Browsing by Author "Zuraini Binti Zainol"

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    Coastal upwelling and phytoplankton biomass in Terengganu and Pahang coastal waters
    (Terengganu: Universiti Malaysia Terengganu, 2015) Zuraini Binti Zainol
    Oceanographic cruises were conducted to investigate the dynamical relationship between hydrography, current circulation and phytoplankton biomass at the east coast of Peninsular Malaysia (ECPM) and elucidate the structure of upwelling at the ECPM especially in the vicinity of Tioman Island. Physical observations in the upwelling area were analysed with respect to local wind forcing. Chlorophyll a and nutrients measurements were discussed based on different seasonal influence.
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    Coastal Upwelling And Phytoplankton Biomass In Terengganu And Pahang Coastal Waters
    (Universiti Malaysia Terengganu, 2015-09) Zuraini Binti Zainol; Institute of Oceanography and Environment
    Oceanographic cruises were conducted to investigate the dynamical relationship between hydrography, current circulation and phytoplankton biomass at the east coast of Peninsular Malaysia (ECPM) and elucidate the structure of upwelling at the ECPM especially in the vicinity of Tioman Island. Physical observations in the upwelling area were analysed with respect to local wind forcing. Chlorophyll a and nutrients measurements were discussed based on different seasonal influence. In addition to field data measurement, satellite images were used to demonstrate the presence of upwelling and examine the spatial patterns of phytoplankton biomass at the ECPM. The outcome of this study showed that the southwesterly monsoon wind, which induced coastal upwelling, was the major mechanism that shaped the hydrographic character and the relatively high phytoplankton biomass found at the study area. Results also showed that the waters off Tioman Island had relatively cooler temperature and higher phytoplankton biomass due to nutrient enhancement than Terengganu. The presence of this character was in response to strong northward upwelling and freshwater intrusion in both areas. In the vicinity of Tioman Island, there was a small but distinguishable cooler-upwelled water and slightly stronger current at the north of the island. This feature appeared to be caused by the interaction of multiple dynamical processes including coastal upwelling, island circulation and topographic variations in this area. Overall, the interaction of physical processes between wind-induced upwelling, coastal current and island circulation were believed to be the key drivers in regulating the hydrography and horizontal as well as vertical distribution of phytoplankton biomass.
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    Monsoonal effects on hydrodynamic and water quality at Setiu wetland, Terengganu
    (Universiti Malaysia Terengganu, 2020-08) Zuraini Binti Zainol
    Setiu Wetland is facing shoreline alterations, which caused relocation of the inlet through a natural closing of the old river mouth and the opening of a new one. Research has shown that continuous actions of monsoonal wind, wave, and current were the reason of this alteration. To our knowledge, very few of the previous researches in Setiu Wetland are focusing at the new inlet area. Thus, this study attempts to understand the hydrodynamics and water quality in Setiu Wetland from the new inlet perspective. The repositioning of this inlet raises questions such how the current flow in the lagoon has changed and how capable this ecosystem in maintaining its water quality since most of the sources of anthropogenic activities are situated at the old inlet. In order to have a general overview of the current status at the new inlet, in situ field surveys were carried out during August 2017, December 2017, and February 2018 which represent the southwest monsoon, wet period of northeast monsoon, and dry period of northeast monsoon, respectively. Statistical analysis was performed on the environmental parameters to demonstrate relationships among variables. Numerical modelling was also executed to improve the restrictions of field observations while providing a better understanding of the dynamics of this water body. The results indicated that the current flow in Setiu Wetland is tidally dominated, following the ebb and flood as well as neap and spring tides cycles. Larger size of Setiu River produced slightly stronger tidal current at the south of the inlet area.