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Title:	Variasi musiman sebaran plum Sungai Pahang
Authors:	Taherah Mohd. Taher (P68209)
Supervisor:	Dr. Tukimat Lihan
Keywords:	Plum sungai Sungai Pahang Organisma marin Dissertations, Academic -- Malaysia
Issue Date:	2-Mar-2015
Description:	Plum sungai yang mengandungi pepejal terampai boleh tersebar ke pelbagai arah kesan daripada tindakan pelbagai faktor fizikal dan peredaran lautan. Kandungan pepejal terampai dalam plum sungai boleh mempengaruhi kedalaman fotik dan seterusnya mengawal produktiviti organisma marin. Kajian ini dijalankan untuk menentukan taburan plum di muara Sungai Pahang secara mendatar dan menegak pada setiap monsun serta faktor yang mempengaruhi kepelbagaiannya. Data lapangan serta data harian satelit MODIS digunakan bagi menentukan kepelbagaian taburan plum. Data saliniti, suhu dan ketumpatan air laut ditentukan menggunakan multiparameter YSI, klorofil-a menggunakan Aqua fluorometer, manakala zarah terampai menggunakan kaedah gravimetri. Data lapangan dianalisa bagi taburan mendatar menggunakan ArcGIS v10 manakala taburan menegak menggunakan Marine Explorer v4. Data harian MODIS pula diproses menggunakan perisian SeaDAS v6.4, ArcGIS v10 dan ERDAS v11 untuk menentukan taburan klorofil-a dan nlw555 yang mewakili bahan pepejal terampai di dalam kawasan plum secara mendatar. Hasil kajian menunjukkan sebaran plum menggunakan data lapangan pada peralihan monsun April, mengarah ke timur laut di penghujung stesen disebabkan oleh kehadiran arus geostrofik ke selatan di kawasan tersebut. Plum pada peralihan monsun Oktober tersebar ke arah timur laut kesan daripada arah dan magnitud angin ke timur laut yang kuat dan mencatatkan kedalaman plum sehingga 5m. Plum tersebar ke arah timur laut pada Monsun Barat Daya dengan kedalaman kurang daripada 5m. Pada Monsun Timur Laut pula, plum secara keseluruhannya dilihat mengarah ke arah selatan dengan kedalaman plum melebihi 5m akibat kesan arus geostrofik di hadapan mulut sungai. Sebaran plum secara mendatar menggunakan data satelit juga berpadanan dengan arah tiupan angin permukaan pada setiap monsun. Penentuan taburan plum menggunakan data lapangan dan satelit menghasilkan pola taburan yang sama. Hasil kajian menunjukkan kepelbagaian plum Sungai Pahang adalah bergantung kepada faktor arus geostrofik dan angin. Informasi dan pemahaman mengenai taburan plum mengikut musim adalah penting dalam aspek pengurusan dan perikanan di pesisir pantai kerana plum boleh mempengaruhi produktiviti organisma marin di kawasan tersebut.,The dispersion of suspended solids in the river plume is caused by various ocean physical factors and circulations that influence the plume distribution. The content of suspended solid could affect the photic depth in the water column and eventually controls the rate of productivity of the marine organism. This study aims to identify plume's horizontal and vertical distribution at Pahang River estuary during different monsoonal season including the factors influencing its variability. Field data and daily MODIS satellite data were used to determine the diversity of plume distribution. Salinity, temperature and density data were taken using multiparameter YSI apparatus, chlorophyll-a concentration was determined using Aqua fluorometer and suspended particulate matter was measured by gravimetric method analysis. The plume's spatial distribution from field data was plotted using ArcGIS v10 while Marine Explorer v4 was used to determine its vertical distribution. Daily MODIS data were processed using SeaDAS v6.4, ArcGIS v10 and ERDAS v11 software to produce chlorophyll-a and nlw555 (suspended particulate matter) surface distribution map. The result from field data shows a northeast spreading plume in April due to the southward geostrophic current at the end of the station that diverted it. The northeast spreading plume in October intermonsoon was effected by the strong northeast wind direction and magnitude and it reaches 5m depth. The plume propagated northeastward during Southwest monsoon with less than 5m plume penetration. During Northeast monsoon, the plume propagated partially northeast and southward with more than 5m depth due to the geostrophic current near the river mouth region. Plume surface distribution using satellite data showed corresponding result of wind direction with plume distribution in each monsoon. Determination of plume's distribution from field and satellite data produces a similar pattern. The results concluded that variability of Pahang River plume was dependent on geostrophic current and wind factor. Information and understanding on seasonal change of plume is significant in terms of management and fisheries at the coast as plume can affect the productivity of marine organism at the area.,Master
Pages:	109
Call Number:	QA911 .T337 2015
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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