Marine

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Heavy metal concentrations in coastal seawater and sediments off Prai Industrial Estate, Penang, Malaysia
(Pergamon Press Ltd, 1987) CE Seng; PE Lim; TT Ang
In view of the importance of the Juru estuary and its surrounding coastal area to the aquaculture activities, the discharge of industrial effluents and, as a result, the addition of heavy metals into these areas have been examined. Six sampling sites were chosen along marine coastal areas
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Hydrocarbons in seawater and sediment from the west coast of Peninsular Malaysia
(Springer, 1994) A. R. Abdullah; N. M. Tahir; L. K. Wei
The present study was undertaken to determine the levels of hydrocarbons in water and sediments along the near-coastal areas of the Straits of Malacca.
Open Access
Maritime circulation of the South China Sea: A numerical study
(Universiti Pertanian Malaysia Press, 1996) Alejandro Camerlengo; Monica Ines Demmler
A numerical model employing the classic hydrodynamic equations of conservation of mass and momentum, vertically integrated, has been developed. The model solves the external, or barotropic, mode. The computational mode is eliminated by employing a Euler backward scheme at every N (odd) time level. A similar model is used for issuing flood warnings of hurricanes and extratropical storms. This type of model is also used in a variety of situations such as oil spill simulations, storm surges, tsunamis, and tidal simulations. The aim of this investigation is to gain some insight into the circulation of the South China Sea during the N E and S W monsoon seasons.
Open Access
Surface circulation off Kuala Terengganu in the transitional period between the northeast and southwest monsoons
(Universiti Pertanian Malaysia Press, 1996) Mohd. Nasir Saadon; Meged Mahmoud Marghany
The aim of this investigation is to understand the surface current circulation pattern off Kuala Terengganu. A drifting drogue was used to measure surface current during April 1993, the transitional period between the northeast and southwest monsoon seasons.
Open Access
Impact modeling of sewage discharge from Georgetown of Penang, Malaysia on coastal water quality
(Kluwer Academic Publishers, 1997) Hock Lye Koh; Poh Eng Lim; Hooi Ling Lee
Currently about 200,000 persons of the Penang Georgetown population is served by a sewerage system which conveys the raw sewage to an open channel flume in Jelutong for discharge into the Western Channel. This has resulted in the degradation of coastal water quality in the affected areas. Therefore, there exists an urgent need to look for other alternatives for sewage treatment and disposal. This paper presents the results of computer simulations on the impacts of sewage discharge on Penang coastal waters under two treatment and disposal options.
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Determination of total hydrocarbon concentration in coastal waters and sediments off the east coast of Peninsular Malaysia
(Chapman & Hall, 1997) Norhayati Mohd. Tahir; A.R. Abdullah; S. Shanmugam
To determine the level of total hydrocarbon concentrations (THCs) along the eastern coastal regions of Peninsular Malaysia, samples of subsurface seawater (1 m) and surface sediments were collected from several sampling stations between June and August 1993.
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The GEF/UNDP/IMO Malacca Straits Demonstration Project: Sources of Pollution
(Elsevier, 1999) ABDUL RANI ABDULLAH; NORHAYATI MOHD. TAHIR; TONG SOO LOONG; TAFAZZAL MOHD. HOQUE; ABDUL HALIM SULAIMAN
The Straits of Malacca is subjected to a great variety of environmental stresses due to its strategic location as a major international shipping lane and the concentration of agriculture, industry and urbanisation which predominate on the west coast of Peninsular Malaysia. This paper gives an overview of the study conducted in the Malacca Straits as part of the GEF/UNDP/IMO Regional Programme on the Prevention and Management of Marine Pollution in the East Asian Seas, in particular pertaining to the identification of land and sea-based sources of pollution in Malaysia which contributes to the pollution load in the Straits, as well as the assessment of the relative contribution of each source.
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Perubahan nutrien mengikut kedalaman di muara-muara sungai dan luar pantai, perairan Pantai Barat, Sabah
(Universiti Malaysia Sabah, 2000) Abentin E.; A. Anton; Ridzwan A.R.
Kajian dilakukan di 17 muara sungai dan 16 kawasan luar pantai (1-3 kilometer daripada muara) perairan Pantai Barat Sabah. Tujuan kajian adalah untuk mengetauai perubahan kepekatan nutrien mengikut kedalaman.
