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All Journal Civil and Environmental Science Journal (CIVENSE) Indonesian Community Journal
Muhammad Rizki Saleh
Institut Teknologi Sumatera, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Engineering Environmental Science Public Health Social Sciences Other

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Multibeam Echosounder Data Analysis Using Object Based Interpretation Criteria for Subsea Pipeline Detection: A Case Study in Bawean Sea, East Java Saleh, Muhammad Rizki; Wiryawan, Ainun Pujo; Fuad, Mochammad Arif Zainul
Civil and Environmental Science Journal (CIVENSE) Vol. 8 No. 1 (2025)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2024.008.01.8

Abstract

Subsea pipelines are critical in supporting offshore oil and gas activities, yet they are vulnerable to hazards such as leaks caused by navigation activities. Regular monitoring is essential to reduce associated risks, and multibeam echosounder (MBES) data offer a promising solution for identifying subsea infrastructure. This research presents an object-based interpretation approach for detecting subsea pipelines using MBES data, incorporating interpretation elements such as tone and color, texture, shape, pattern, size, shadow, and site. The research was conducted in the Bawean Sea, East Java, using raw MBES data, vessel offsets, patch test calibration, a sound velocity profiler (SVP), and tidal data. The seafloor topography in the study area is generally flat, ranging from 52.5 to 60.2 meters in depth. Six subsea pipeline objects were identified based on their linear pattern, shallow placement, consistent shape, and spatial context. However, the absence of visible shadow elements—possibly due to sonar resolution, depth, or beam angle limitations—represents a methodological constraint. The study points out the advantages of MBES data combined with object interpretation criteria for non-invasive and efficient subsea pipeline monitoring.
Pemberdayaan Ekosistem Pesisir melalui Aksi Penanaman Mangrove untuk Pulau Pahawang Muhammad Rizki Saleh; Mustarakh Gelfi; Maria Yosephine Simbolon; Nafisa Nandalianadhira; Nalendra Jagat Lumintang; Muhammad Mahendra Poetra Praja
I-Com: Indonesian Community Journal Vol 5 No 1 (2025): I-Com: Indonesian Community Journal (Maret 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/icom.v5i1.6778

Abstract

Pahawang Island is a smallest island designated for marine tourism, providing activities such as snorkeling, sunset and sunrise observation, and mangrove ecotourism in Pesawaran Regency, Lampung Province. The complexity of physical dynamics, paired with human activity, makes Pahawang vulnerable with several coastal issues such as erosion. One of a possible approach for preventing erosion on Pahawang Island is constructing natural coastal defenses by preserving the mangrove habitat along the shoreline. The community service aims to rehabilitate the mangrove ecosystem through mangrove planting activities. The method used in this community service is community empowerment through coordination and interviews with local village officials to assess the environmental conditions and identify planting locations, followed by the planting of mangrove seedlings from Rhizophora sp. species. Considering with ideal planting distance of 1 × 1 meter, approximately 100 mangrove seedlings were successfully planted within an area estimated to be 150 m². However, to ensure the long-term growth success of the planted mangroves, further monitoring and evaluation in the field are necessary.
Co-Authors Fuad, Mochammad Arif Zainul Gelfi, Mustarakh Maria Yosephine Simbolon Muhammad Mahendra Poetra Praja Nafisa Nandalianadhira Nalendra Jagat Lumintang Wiryawan, Ainun Pujo