Geoscience Reference
In-Depth Information
Determination of Tidal Datum
for Delineation of Littoral Zone
for Marine Cadastre in Malaysia
Rasheila Rahibulsadri, Abdullah Hisam Omar, Ashraf Abdullah,
Wan Muhammad Aizzat Wan Azhar, Hasan Jamil, Teng Chee Hua,
Chan Keat Lim and Tan Ah Bah
Abstract The rapid development of coastal areas in Malaysia for economic
generation activities and public interests has triggered the need for a new system of
marine administration. Marine cadastre is the key in managing a complex marine
administration that covers horizontal and vertical components. A tidal datum is a
standard elevation defined by a certain phase of the tide. Tidal datum is also the
basis for establishing privately owned land, state owned land, territorial sea,
exclusive economic zone, and high seas boundaries. This chapter reviews some
concepts and issues pertaining to the delineation of the tidal line for marine
cadastre in Malaysia. This study analyzed the use of Lowest Astronomical Tide
(LAT) as reference datum in marine cadastre. Localized hydrodynamic approach
was used for generating the tidal model due to suitability and availability of global
tidal model. Tide datasets acquired from Department of Survey and Mapping
Malaysia (DSMM) has been processed using tidal analysis software for computing
the LAT as the reference datum for marine cadastre. Output from the tidal data
observed are tidal analysis can be made on sea levels, chart datum, types of tide