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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Tukimat Lihan, Dr. | |
| dc.contributor.author | Mohamad Amizam bin Abdul Jabbar (P57430) | |
| dc.date.accessioned | 2023-09-25T09:21:13Z | - |
| dc.date.available | 2023-09-25T09:21:13Z | - |
| dc.date.issued | 2014-07-02 | |
| dc.identifier.other | ukmvital:75459 | |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/463300 | - |
| dc.description | Estuarine outflow associated with suspended matter concentrations and pollutants have a major impact on marine ecosystems. Understanding Pahang River plume dynamics and dispersal patterns are important for the management of its coastal water quality and biological productivity. This study aims to determine the size and the variability of Pahang River plume at the coastal area.One km spatial resolution satellite image of normalized water-leaving radiance, (nLw 488, 531 and 551) from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Aqua satellite was analyzed for the period of 2005-2010. An unsupervised classification scheme, using the 3 channels of normalized water-leaving radiance with each spectral signature statistic, was used to define the class of surface water bodies based on its optical characteristics.The Pahang River plume showed the largest size during northeast monsoon and the smallest during southwest monsoon. River plume signature with high reflectance values were recorded during the northeast monsoon and low during the southwest monsoon. The results showed that the distributions of the river plume are highly diverse in shape and direction. Diversity of river plume is summarized using Empirical orthogonal function (EOF). EOF was used to express the spatial and temporal variability of the plume using anomalies of nLw (551) monthly averaged images. The EOF analysis shows that there are five modes to describe the spatial and temporal variability of river plume with a total of 77.4% from the total variance. The first mode (54% of variance) shows that the plume distributed along the coastal area has the highest variability in the spatial pattern and indicating the seasonal cycle. The second mode explains about 8% of the spatial and temporal variability which appeared to propagate along the coast and offshore, describing the dominance effect of northeast monsoon. Third mode (6.2% of variance) describes the plume distribution offshore during October and November which can be associated with the inter-monsoon of southwest to northeast monsoon. Fourth mode (4.8% variance) which is related to the inter-monsoon of northeast to southwest monsoon, explains the movement of river plume from the river estuary towards south. Meanwhile, the fifth mode (4.4% variance) shows the distribution of the plume to the north which could be associated with the southwest monsoon. This high variability of the plume distribution along the coastal area is influenced by precipitation, magnitude and direction of wind stress and sea surface currents.The use ofremote sensingsatellite was able toobserveandassessingcharacteristics oftheformation and distribution ofplumes at the estuaryandcoastalareas.,Master/Sarjana | |
| dc.language.iso | may | |
| dc.publisher | UKM, Bangi | |
| dc.relation | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
| dc.rights | UKM | |
| dc.subject | Plum Sungai Pahang | |
| dc.title | Kajian variasi ruang dan masa plum Sungai Pahang menggunakan imej satelit | |
| dc.type | theses | |
| dc.format.pages | 111 | |
| dc.identifier.barcode | 001240 | |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_75459+Source01+Source010.PDF Restricted Access | 5.29 MB | Adobe PDF |  View/Open |
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