Characteristics of Water Temperature and Salinity Variations, and Seawater Exchange in Gamak Bay

Abstract

In order to understand temperature and salinity variations, and the characteristics of the seawater exchange through two channels of Gamak Bay, we conducted measurements of water temperature, salinity and current for fifteen days in the summer and winter. Based on the observational data, the current seemed to have a close relation with wind. In addition, a correlation analysis result proved that water temperature is likely to be more influenced by air temperature rather than tide. Moreover, water temperatures at the south channel varied more sensitively with the season rather than at the east channel because of its shallow depth. Seawater exchange rates were estimated to be 0.5~29.9% (mean: 11.6%) at the east channel but 1.3~62.6% (mean: 18.6%) at the south channel in summer. On the contrary, they were estimated to be 0.3~28.5% (mean: 8.9%) at the east channel but 0.1~97.9% (mean: 31.2%) at the south channel in winter. Thus, the rates of seawater exchange in Gamak Bay turned out that the south mouth is approximately three times higher than the east mouth, and it also suggested that seasonal winds affect the rates of seawater exchange in Gamak Bay.

C, N, and P Mass Balances in the Bottom Seawater–Surface Sediment Interface in the Reducing Environment due to Anoxic Water of Gamak Bay, Korea

“…Gamak Bay in Yeosu City, Korea, is 225.29 km 2 in an area spanning 15 km from north to south and 9 km from west to east [38]. It is characterized by a concaved bottom topography in the northwestern region with 9 m of mean water depth [38]. Typical semi-enclosed geography inhibits water circulation and induces stratification [39].…”

“…to south and 9 km from west to east [38]. It is characterized by a concaved bottom top raphy in the northwestern region with 9 m of mean water depth [38].…”

“…to south and 9 km from west to east [38]. It is characterized by a concaved bottom top raphy in the northwestern region with 9 m of mean water depth [38]. Typical semiclosed geography inhibits water circulation and induces stratification [39].…”