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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences JOURNAL ONLINE OF PHYSICS
Mohd Noh, Khairul Arifin
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Earth & Planetary Sciences Physics

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A Review: Modern Coral Characterization Studies in Malaysia Misman, Nurul Nadiah; Zakariah, Muhammad Noor Amin; Wan Saelan, Wan Nurzalia; Shaari, Hasrizal; Mohd Noh, Khairul Arifin
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.28.4.351-368

Abstract

Coral reefs are highly diverse and productive ecosystem in the ocean that provides various goods services to human and environment. Located within the renowned ‘Coral Triangle’ region, Malaysia is one the thriving countries in Southeast Asia that possess rich marine resources and coral reefs. Like other coral reef around the world, coral reefs in Malaysia are exposed to multiple threat that jeopardize their well-being. Those relying on these ecosystems may face severe consequences if they are lost. In recent decades, research on characterizing modern coral reefs has increased in Malaysia, including identifying key species and their distribution, understanding the factors that control coral growth and assessing the impacts of environmental stressors on reef health. This study is aimed to provide an overview of the current state of knowledge of modern coral characterization studies conducted in Malaysia. It presents the distribution maps of these coral reef studies conducted throughout Malaysia and discusses the techniques employed to characterize them. Most of the studies was conducted in South China Sea, particularly in East Coast of Peninsular Malaysia with Tioman Island, Pahang being identified as having the greatest number of studies. And, visual assessment have the higher frequency of use in characterizing Malaysia coral reef. Going forward, future studies in Malaysia should continue to explore others Malaysia reef, and techniques for characterizing coral reefs, while also conduct more studies in locations with limited research. These studies could have served as foundation resource for future conservation efforts in the face of ongoing threat and challenges.
DISTRIBUTED ACOUSTIC SENSING (DAS) FOR GEOTHERMAL EXPLORATION: A CASE STUDY OF THE KIZILDERE GEOTHERMAL FIELD Putra, Ahmad Dedi; Abdul Latiff, Abdul Halim; Mohd Noh, Khairul Arifin; Aparajita, Made Jnanaparama; Pascaloa, M. Rafif; Naufal, Harish Hartsa
JOURNAL ONLINE OF PHYSICS Vol. 11 No. 3 (2026): JOP (Journal Online of Physics) Vol 11 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v11i3.48530

Abstract

Geothermal resources have been popular around the world as a cleaner type of alternative energy source to hydrocarbons. Geothermal resources can be used for many purposes such as power generation, direct use, and more. In exploring geothermal resources, details and extensive investigations are required. Distributed acoustic sensing (DAS) is an advanced technology that is becoming more widely used in geoscientific studies, particularly for geothermal exploration. DAS records seismic signals using fiber optic cable instead of geophones, offering advantages over conventional methods in terms of cost, ease of deployment, and capability for continuous real-time monitoring. In this paper, we present a DAS data simulation to study the potential of DAS in geothermal exploration. This study involved several steps, including constructing a geological model based on the Kizildere Geothermal Field Model, simulating seismic data for DAS, and analyzing the DAS data in terms of signal quality and subsurface imaging resolution. The results demonstrated that DAS effectively imaged the subsurface and produced structural images comparable to those from geophones. Although DAS amplitudes are lower, the geological features remain clearly visible, suggesting that DAS is a viable and promising technology for geothermal exploration.  
Co-Authors Abdul Latiff, Abdul Halim Aparajita, Made Jnanaparama Misman, Nurul Nadiah Naufal, Harish Hartsa Pascaloa, M. Rafif Putra, Ahmad Dedi Shaari, Hasrizal Wan Saelan, Wan Nurzalia Zakariah, Muhammad Noor Amin