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Azimuth cut-off model for significant wave height investigation along coastal water of Kuala Terengganu, Malaysia
(Elsevier, 2002) Maged Marghany; Zelina Ibrahim; Johan Van Genderen
The present work is used to operationalize the azimuth cut-off concept in the study of significant wave height. Three ERS-1 images have been used along the coastal waters of Terengganu, Malaysia. The quasi-linear transform was applied to map the SAR wave spectra into real ocean wave spectra. The azimuth cut-off was then used to model the significant wave height.
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Numerical Simulation of Tidal Flooding over Mangrove Swamps
(Universiti Malaysia Sabah, 2006) Shahbudin Saad; Mohd. Lokman Husain; Toshiyuki Asano
Tidal flooding over mangrove swamps is subject to the drag resistance produced by mangrove roots, fallen branches, seedlings and mangrove bed conditions. A numerical study has been carried out to simulate the tidal flow over mangrove swamps in an estuarine mangrove, Kemaman Terengganu. This study aims to understand the characteristics of tidal level variations and velocity fields under the influence of the complex morphology and densely mangrove roots system.
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Crystalline style and tissue redistribution in Perna viridis as indicators of Cu and Pb bioavailabilities and contamination in coastal waters
(Elsevier, 2006) C.K. Yap; A. Ismail; W.H. Cheng; S.G. Tan
The concentrations of Cu, Pb, and Zn in the crystalline style (CS) and in the remaining soft tissues (ST) of the green-lipped mussel Perna viridis from 10 geographical sites along the coastal waters off peninsular Malaysia were determined. The CS, compared with the remaining ST, accumulated higher levels of Cu in both contaminated and uncontaminated samples, indicating that the style has a higher affinity for the essential Cu to bind with metallothioneins. The similar pattern of Cu accumulation in the different ST of mussels collected from clean and Cu-contaminated sites indicated that the detoxification capacity of the metallothioneins had not been overloaded. For Pb, higher levels of the metal in the CS than in the remaining ST were found only in mussels collected from a contaminated site at Kg. Pasir Puteh.
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Distribution of polycyclic aromatic hydrocarbons (PAHs) found in water along the Northern Straits of Malacca
(Universiti Malaya, 2008) Richard C.S. Wong; Meng Lai Liew; Chun Foong Chan
Marine water samples were collected during the SESMA I expedition along the northern Straits of Malacca. The route encompassed the Klang islands, the estuaries of the Selangor, Bernam and Perak rivers, Pulau Sembilan, Pulau Jarak, the estuaries of the Dinding, Matang and Gula rivers, southern Penang and Pulau Perak. Samples were collected from the surface to 1.5-2.0 m depth from a total of 18 stations located along the straits. The samples were analyzed for concentrations of a range of persistent organic polycyclic aromatics hydrocarbons
Open Access
Nearshore and offshore comparison of marine water quality variables measured during SESMA 1
(Universiti Malaya, 2008) Chui Wei Bong; Choon Weng Lee
Total suspended solids (TSS), dissolved oxygen (DO) and dissolved inorganic nutrient concentrations [ammonium (NH4), nitrite (NO2), nitrate (NO3), phosphorus (PO4) and silicate (SiO4)] were measured in offshore sites covered by the first Scientific Expedition to the Straits of Malacca or SESMA 1 cruise. Both TSS and DO showed striking differences between nearshore and offshore sites.
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Interspecific Variation of Heavy Metal Concentrations in the Different Parts of Tropical Intertidal Bivalves
(Springer, 2009) Franklin Berandah Edward; Chee Kong Yap; Ahmad Ismail; Soon Guan Tan
The heavy metals in the total tissues and the different soft tissues of the bivalves were compared with the maximum permissible limits set by five different countries. From the comparison, it was found that most of the bivalves contained metal concentrations which were below the maximum permissible limits and should pose no toxicological risk to consumers.
