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All Journal POSITRON Jurnal Fisika Unand Jurnal Kolaboratif Sains Cakrawala Socius: Social Sciences Research Journal
Bustari, Ahdian Azri
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Kajian Seismisitas dan Energi Gempabumi Sesar Naik Busur Belakang Flores di Segmen Utara Pulau Lombok Berdasarkan Data Kegempaan 2013-2023: Seismicity and Earthquake Energy Study of Flores Back Arc Thrust in North Segment of Lombok Island Based on Earthquake Data from 2013-2023 Bustari, Ahdian Azri
Jurnal Kolaboratif Sains Vol. 7 No. 7: July 2024
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/jks.v7i7.5475

Abstract

Sesar Naik Busur Belakang Flores Segmen Utara merupakan sesar yang seringkali menjadi sumber gempabumi untuk wilayah Pulau Lombok. Rangkaian gempa besar yang menguncangkan Pulau Lombok pada Juli s.d. Agustus 2018 menjadi salah satu contoh dari tingginya aktivitas seismik dari sesar ini yang mengakibatkan lebih dari 500 korban jiwa. Berdasrakan hal tersebut, penelitian ini bertujuan untuk mengkaji seismisitas dan energi gempabumi dari Sesar Naik Flores terkhusus di Segmen Utara Pulau Lombok. Data kegempaan yang digunakan berasal dari USGS dari 2013 s.d. 2023 dan batas area penelian adalah -7,515° s.d. -8.357° LS dan 115,845° s.d. 116,867° BT, serta magnitudo lebih dari 4. Hasil kajian seismisitas menunjukkan bahwa sebaran episenter gempa sebagian besar berada di selatan wilayah sesar dan nilai b-Value di angka 0,903. Sementara itu, hasil kajian energi gempabumi menunjukkan energi gempabumi yang dihasilkan berkisar antara 3,2 x 108 s.d. 4,8 x 1014 Joule dengan lepasan energi gempabumi terbanyak terjadi pada tahun 2018 sebanyak 1.1 x 1015 Joule.
Lithological Interpretation of Landslide Zone of Arjuna Road Kalongan Village East Ungaran Use Geomagnetic Method Bustari, Ahdian Azri; Andi, Andi; Wibowo, Nugroho Budi; Niyartama, Thaqibul Fikri
POSITRON Vol 14, No 2 (2024): Vol. 14 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i2.75655

Abstract

Arjuna Road in Kalongan Village, East Ungaran, which connects Semarang Regency with Demak Regency, has been cut off due to a landslide. Lithology as an internal controlling factor of landslide occurrence is important to be investigated. Research on the disaster has been conducted to determine the magnetic field anomaly and to interpret subsurface lithology using the geomagnetic method. The research was conducted on the landslide zone at Arjuna Road and its surrounding area using the geomagnetic method with looping data acquisition. The research area includes residential areas and plantation areas of residents with a research area of 1.3 × 0.8 km2 with a total of 104 measurement points. Through the results and analysis of the research, it can be determined that the magnetic field anomalies in the research area range from 17.1 - 882.2 nT where the landslide zone dominantly has a high anomaly indicating the closer the area is to bedrock, and for residential areas and local plantations, the magnetic field anomalies vary from low to high depending on the topography and sediment thickness in the area. In addition, the subsurface lithology in the study area consists of clay soil, claystone, tuff, and volcanic breccia. The impermeable nature of the tuff and the water-low permeable clay soil causes the boundary between the clay soil and tuff layers to become slippery when water seepage occurs, resulting the landslides.
Pemetaan sebaran nilai Vs30, faktor amplifikasi tanah, dan peak ground acceleration wilayah Bantul Timur Bustari, Ahdian Azri; Wibowo, Nugroho Budi
Cakrawala Vol 1, No 2 (2022): Desember
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/cakrawala.v1i2.1436

