dc.description.abstract |
Development project on coastline of Malaysia without proper plan will caused
problem. However a proper plan in the coastline project requires proper study and
one of them is the physical oceanography particularly in Lekir Bay. Lekir Bay is
located in Manjung District in the state of Perak, extending from the northern part of
Perak River mouth to the southern tip of Pangkor Island (3
o
o
o
58.5’N - 4
9.6’N, 100
o
34.8’E – 100
45.8’E). Lekir Bay is known to have two prominent physical
influences i.e., fresh water runoff from the Perak River on the southwest and warm
water discharge from Sultan Azlan Shah Power Station (SASPS) the northwest.
Occasionally, there are series of jellyfish ingression (Chrysaora quinquecirrha)
reported and causing problems to SASPS. While on the mud flat of Lekir Bay,
seasonal natural spat fall of Blood Cockle (Anadara granosa) has been reported.
This study aims at the physical oceanography in the aspect of spatial and temporal
variability thru three main components i.e., (a) Physical setting i.e., bathymetry of
SASPS and Lekir Bay; (b) Water properties distributed on the horizontal i.e., Surface
current and direction, Sea Surface Temperature (SST), Sea Surface Salinity (SSS) and turbidity as well as their physical profile for current, temperature, salinity and
turbidity and (c) Other influences (secondary data) i.e., mean monthly rainfall, wind,
monsoon and Lowest Astronomical Tide (LAT) influenced to the physical
hydrodynamic of the bay and SASPS underwater intake points. A total of 87
sampling stations for physical oceanographic (with five water level classification for
sampling i.e., surface, below surface, mid water, below mid water and bottom) and
sediment texture study along with two continuous Acoustics Doppler Current
Profiler (ADCP) stations at the SASPS’s intake point were done. While, detail
sounding for bathymetry of SASPS waters and 300 meter interval line transect for
Lekir Bay were conducted. The study has successfully determined the objective thru
three components and elaborates their connection. Physical setting which is a passive
indicator were successfully defined in this thesis i.e., the detail bathymetry chart
surrounding the SASPS revealing the SASPS underwater intake system and how
other physical parameter influenced by the weather affected. Four zone were
identified typical with its physical characteristics i.e., zone A (southern part of
SASPS), zone B (Perak River mouth and it closed adjacent), zone C (coastal waters
of Lekir Bay) and zone D (Lekir front). |
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