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Interpolation Method and The Accuracy Of Bathymetric Seabed Models On
Single Beam Echosounder Data
Muhammad Amirul Faris bin Abdul Rahman
Supervisor: Dr. Khaira Ismail
Bachelor of Science (Marine Science)
School of Marine and Environmental Sciences
Bathymetric data are taken by various geophysical survey methods such as singlebeam
echosounders and multi-beam echosounders. However, these geophysical
survey methods are with limitations preventing it from recording data of an entire
sampling site. Hence, a process of estimations or known as interpolations are required
to produce a continuous surface map. There are various interpolation techniques
available and each technique produces different estimations. As an accurate
bathymetric map is needed for an effective ocean management, it is important to
determine which interpolation technique gives the most accurate estimate. In this
research, a total of 12 different techniques are tested through a validation process to
determine the best interpolation technique. Here, we find that a deterministic
interpolation technique of Spline with Tension produces the best accuracy of
estimates. Additionally, the best and worst performing technique is then used to create
a bathymetric derivative slope map from the interpolated bathymetry map.
1882 | UMT UNDERGRADUATE RESEARCH DAY 2018