Development of an alternative depositional model of Sungai Pahang Delta
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Date
2009
Authors
Hashim, Raidi
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Abstract
The Sungai Pahang delta has traditionally been classified as an example of a
wave dominated delta. However at its coastline, the Pahang delta exhibits a variety of
morphologies and facies which represent an excellent example of intermingling process
between fluvial, wave, longshore drift and micro tidal. The coastline comprises of a
northern linear beach, a central river mouth and a southern micro-tidal coast. The
northern linear wave dominated beach has a cuspate form at Kuala Pahang receiving
sand from the river mouth in the north and south or from indirect sources such as
reworked shelf sands which are influenced by the long shore drift. At the central river
mouth of Kuala Pahang, numerous mid channel bars formed illustrating high sediment
influx from the provenance and transgressed by the influence of combined effect of tidal
energy, long shore drift and the wave front. The southern part of the Pahang delta has
developed into a barrier beach complex, lagoon, marsh, tidal flat and spit as combined
results of down drift long shore current and micro tidal effect.
New geological and geophysical surveys were conducted in the Sungai Pahang
coastline area to understand the delta depositional processes. Previous geomorphology
and subsurface academic journal were studied and integrated to assist in the
understanding of how the Sungai Pahang basin was filled. Consequently, an alternative
depositional model of Sungai Pahang delta that incorporated the effect of Holocene
eustasy is offered.
Description
Master
Keywords
Science Physic , Depositional model , Sungai Pahang Delta