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Journal : Kappa Journal

Estimation Of Mangaan Carrier Rock Volume Using Geoelectric Method In Empol Sub-Village, West Lombok Regency Dieni Haryati Utami; Alfina Taurida Alaydrus; Suhayat Minardi
Kappa Journal Vol 4 No 2 (2020): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v4i2.2731

Abstract

The research has been done using geoelectric resistivity method to estimate the volume of Manganese (Mn)  carrier rock in Empol sub-village, Central Sekotong Village, West Lombok NTB. Measurements was conducted with the Wenner configuration using a Resistivity Meter G-Sound GL - 4100. Data was modeled and calculated using three software, there are Res2Dinv 3.5, Surfer 10, and Rockwork 15.  The rocks that regarded as carrier mangaan is pyrolusite manganese (Mn02). The description and distribution of MnO2 can be determined from the results of 2-dimension modeling using Res2Dinv. Mn02 was detected in  almost all resistivity line with value around 0,023  Wm up to 9,8  Wm.  From the 3-dimension visualization processed using RockWorks 15 software, we obtained volume of pirolusit about 38,199 m3 of area 160,000 m2 and 100 m of thickness.DOI: 10.29408/kpj.v4i2.2731
Penentuan Karakteristik Mekanisme Gempa Tahun 2018-2019 Di Nusa Tenggara Menggunakan Metode Inversi Momen Tensor Sri Rizki Eka Putri; Suhayat Minardi; Hiden Hiden
Kappa Journal Vol 5 No 1 (2021): Juni
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v5i1.3315

Abstract

Nusa Tenggara is one of the areas with a high level of seismic activity in Indonesia because this area is located between the Indian Ocean plate, which moves northward and pushes the Eurasian plate. One method that is often used to determine an earthquake's epicentre is the Tensor Moment Inversion method. This study aims to determine the moment tensor magnitude of each earthquake event and determine earthquake characteristics based on the earthquake focus mechanism in Nusa Tenggara from 2018 to 2019.  The earthquake with a magnitude of ≥ 5.7 SR and to find out the fault parameters, namely strike, dip, and rake using waveform data. One method that is often used to determine an earthquake's epicentre is the Tensor Moment Inversion method. The results showed that the fault planes formed were reverse faults and oblique faults. It has been calculated the moment tensor for each of the six components, namely Mxx, Myy, Mzz, Mxy, Myz and Mxz. From the results of the focal analysis of the 2018-2019 Nusa Tenggara earthquake mechanism, the values of the fault plane orientation parameters such as strike, dip and rake are obtained. For strikes in Nusa Tenggara on area 1, namely: 73° to 122°, Dip: 20° to 72° and Rake: 53° to 139°. While in field 2 for a strike, it is 232° to 280°, Dip 28° to 75°, Rake: 52° to 102°.
Identification Of Sediment Thickness Using The Geomagnet Method in Beleka and Dasan Tapen Villages, Gerung District, West Lombok Regency Putri, Izza Aulia; Minardi, Suhayat; Syamsuddin, Syamsuddin
Kappa Journal Vol 10 No 1 (2026): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v10i1.31890

Abstract

Gerung is one of the sub-districts in West Lombok Regency. Based on data from BNPB the Gerung sub-district area is an area that is vulnerable to the natural phenomenon of earthquakes, because the soil in this area has a softer texture so that when vibrations occur, the vibrations will be stronger. Geologically, this alluvium formation is very vulnerable to the natural phenomenon of earthquakes because it is related to the thickness of the sediment. This research aims to determine the thickness of sedimentary rocks in the Gerung District. One of the Geophysical Methods used in this research is the Geomagnetic Method. Based on the 2-Dimensional modeling of the AA' - FF' Incision, it consists of five rock layers, namely the first layer includes Silt Rock, the second layer includes Sand Rock, the third layer includes Clay, the fourth layer includes Breccia Rock and the fifth layer includes Lava Rock. The composition of the five rock layers, layers including sedimentary rock is found in the first layer to the fourth layer. The results of the research for sediment thickness from the six incisions ranged from 405 m – 485 m. Based on the results of this research, it can be concluded that Beleka Village and Dasan Tapen Village it is composed of five rock layers with a dominant sediment thickness of 485 m, namely at the AA' incision in the western part of Beleka Village
Co-Authors Adella Ulyandana Jayarti Adella Ulyandana Jayatri Adella Ulyandana Jayatri Adi Susilo Agus Naba Agus Wahid Ahmad Mudyanto Ahmad Rifaldi Arahman Akhmad Solikhin Al Fatari, Hotinul Al Hadi, Kasnawi Alaa, Siti Alfina Taurida Alaidrus Alfina Taurida Alaydrus Alhadi, Kasnawi Aminy, Ika Umratul Asni Aprianti, Nirmala Arif Budianto Arif Budiarto Ayu Mona Erisa Marpaung Baihaqi, Anas Bakti Sukrisna Bakti Sukrisna Bambang Sunardi, Bambang Budianto, Ari Daharta Dahrin Deni Hermansyah Dian Wijaya Kurniawidi Dieni Haryati Utami Elinda, Baiq Ulfa Putri Fidya, Karina Alma Handayana, I Gusti Ngurah Yudi Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden Hiden I Wayan Sudiarta Ika Umratul Asni Aminy Ika Umratul Asni Aminy Inayah, Rahmatun Indra Arifianto Istiqomah, Melinda Utami Izyatin, Nazla Jayatri, Adella Ulyandana Karmila Cahya Putri Kasnawi Al Hadi Kormil Saputra Kormil Saputra Laela Zulfawati Laili Mardiana Lalu Sahrul Hudha Lestari, Vista Ayu Lily Syahana Rahim Mahmud Yusuf Marzuki Marzuki Marzuki Marzuki Muh Sarkowi Muhammad Amin Muhammad Jarul Rozki Nazla Izyatin Nela Ranita Amanda Nurcahaya, Nurcahaya Nurul Qomariyah NURUL QOMARIYAH Nurul Qomariyah Nurul Qomariyah Pratama, Muhammad Andika Putri, Izza Aulia Rahadi Wirawan Rahmatullah, Ovan Rahmatun Inayah Rahmatun Inayah Ramadian Ridho Illahi Rima Yudiana Satriawan Satriawan, Satriawan Siti Alaa’ Siti Azizah Sri Rizki Eka Putri Sukrisna, Bakti Susi Rahayu Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Teguh Ardianto, Teguh Teguh Rifandi Teti Zubaidah Wardani, Aulia Fatma Wazni, Haerul Wibowo, Rahmat Catur Wijaya, Roviq Wirawan, Rahadi Zulfatiha, Septhia Salwa Zulfawati, Laela Zyiadatun Adawiah