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All Journal JGE (Jurnal Geofisika Eksplorasi) Jurnal Geosaintek JOURNAL ONLINE OF PHYSICS Seminar Nasional Lahan Suboptimal JURNAL METEOROLOGI DAN GEOFISIKA Jurnal Geofisika Jurnal Pengabdian Masyarakat (ABDIRA) Jurnal Tiyasadarma: Jurnal Pengabdian Kepada Masyarakat Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Meteorologi dan Geofisika Jurnal Geosaintek
Resta, Ichy Lucya
Universitas Jambi
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Nursing Physics Social Sciences Other

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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.
IDENTIFIKASI LAPISAN BATUBARA MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI LAPANGAN X KECAMATAN BULIAN KABUPATEN BATANGHARI Ichy Lucya Resta; Riski Novrianti
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.v8i2.23979

Abstract

Studi ini menggunakan salahsatu metode geofisika, geolistrik, yang memberikan informasi bawah permukaan secara spasial berdasarkan sebaran nilai resistivitas. Pengukuran vertical electrical sounding (konfigurasi schlumberger) dilakukan pada 5 titik di Desa Sungai Buluh Kecamatan Bulian Kabupaten Batanghari untuk mendapatkan nilai resistivitas. Model bawah permukaan didapatkan melalui inversi data resistivitas 1-D yang kemudian dikorelasikan dengan data coring yang tersedia di dekat titik pengukuran terkait litologi. Berdasarkan model yang didapat, sebaran nilai resistivitas berada pada rentang nilai 42,5 ohm.m – 1421 ohm.m dengan kedalaman target rata-rata 30,94 m. Resistivitas tinggi (154 ohm.m – 297 ohm.m) diidentifikasi sebagai batubara sub bituminous. Berdasarkan identifikasi lapisan, ditemukan 2 seam batubara dimana seam 1 teridentifikasi pada seluruh titik pengukuran dengan rata-rata ketebalan 1,74 m dan dan kedalaman 13,50 m sedangkan seam 2 hanya terdapat 4 titik pengukuran dengan rata-rata ketebalan 3,325 m dan kedalaman 25,10 m. Disimpulkan bahwa metode geolistrik cocok digunakan dalam identifikasi lapisan batubara dengan resolusi dan akurasi yang baik.
IDENTIFIKASI KERENTANAN TANAH DAN PERCEPATAN TANAH MENGGUNAKAN METODE MIKROTREMOR DI KAWASAN KAYU ARO BARAT Sefiyanti, Fani; Sucitra Amin, Sarwo; Lucya Resta, Ichy; Hamdi, Husnul; Astuti, Putri; Amalina Fauziyah, Annisa; Fadlan Risky, Khoirul; Lefdiana, Aura; Randa Pranata, Abimbi; Anggia Harahap, Iryuvelamea
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 1 (2024): JOP (Journal Online of Physics) Vol 10 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i1.38193

Abstract

Kabupaten Kerinci, dengan keberadaan Gunung Api aktif, rentan terhadap gempa bumi. Meskipun demikian, kawasan lereng bukit, terutama di Kayu Aro Barat, masih dihuni oleh banyak penduduk. Penelitian ini bertujuan untuk mengidentifikasi potensi kerentanan tanah di wilayah tersebut menggunakan metode mikrotremor. Hasil penelitian menunjukkan adanya variasi kerentanan tanah yang signifikan. Bagian barat laut memiliki kerentanan tanah yang lebih rendah (0,40-0,85), sedangkan bagian tenggara memiliki kerentanan yang lebih tinggi (2,19-2,64). Nilai Peak Ground Acceleration (PGA) maksimum tercatat di bagian tenggara dengan rentang 251-1729 mgal. Temuan ini mengindikasikan bahwa wilayah tenggara Kayu Aro Barat memiliki potensi risiko gempa bumi yang lebih tinggi dibandingkan wilayah lainnya. Meskipun nilai PGA masih berada dalam kategori aman, perlu diingat bahwa aktivitas seismik dapat memicu pergerakan tanah dan longsor, terutama di daerah dengan topografi curam dan kondisi tanah yang labil seperti di Kayu Aro Barat. Oleh karena itu, diperlukan kajian lebih lanjut dan upaya mitigasi risiko untuk melindungi keselamatan masyarakat.
GEOPHYSICAL INVESTIGATION OF GEOTHERMAL MANIFESTATION IN SUNGAI MEDANG USING ELECTRICAL RESISTIVITY AND GRAVITY METHODS Resta, Ichy Lucya; Mahardika, Rizky; M.Z, Nazri; Hamdi, Husnul; Kusuma Dewi, Ira; Andriani, Aulia
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 2 (2025): JOP (Journal Online of Physics) Vol 10 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i2.43467

