This study aims to analyze the level of earthquake susceptibility in Ogan Komering Ulu (OKU) Regency through the integration of geological structure parameters and seismic microzonation. Indonesia is a region with a high level of earthquake hazard due to its location at the convergence of several active tectonic plates. Although OKU is not directly located along a major fault line, the area sti…
Mukomuko Regency is a west coastal area of Sumatra Island which is vulnerable to earthquakes. So, when planning building construction, must pay attention to the potential for earthquakes. In this study, seismic hazard analysis in Mukomuko Regency was carried out using the PSHA and DSHA methods. Probability calculations using the USGS-PSHA 2007 program for a return period of 500 years, the proba…
Penelitian ini bertujuan untuk mengidentifikasi sebaran reservoir batupasir dan menentukan zona target sumur baru pada Lapangan “X”, Formasi Talang Akar, Cekungan Sumatera Selatan, melalui analisis atribut seismik Root Mean Square (RMS) amplitudo dan peta struktur waktu. Data yang digunakan meliputi data seismik 3D, data sumur EP-15, log sumur, dan checkshot, yang diolah menggunakan perangk…
Pulau Sumalcra merupakan daerah yang rawan terjadi gempa bumi. Untuk mengetahui faktor penyebab dan pola kecenderungan terjadinya gempa bumi di Pulau Sumatera dapat digambarkan dengan interpretasi langsung melalui metode plot episenter dan analisis trend frekuensinya. Daerah studi penelitian ini sendiri meliputi batasan wilayah 5° LS - 10° LU dan 90° BT - 105° BT. Berdasarkan data historis …
Research has been conducted on Coulomb Stress Change to determine the distribution of stress of the Padang earthquake on 30 September 2009 M7.6 and Padang Panjang on 6 March 2007 M6.3 and M6.4. The data in this study were taken from the Global CMT website in accordance with the coordinates of the earthquake point with the analysis method using the Coulomb stress method. The results of the Padan…
Secara umum, dalam perencanaan infrastruktur tahan gempa, terdapat beberapa jenis metoda analisis dengan tingkat kesulitan dan akurasi yang bervariasi. Sesuai dengan metoda analisis yang digunakan, parameter pergerakan tanah yang diperlukan untuk perhitungan dapat diwakili oleh percepatan tanah maksimum, respon spektra gempa, dan riwayat waktu percepatan gempa (time histories). Percepatan tanah…
Earthquake precursors using the earth's magnetic data by analyzing Ultra Low Frequency (ULF) emission anomalies is one of the earthquake disaster mitigation efforts. This study uses 11 earthquake data in the Province of West Sumatra and its surroundings in 2021 with coordinates (3.50ºLS-1.20ºN and 98.10º-102.10ºE). This study was conducted to determine Ultra Low Frequency (ULF) emission ano…
The research was conducted in Muba and its surroundings, South Sumatra. This area is included in the back arc basin which is not uncommon for geological disasters, one of which is an earthquake. The aim of this research is to identify the tectonic activity of the geological structure path associated with landform factors and to analyze the morphometric analysis of the drainage basin. The method…
The West Sumatra region is an active area of earthquake which is the result of the subduction of the Indo-Australian Plate with the Eurasian Plate. Precise hypocenter analysis is needed to understand about the accurate tectonic setting such as subduction zone in the area. To produce a more accurate hypocenter this hypocenter relocation is used to recalculate earthquake hypocenter by using the m…
It is a comprehensive and well illustrated textbook on all aspects of tsunami. I don't think there is any other book on the topic published. As one bookseller said after the Indian Ocean tsunami event, "I would have just filled my front window with copies and they would have walked out the store." This statement was just as relevant after the Japanese tsunami of 2011 and will be as relevant whe…
With increased climate variability, aggravated natural hazards in the form of extreme events are affecting the lives and livelihoods of many people. This work serves as a basis for formulating a ‘preparedness plan’ to ensure the effective policy formulation for planned development. Increased demand and competition with a high degree of variability have forced people to struggle in order to …
The Tohoku earthquake on March 11, 2011, officially designated the “Off the Pacific Coast of Tohoku, Japan Earthquake” by the Japan Meteorological Agency caused an unprecedentedly severe disaster in the northeastern part (Tohoku) of the Japanese island of Honshu. This first volume of the series Natural Disaster Science and Mitigation Engineering: DPRI Reports covers various aspects of inves…
Pseudo-static analysis is still the most-used method to assess the stability of geotechnical systems that are exposed to earthquake forces. However, this method does not provide any information about the deformations and permanent displacements induced by seismic activity. Moreover, it is questionable to use this approach when geotechnical systems are affected by frequent and rare seismic event…
This book is a collective effort by world experts, bringing together assorted contributions presented during the Ocean Science Session OS-017, of the AOGS-AGU Joint Assembly held in Singapore in 2012 (the Asia Tsunami and Great East Japan Earthquake and Tsunami events) and other conferences. The chapters cover assessment, evaluation, forecast, policy and lessons learned as well as environmenta…
Seismic tomography was applied to estimate subsurface structures West Sumatera. Based on anomalies of P- dan S-wave velocity (Vp and Vs) and Vp-Vs ratio. Earthquake data were downloaded from ISC (International Seismological Center) website from January 1, 1900 to August 31, 2021. Earthquake events with a minimum of 3 phase were selected for tomography input. Seismic velocity models and source p…
Penelitian ini bertujuan untuk mengetahui nilai Peak Ground Acceleration (PGA) di batuan dasar yang lebih spesifik untuk wilayah Kerinci dan Sungai Penuh. Analisis PGA menggunakan metode Probabilistic Seismic Hazard Analysis (PSHA) dan metode Deterministic Seismic Hazard Analysis (DSHA). Penelitian ini menggunakan data historis gempabumi dari International Seismological Center (ISC) sejak tahun…
Mentawai Achipelago is part of Sumatra Island which has two geological conditions to plate tectonic order. First, the Indo-Australian plate plunges into the Eurasian plate. Second, there is a Sumatran fault zone which is usually called Sesar Semangko or Sumatran Fault Zone (SFZ). Located between the subduction zone and the Mentawai Achipelago fault that cause earthquake activity. This study aim…
Research on the relocation of an earthquake hypocenter using the Double-Difference method has been carried out with a 2015-2019 earthquake case study in Bengkulu Province. The purpose of this study was to determine the change in the position of the earthquake hypocenter before and after relocation using the Double-Difference method, then to determine the RMS (Root Mean Square) value of the resi…
Kota Bengkulu merupakan salah satu deretan kota di Indonesia yang masuk ke dalam daftar daerah rawan bencana gempa bumi di Indonesia. Dengan melihat kondisi ini maka kota Bengkulu sudah sangat memerlukan sistem mitigasi bencana untuk memperkecil dan memberikan pengetahuan kepada masyarakat kota Bengkulu. BPBD kota Bengkulu merupakan dinas yang dibentuk pemerintah untuk bertugas dalam melak…