Hydrodynamical Conditions of the Bangpakong Estuary in Wet and Dry Seasons

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Abstract

Hydrodynamical conditions of the Bangpakong Estuary in wet and dry seasons are studied by employing field observation data and diagnostic two-dimensional numerical experiment. Vertical distributions of salinity illustrate that this estuary can be categorized as the salt wedge estuarine type in wet season, and the slightly stratified (partially mixed) estuarine type in dry season. Results from model experiments show that stronger current can be found in wet season, and well mixing occurs near the river mouth in both seasons. The computed currents only represent the effect from density driving force, while the measured current data indicate the importance of three-dimensional structure of the circulation in this estuary.

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