Abstract

This study investigates the geothermal manifestation in Sungai Medang, located within a volcanic arc depression zone of the Sungai Penuh Basin, formed by right-lateral movement along the segmented Siulak Fault. The exploration approach combined electrical resistivity and gravity methods to delineate subsurface features associated with hydrothermal activity. The electrical resistivity survey employed a dipole–dipole configuration with 25-meter spacing over a 400-meter line and the complementary gravity data from the Topex/Poseidon satellite altimetry were processed into Simple Bouguer Anomaly (SBA) maps. Resistivity survey revealed low-resistivity zones (11.6–99.1 Ωm), interpreted as hydrothermal fluid pathways and altered volcanic formations aligned with known fault traces, particularly the Siulak Fault segment. The gravity data indicated NW–SE trending density contrasts. Spectral analysis identified residual anomalies (~1.5 km depth) consistent with shallow sedimentary infill and structural depressions, while deeper regional anomalies (~38.7 km) reflected basement variations. The spatial correlation of resistivity lows, gravity lows, and surface manifestations suggests active geothermal upflow along structurally controlled zones. This study highlights the importance of integrating geophysical datasets for geothermal resource evaluation and offers a methodological framework applicable to similar underexplored regions in Indonesia and beyond.
IDENTIFIKASI KANDUNGAN TANAH DI KECAMATAN PEMAYUNG KABUPATEN BATANG HARI PROVINSI JAMBI Samsidar, Samsidar; maison, Maison; Ermadani, Ermadani; Latief, Madyawati; Fendriani, Yoza; Alrizal, Alrizal; Resta, Ichy Lucya; Riany, Hesti; Pebralia, Jesi
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 3 (2025): JOP (Journal Online of Physics) Vol 10 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i3.47051

Abstract

Informasi akan kandungan tanah penting diketahui sebagai dasar pengolahan pertanian. Pada Kabupaten batang Hari kecamatan pemayung Provinsi Jambi terdapat dua jenis tanah yang sering dimanfaatkan sebagai lahan pertanian yaitu tanah Ultisol dan Inseptisol. Dalam pemanfaatan sebagai lahan pertanian terhadap kedua jenis tanah tersebut umumnya pelaku pertanian melakukan penanaman langsung sehingga sering kali mendapatkan hasil yang kurang optimal akibat ketidaksesuaian jenis tanaman dan pupuk yang digunakan, untuk itu pada penelitian ini dilakukan karakterisasi terhadap tanah tersebut. Sampel tanah diambil dari 6 titik lokasi dengan ukuran 1km x 2km, selanjutnya dilakukan preparasi untuk pengukuran unsur logam dengan menggunakkan X-Ray Fluorescence (XRF), uji kandungan C-Organik dan pH. Hasil pengujian XRF menunjukkan bahwa daerah aluvial (Inseptisol) memiliki kandungan Mg dan C-organik lebih tinggi daripada tanah Ultisol dimana rata-rata kandungan Mg >18% dan C-Organik >14% serta memiliki kandungan Al dan Si lebih rendah, dimana Al <20% dan Si <25%. Untuk nilai C- Organik tanah inseptisol (aluvial) memiliki C-organik lebih tinggi (>14%) dan pH lebih rendah (<5) dibandingkan dengan tanah ultisol. Dari hasil pengujian kandungan tanah diharapkan pelaku pertanian pada daerah tersebut dapat mengetahui gambaran kandungan tanah dengan cara melakukan pencocokan pendekatan terhadap sampel tanah yang telah dilakukan pengujian pada penelitian ini.
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.
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.
IDENTIFICATION OF SITE CLASS USING MICROTREMOR HVSR MEASUREMENTS IN TANAH KAMPUNG DISTRICT Gemilang, Rio; Syawalia, Nurlaili; Resta, Ichy Lucya; Adhitya, Bagus; Efendi, Agustian; Sitompul, Jeremia; Rizky Marpaung, Ahmad; Setiawan, Rendy Agus
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 3 (2024): JOP (Journal Online of Physics) Vol 9 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i3.36098

Abstract

This research was conducted to determine the site class of the soil in the Tanah Kampung District in Sungai Penuh City. In this case, the method used is the HVSR microtremor method. HVSR is a method of comparing the spectrum of the horizontal component to the vertical component of a microtremor wave that recorded by seismograph. HVSR parameters were used to calculated shear wave velocity (Vs30) to defined site class. It reveals this areas classified in site class SC and SD. The area is predominantly composed of SD. This areas are characterized by soft sediments that require special handling if heavy infrastructure development is planned above them. This can be done by compacting the soil layers and mixing them with limestone.
Co-Authors -, Maison Adhitya, Bagus Afrianto, M Ficky Agus Kurniawan Mastur Airunisa, Airunisa Alrizal, Alrizal Amalina Fauziyah, Annisa Amelia Fitri Ramadhani Andriani, Aulia Anggia Harahap, Iryuvelamea Anggraeni, Rista Mutia Arie Satria Astuti, Putri Efendi, Agustian Ermadani Ermadani Fadlan Risky, Khoirul Faizar Farid Febri Berthalita Pujaningsih Fernando Mersa Putra Fitri Ramadhani, Amelia Frastica Deswardani Futra Kibayutullah Gemilang, Rio Hidaya, Rizky Husnul Hamdi Husnul Hamdi, Husnul ira kusuma dewi Juventa, Juventa Kibayutullah, Futra kusuma dewi, ira Lefdiana, Aura Lucky Zaehir Maulana M.Z, Nazri Madyawati Latief Mahardika, Rizky Maulina Tanjung Muhammad Yuwanda Musyarofah, Leni Nurli Mz, Nasri Nasri MZ Nasri MZ Ngatijo Ngatijo Novianda, Cici Nuklirullah, Nuklirullah Pebralia, Jesi Randa Pranata, Abimbi Riany, Hesti Rifqi Muhammad Rikaldo Pratama Rikaldo Pratama Riski Novrianti Rizky Mahardhika Rizky Marpaung, Ahmad Samsidar Samsidar Sarwo Sucitra Amin Satria, Arie Sefiyanti, Fani Setiawan, Rendy Agus Sitompul, Jeremia Situmorang, Salomo Syawalia, Nurlaili Wiratama, Jarot Wiwid Joni Yoza Fendriani Yulia Morsa Said Yurismawan, Yurismawan