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All Journal Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Amri, Afdhal
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Engineering Environmental Science Medicine & Pharmacology Social Sciences Transportation Other

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Designing the Layout of Offshore Protection Structures at Tugu Beach, Air Bangis (Indonesia) using Numerical Simulation Amri, Afdhal; Mera, Mas
Jurnal Teknik Sipil dan Lingkungan Vol. 10 No. 2: October 2025
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.10.2.397-408

Abstract

Tugu Air Bangis Beach, located in West Pasaman Regency, has experienced severe coastal erosion caused by wave energy from the Indian Ocean. This condition has resulted in the collapse of several structures along the shoreline and threatens the remaining coastal infrastructure. Mitigation measures are therefore required to maintain shoreline stability and prevent further damage. This study aims to design the layout of coastal protection structures for Tugu Air Bangis Beach using numerical simulations to reduce the impact of wave- and current-induced erosion. The data used in this study include satellite imagery, wind data, tidal elevation data, Digital Elevation Model (DEM) data, and aerial photographs. Tidal flooding (rob) occurred in Padang City and Air Bangis from December 3 to 5, 2021, and the tidal elevation data used for the simulation were obtained from real-time measurements recorded at the Teluk Bayur Station, Padang, between December 1 and 9, 2021. Numerical simulations were performed using the CMS-Wave and CMS-Flow modules in the Surface Water Modelling System (SMS) version 10.1. The simulations were conducted in two stages. The first stage employed the existing structure layout, simulated for 216 hours of model time (equivalent to 36 hours of computer running time). The results indicated that the incoming waves approach the shoreline perpendicularly, suggesting that a breakwater is the most appropriate coastal protection structure. In the second stage, two breakwaters of equal length (200 meters each) and equal distance from the original shoreline (100 meters) were added. The numerical model results showed that this configuration effectively mitigates erosion, as indicated by sediment accumulation along several shoreline segments and the initial formation of a tombolo behind the breakwaters.
Integrated Forensic Training Program for Indonesian National Police Investigators in West Java Region Amri, Afdhal; Harun, Rahmah; Rahmad
Warta Pengabdian Andalas Vol 33 No 1 (2026)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.33.1.105-112.2026

Abstract

The increasing complexity of criminal cases in West Java necessitates a critical upgrade in the competency of Indonesian National Police (Polri) investigators regarding the application of Scientific Crime Investigation (SCI) principles. A significant gap has been identified in the integrated forensic evidence handling skills (digital, biological, and chemical) at the Sub-Regional Police Resort (Polres) level, potentially compromising the accountability of criminal proceedings. This training program aimed to enhance the capacity of 40 investigators from the Jabar region through a comprehensive, integrated forensic training course. The 5-day program (September 15-19, 2025) was conducted in collaboration with the National Police's Forensic Laboratory Center (Puslabfor Bareskrim Polri), utilizing a Pretest-Posttest design and a hands-on simulation methodology. Evaluation results demonstrated an average competency score increase of 48.57% (from 55.8 to 82.9), significantly exceeding the minimum target of 25%. The most drastic improvement was observed in the Digital Forensics module (79.57%). Practically, 92.5% of participants showed enhanced technical proficiency in applying the integrated Chain of Custody (CoC) protocol. The participant satisfaction level reached 94% (4.7 out of 5.0). This training proved highly effective in bridging the competency gap, strengthening science-based investigative administration, and supporting the establishment of an accountable criminal justice system. The adoption of technical guidelines and the implementation of a sustained program are recommended for follow-up.
Co-Authors Akhirman, Akhirman Harianja, Loly Marlina Harun, Rahmah Mas Mera Prameswari, Nola Putri, Wulan Nuzulia Rahmad Rizki, Chintya Vauzia, Vauzia zahrani, Arum