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All Journal Jurnal Ilmu Fisika Indonesian Journal of International Law
Apriyanti, Nurul
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Astronomy Earth & Planetary Sciences Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Law Enforcement at Indonesian Waters: Bakamla vs. Sea and Coast Guard Puspitawati, Dhiana; Hadiyantina, Shinta; Susanto, Fransisca Ayulistya; Apriyanti, Nurul
Indonesian Journal of International Law
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.668 KB)

Abstract

This paper aims to analyze Indonesian laws regarding law enforcement in Indonesian waters. Specifically, it analyzes the authority of Badan Keamanan Laut (BAKAMLA) and Indonesian Sea and Coast Guard under the Indonesian Act Number 32 the Year 2014 on the Ocean Affairs Act and Indonesian Act Number 17 the Year 2008 on Navigation Act, respectively. It is argued that the state’s sovereignty over the ocean differs from the state’s sovereignty over the land territory. This is because according to the United Nations Convention on the Law of the Sea 1982 (UNCLOS 1982), the state’s ocean territory is divided into various maritime zones, over which different regimes applied. It is submitted that the farther ocean space is from the land territory, the sovereignty of the coastal state is lessened. Thus, different treatment, especially concerning law enforcement is needed this paper recommends a model for law enforcement at sea, which considers different regimes over different maritime zones as provided within the UNCLOS 1982. It is submitted that while it is fine to have more than one institution having the authority of law enforcement at sea, the extent of such authorization should be clarified.
Analysis of Earthquake Risk Estimation for Sustainable Development Using Microtremor Data Based on Vs30 Distribution: Comparative Study of DFA and Geopsy in Central Bengkulu, Indonesia Arya Putra Anggi; Refrizon, Refrizon; Harlianto, Budi; Apriyanti, Nurul; Saputri, Winda; Febriansyah, Gian Ori; Al-Ansory, Andre Rahmat; Raihana, Hana; Daniel, Adrian; Gumanty, Usman
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.214-228.2025

Abstract

This research was conducted in Pondok Kelapa Subdistrict, Central Bengkulu Regency, to analyze subsurface characteristics using microtremor data and the Horizontal-to-Vertical Spectral Ratio (HVSR) method. The research compared DFA (Diffuse Field Assumption) and Geopsy approach. In this study, 40 points were measured with a distance between points ranging from 200 to 300 meters. The data were processed using Terraware-HV and Geopsy software with a Monte Carlo approach to model the 3D subsurface structure. Results show that the dominant frequencies range from 0.64 to 8.19 Hz, with high amplification zones between 1.92 and 7.72 concentrated in areas of loose soil, indicating their high seismic susceptibility. Vs30 values range from 55 to 465 m/s, reflecting the dominance of soft to medium materials, such as clay, gravel, sand, and soft rock at specific depths. 3D modeling revealed a heterogeneous distribution of subsurface materials, with high amplification zones requiring special mitigation. This study provides important insights for seismic risk zoning, disaster mitigation, and earthquake-resistant structure design, and supports sustainable development planning in earthquake-prone areas. The results are expected to serve as a reference in spatial management based on earthquake risk mitigation.
Co-Authors Al-Ansory, Andre Rahmat Arya Putra Anggi Daniel, Adrian Dhiana Puspitawati Febriansyah, Gian Ori Gumanty, Usman Harlianto, Budi Raihana, Hana Refrizon Refrizon Saputri, Winda Shinta Hadiyantina Susanto, Fransisca Ayulistya