일본 이사하야 방조제 건설에 따른 조석 변형

Title
일본 이사하야 방조제 건설에 따른 조석 변형
Alternative Title
Tidal modification by Isahaya dike in the Ariake Sea, Japan
Author(s)
이석; 이흥재; 송규민
KIOST Author(s)
Lee, Seok(이석)
Publication Year
2006-10-16
Abstract
Construction of a 7 km long sea dike was completed in 1997 to reclaim the inner part of the Isahaya Bay in the Ariake Sea, Kyushu, Japan. According to tidal analyses, tidal range after the dike construction is reduced by about 3 % in front of the dike and 1.4 % at the entrance of the Ariake Sea. This reduction is claimed as one of the main reasons for environmental changes in the sea. Two possible causes were suggested on the tidal modification; inner effect of the dike construction and outer effect of amplitude variation at the entrance of the sea. However, their relative importance is still debated. Using one-dimensional analytical model, we examined tidal modification mechanism by the dike construction and compared the inner and outer effects. The Ariake Sea is simplified as an enclosed channel with a branch of the Isahaya Bay. The model shows that shortening of the branch causes the reduction in tidal range in the entire channel. The dike construction can explains for more than 50 % of the tidal range in front of the Isahaya Bay, although the inner and outer effects are not decomposed at the channel entrance.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30865
Bibliographic Citation
ECSA (Estuarine and Coastal Sciences Association) 41th International Conference, pp.80, 2006
Publisher
ECSA
Type
Conference
Language
English
Publisher
ECSA
Related Researcher
Research Interests

Tidal dynamics,Water circulation,Marine Environment,조석 역학,해양순환,해양환경

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