Vertical Spectral Ratio (HVSR). Data rekaman mikrotremor dianalisis untuk memperoleh distribusi Ground Shear Strain (GSS) serta ketebalan sedimen pada beberapa titik pengukuran di Kota Sungai Penuh. Hasil menunjukkan bahwa ketebalan sedimen bervariasi antara 5 hingga 105 meter, sedangkan nilai GSS berada pada kisaran 8,10×10⁻⁶ hingga 1,10×10⁻⁴. Zona dengan GSS tinggi ditemukan di Bukit Tanco (Koto Iman dan Koto Petai), yang mengindikasikan pengaruh dominan Sesar Siulak terhadap deformasi tanah. Nilai GSS maksimum masih berada di bawah ambang regangan tanah pemicu likuifaksi (10⁻²–10⁻¹), sehingga pada kondisi gempa moderat tidak terdapat indikasi likuifaksi. Namun, dengan mempertimbangkan berbagai literatur yang menyebutkan bahwa likuifaksi dapat terjadi pada percepatan tanah puncak (PGA) serendah 0,07–0,10 g, wilayah Kota Sungai Penuh tetap berpotensi mengalami deformasi signifikan apabila terjadi gempabumi besar. Penelitian ini menegaskan perlunya mikrozonasi seismik lebih lanjut serta integrasi dengan data geoteknik untuk mendukung perencanaan pembangunan dan mitigasi bencana di wilayah tersebut.
POTENSI SUMBERDAYA AIR SEBAGAI PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) DALAM MENCAPAI SUSTAINABLE DEVELOPMENT GOALS (SDGS) DI DESA RANTAU KERMAS, KECAMATAN JANGKAT, KABUPATEN MERANGIN, PROVINSI JAMBI Deliana Siregar, Anggi; Juventa, Juventa; Ritonga, D.M. Magdalena; Rarasati, Niken; Annura Rizky, Shazkya
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.28577

Abstract

          Energy resources are resources that can be processed by humans so that they can be used to meet energy needs. Water resources are a renewable natural resource that has a volume with constant conditions in the hydrological cycle. Microhydro Power Plant (PLTMH) is renewable energy that utilizes water resources as an energy producer where the energy produced is classified as small scale energy (less than 200 kW). Electrical energy is energy that is produced from changing other energy that has strength and capacity. Sustainable Development Goals (SDGs) are a new development agreement agreed upon at the UN general assembly in September 2015 with 17 goals to encourage changes towards sustainable development, one of which is regarding clean and affordable energy which is contained in point 7. The location of this research is to determine the potential and estimate the availability of energy to fulfill electricity needs in Rantau Kermas Village,ANGKAt District, Merangin Regency, Jambi Province.                                                                       
ANALISIS KERENTANAN TANAH FAKULTAS SAINS DAN TEKNOLOGI UNIVERSITAS JAMBI DENGAN MENGGUNAKAN DATA MIKROTREMOR Kusuma Dewi, Ira; Lucya Resta, Ichy; Sucitra Amin, Sarwo; Nuklirullah, Nuklirullah; Juventa, Juventa; Situmorang, Salomo; Fitri Ramadhani, Amelia
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.28788

Abstract

Research has been carried out to carry out soil vulnerability analysis at the Faculty of Science and Technology, Jambi University. The construction of buildings at the Faculty of Science and Technology has necessitated an analysis of the vulnerability of the land around the buildings at the Faculty of Science and Technology. Based on the regional geology in this area, the Muara Enim formation (TMPM) is formed in the Tertiary age which is composed of rocks from interbedded tuffaced sandstones with tuffaced mudstones, interbedded quartz sandstones with quartz mudstones, interbedded with coal and iron oxide. The rocks formed in this formation are a type of sedimentary rock. To carry out soil vulnerability analysis, the HVSR method is applied to measure microtremors. Microtremors are a geophysical method that uses very small and continuous ground vibrations. This HVSR method is a passive seismic method using three components, namely 2 horizontal components and 1 vertical component. Microtremor measurements on the ground were carried out at 6 points around the building. The results obtained from microtremor measurements using the HVSR method are the natural frequency (f0), amplification factor (A0) and Seismic Vulnerability Index (Kg). The natural frequency (f0) value ranges from 1.30-1.82 Hz, the amplification factor (A0) value ranges from 1.69 - 3.28 times and the seismic vulnerability index (kg) value ranges from 1.814167 to 5.948834 x 10^-6 s^2/cm. Based on the Kanai classification, a frequency value < 2.5 HZ includes soil type IV and soil type II with Alluvial Rock lithology formed from delta sedimentation, top soil, mud. With a depth of 30 meters or more. This area has a very thick surface sediment, more than 30 meters. Based on the classification according to Setiawan, the amlification factor is classified as low (A0<3) to medium (3<A0<6). A low to moderate amplification factor indicates that the rock that makes it up is compact/hard. Based on the Refrizon Classification, the Seismic Vulnerability Index value is in the low (kg<3) to medium (3<kg<6) category. The seismic vulnerability index is low to medium, meaning that if a shock occurs there will be no damage because the vulnerability value is medium - low. Based on these three parameters, it can be concluded that the land around the FST building is still classified as safe from shocks.
Co-Authors A. D. Prabawa Adhitya Eko Bagus Sasongko Ahmad Dzikra Fatahillah Ahmad Fakhri Bobbybuana Amin, Sarwo Sucitra Annura Rizky, Shazkya Arif Nurrahman Bobbybuana, Ahmad Fakhri Bochori Bochori Deliana Siregar, Anggi Denny Prabawa, Aditya Edwin Permana Erna Y Hutasoit Faizar Farid Fatahillah, Ahmad Dzikra Fatkhan Fatkhan Fitri Ramadhani, Amelia Fitriyanda Herawan Gindo Tampubolon Hari Wiki Utama Herawan, Fitriyanda Hidaya, Rizky ira kusuma dewi kusuma dewi, ira Larasati, Nurrani Lefdiana, Aura Lenny Marlinda M Arief Yamin M. T. Toha Martin Horas Parulian Butar Butar Mz, Nasri Nadea Arie Saragih Nasri M Z Nasri MZ Novianda, Cici Nuklirullah, Nuklirullah Nurrani Larasati Paziati Andini rarasati, niken Rendi Gustian Resta, Ichy Lucya Rian Rian Rikaldo Pratama Ritonga, D.M. Magdalena Ritonga, D.M. Magdalene Sarwo Sucitra Amin Satria, Arie Siregar, Anggi Deliana Situmorang, Johannes Kurni Bintang Awan Situmorang, Salomo Suhban, Muhammad Wiratama, Jarot Yudhi Acnopha Yurismawan, Yurismawan