Author(s): Moon Ock Lee; Byeong Kuk Kim; Sung Jin Park; Jong Kyu Kim
Linked Author(s):
Keywords: Gamak bay; Oyster farms; Seawater behavior; Water masses; Residual currents; Harmonic analysis
Abstract: A field observation has been conducted in order to assess seawater behaviors that affect the fishery environment of oyster farms in Gamak Bay. Tidal waves near the two channels at the northeast and south of the bay had almost the same amplitudes and phases. Water temperature responded sensibly to the tides, rising at high water and falling at low water, except for the northwest region. The currents more regularly varied in accordance with a tidal period as long as they are at the faster-flowing region. A considerable flow has been found near the seabed of the northwest of the bay, normally known to be a stagnant area, and also the flow was opposite to the surface flow. Average moving speeds and directions of the flow at each station coincided well with patterns of the residual currents by a two-dimensional numerical model, except for the northwest region. The discrepancy for the northwest region is not clear but it is inferred that because the computational result represents only a spring tide and in addition, a northwesterly wind prevailed all the observation time.
Year: 2005