A Study on the Topography and Current Characteristic of the Before and After Construction at Geum River Estuary Dike

J. Ocean Eng. Technol. 2006;20(3):61-66.

Shin Moon-Seup;Bae Ki-Seong;Kang Shin-Jung;Kim Jae-Hyoung;

Division of Civil & Environmental Engineering, Kunsan Univ;Department of Ocean Civil Engineering;Department of Civil Engineering, Kunsan Univ;Department of Civil Engineering, Kunsan Univ;

금강하구둑 축조 전.후의 지형 및 흐름특성에 관한 연구

신문섭;배기성;강신중;김재형;

군산대학교 토목환경공학부;경상대학교 해양토목공학과;군산대학교 토목공학과;군산대학교 토목공학과;

Keywords: Estuary, Geum river estuary, Topography change, Digitizing, Change of water depth

핵심용어: 하구역, 금강 하구, 지형 변화, 디지타이징, 수심변화

Abstract

The estuary has a very complex coastline and bottom topography. Before the close of floodgate, the Keum river estuary was deposited with sediment from the Keum river, created bythe construction of the Keum river estuary dike. So, a periodical dredging is necessary to assure water depth for boat entry and departure to Kunsan port. Theof this study is to find the change of tidal current of M2tide and the topography before and after construction at the Geum River estuary dike. The change of water depth is investigated by digitizing the sea map (No.305) of Kunsan port, which was edited by National Oceanographic Research Institute. The calculated co-range and co-tidal charts of M2tide before the dike construction are similar to the observed ones. Therefore, the amplitude and phase after construction at Geum River estuary dike increases compared to before construction at Geum River estuary dike. The scour occurred in the A-A' section.