Abstract

Telah dilakukan penelitian mengenai pemetaan sebaran nilai Vs30, faktor amplifikasi tanah, dan peak ground acceleration (PGA) di wilayah Bantul Timur dengan daerah kajian berada pada koordinat -7.9083496664 s/d -7.9667413705 LS dan 110.3772617315 s/d 110.4509050001 BT. Penelitian ini bertujuan untuk menganalisis dan memetakan sebaran nilai Vs30, site class, faktor amplifikasi tanah, PGA batuan dasar, dan PGA permukaan di wilayah Bantul Timur. Metode yang dilakukan dalam penelitian ialah menggunakan metode pengolahan data sekunder yang bersumber dari Peta Geologi Lembar Yogyakarta, USGS, DEMNAS, dan Data RSA Desain Spektra Indonesia Kementerian PUPR dengan software Surfer dan Global Mapper untuk menghasilkan peta. Hasil dari penelitian ialah berhasil dibuatnya peta sebaran nilai Vs30 dan site class dengan rentang nilai dari 240 – 750  m/s dan klasifikasi tanah sedang serta tanah sangat padat dan batuan lunak, peta faktor amplifikasi tanah dengan rentang nilai 1.5 – 4 s, peta PGA batuan dasar dengan rentang 0.586 – 0.634 g, dan peta PGA permukaan dengan rentang nilai 0.9 – 2.4 g.
Pemodelan Peak Ground Accleration (PGA) dan Intensitas Gempabumi berdasarkan Pengukuran Mikrotremor pada Kawasan Longsor di Desa Kalongan, Ungaran Timur Wibowo, Nugroho Budi; Niyartama, Thaqibul Fikri; Andi, Andi; Septiana, Rena; Widianingrum, Erlina; Bustari, Ahdian Azri; Arif, Iktifal Ajie
Jurnal Fisika Unand Vol 13 No 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.2.225-233.2024

Abstract

The landslide in Kalongan Village affected an area of 5 hectares and has the potential to experience further landslides. Landslides can occur with triggers of external factors such as earthquakes. The Peak Ground Acceleration (PGA) parameter can represent the impacts that occur on the surface in the form of earthquake intensity (MMI). Kalongan Village is 25.5km from the epicenter of the Ambarawa earthquake on 27 May 2023. This study aims to modeling the PGA microzonation and the intensity of the Ambarawa earthquake in the avalanche zone in Kalongan Village. The PGA model is based on measurements of 72 microtremor data in the avalanche zone using the Kanai method. Parameters of the Ambarawa earthquake with a magnitude of 2.5 and a depth of 5 km. The results of PGA modeling in the avalanche zone varied between 1.0-7.1 gal or I-II MMI values. The results of the PGA modeling show that aftershocks can occur if the strength of the Ambarawa earthquake reaches M=4 or 7.1-50.8 gal. The strength of the earthquake is equivalent to the intensity of II-V MMI.
An Academic Representation of the Use of Search-and-Rescue (SAR) Robots in Post-Earthquake Japan as Depicted in the Anime Tokyo Magnitude 8.0 Bustari, Ahdian Azri
Socius: Jurnal Penelitian Ilmu-Ilmu Sosial Vol 3, No 4 (2025): November
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.17646559

Abstract

Research with the aim of analyzing the representation of the use of SAR robots after the earthquake disaster in Japan in the anime Tokyo Magnitude 8.0 has been conducted. This research uses a descriptive qualitative approach with Peirce's semiotic analysis method. The results show that there are seven scenes in the anime Tokyo Magnitude 8.0 that contain two types of robots, namely Resukyū Robō and Semi-autonomous Robot. Specifically, three of the seven scenes depict the direct representation of the use of SAR robots after the earthquake disaster in Japan as search and rescue robots for evacuating victims. Meanwhile, the other four scenes are supporting scenes that also discuss SAR robots. Further analysis shows that Resukyū Robō is used as a rescue robot, while Semi-autonomous Robot is used more as a search robot. Although they have different functions, these two types of robots support each other in the evacuation of victims after a disaster.
Co-Authors Andi Andi Andi Andi Arif, Iktifal Ajie Nugroho Budi Wibowo Septiana, Rena Thaqibul Fikri Niyartama Thaqibul Fikri Niyartama Widianingrum, Erlina