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The Development of Hybrid Integrated Renewable Energy System (Wind and Solar) for Sustainable Living at Perhentian Island, Malaysia
(Social Sciences Research Platform (SSRP), 2009) Zuhairuse Md Darus; Nor Atikah Hashim; Siti Nurhidayah Abdul Manan; Mohd Azhar Abdul Rahman; Khairul Nizam Abdul Maulud; Othman Abdul Karim
Aware at the potential of the harvesting the wind energy, Malaysian Government under Joint venture partnership with the State Government of Terengganu and National Electric Board in 2007 embark on the project of integrating power supply at Pulau Perhentian (Perhentian Island). The project consists of installing two wind turbine, solar farm (Solar Panel), Generator and battery. This paper will encompass on the hybrid system implemented at the Perhentian Island, Malaysia.
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Sediment transport and morphodynamics of the tidal inlet and adjacent coastlines of Salut-Mengkabong Lagoon, Sabah, Malaysia
(Coastal Education & Research Foundation, Inc., 2009) M.A. Hoqueft; B.G. Ahadf; E. Saleh
Salut-Mengabong lagoon is located at the west coast of Sabah facing the South China Sea. Substantial erosion of nearby coastal cliff and associated longshore sediment transport toward the inlets of this lagoon received considerable attention for the stability of the inlet and nearby infrastructures. This paper covers a primary study of water current and suspended sediment flux across the inlet; wave energy, longshore transport and associated morphodynamics changes of adjacent shorelines.
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Analyzing the East Coast Malaysia Wind Speed Data
(International Energy and Environment Foundation (IEEF), 2009) Siti Khadijah Najid; Azami Zaharim; Ahmad Mahir Razali; Mohd Said Zainol; Kamarulzaman Ibrahim; Kamaruzzaman Sopian
Recently, wind energy conversion is also given a serious consideration in Malaysia. Since Malaysia lies in the equatorial region and its climate is governed by the monsoons, the potential for wind energy generation in Malaysia is very much depends on the availability of the wind resource that varies with specific location. In the present study, the wind energy potential of the location is statistically analyzed based on wind speed data, measured over two years period. The probability distributions are derived from the wind speed data and their distributional parameters are identified. Three types of probability distributions have been used to estimate the wind energy potential in Kuala Terengganu, east Malaysia.
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Surfactants in the sea-surface microlayer and their contribution to atmospheric aerosols around coastal areas of the Malaysian peninsula
(Elsevier, 2010) Razarul Naim Roslan; Norfazrin Mohd Hanif; Mohamed Rozali Othman; Wan Nurul Farah Wan Azmi; Xan Xue Yan; Masni Mohd Ali; Che Abd Rahim Mohamed; Mohd Talib Latif
A study was done to determine the concentrations of surfactants on the sea-surface microlayer and in atmospheric aerosols in several coastal areas around the Malaysian peninsula. The concentrations of surfactants from the sea-surface microlayer (collected using rotation drum) and from aerosols (collected using HVS) were analyzed as methylene blue active substances and disulphine blue active substances through the colorimetric method using a UV-vis spectrophotometer.
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The history of petroleum pollution in Malaysia; urgent need for integrated prevention approach
(Thai Society of Higher Education Institutes on Environment, 2010) Mahyar Sakari; Mohamad Pauzi Zakaria; Che Abd Rahim Mohamed; Nordin Haji Lajis; Kuhan Chandru; Pourya Shahpoury Bahry; Mohammadreza Mohammad Shafiee; Sofia Anita
Petroleum pollution is known as point and non-point source of contaminations in the environment. A major class of petroleum contaminant is groups of compounds consist of two or more fused benzene rings called polycyclic aromatic hydrocarbons (PAHs) that are carcinogenic, mutagenic and toxic. Source identification of petroleum pollution is necessary to prevent pollution entry into the environment. Eight sedimentary cores were obtained from developed and developing areas around Peninsular Malaysia to investigate the historical profile of PAHs, their characteristics and its possible origins.
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Imposex in Thais gradata as a Biomarker for TBT Contamination on the Southern Coast of Peninsular Malaysia
(Springer, 2010) Ferdaus Mohamat-Yusuff; Syaizwan Zahmir Zulkifli; Ahmad Ismail; Hiroya Harino; Mohd Kamil Yusoff; Takaomi Arai
Thais gradata samples were collected from six locations along the southern shores of Peninsular Malaysia and analyzed for imposex incidence and organotin (butyltins (BTs), including tributyltin, dibutyltin, and monobutyltin, and phenyltins (PTs), including triphenyltin, diphenyltin, and monophenyltin concentrations), in tissue burden.