소형 표류부이를 이용한 안목해안 표층 연안류 관측 KCI OTHER

Title
소형 표류부이를 이용한 안목해안 표층 연안류 관측
Alternative Title
Surface current measurements using lagrangian Drifters in Anmok
Author(s)
임학수; 김무종; 심재설
KIOST Author(s)
Lim, Hak Soo(임학수)
Publication Year
2017-12
Abstract
In this study, surface currents measured by small lagrangian GPS drifters (Aquadrifter) in Anmok coastal waters were analysed to account for the variability of nearshore surface current and wave-induced current to understand sediment transport mechanism near the crescentic bars in the surf-zone and near Kangneung breakwater and submerged breakwater in Anmok. The 8 times lagrangian drifter experiments were conducted mostly during in 2nd, 3rd, 4th intensive measurements in winter, summer, and spring seasons with long-term wave observation at the station W1.
The analysed surface currents near the breakwaters in Anmok show that wave-induced currents at the middle of the submerged breakwater were separated and flowed toward the shoreline but offshore currents were dominant through the channels between the breakwaters. The longshore currents near the shoreline were flowed to the northwest (southeast) depending on the incoming waves from ENE (NNE). The surface nearshore offshore currents were generated mostly by waves and winds in case of high and low wave energy environments.
Using the small-size lagrangian surface drifter experiments, we successfully measured longshore and offshore wave-induced currents in the surf-zone and near submerged breakwater close to Kangneung breakwater. The drifter experiment results show the availability of direct observation of nearshore surface currents to understand the mechanism of sediment transport analysing observed wave-induced current and ebb-current in the surf-zone generated by incoming waves and local winds.
ISSN
2288-7903
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1100
Bibliographic Citation
한국연안방재학회지, v.4, no.5, pp.245 - 253, 2017
Publisher
(사)한국연안방재학회
Keywords
Jinha Beach; XBeach model; video monitoring data; wave induced residual current
Type
Article
Language
Korean
Publisher
(사)한국연안방재학회
Related Researcher
Research Interests

Coastal Disaster Prevention,Coastal Erosion Research,Coastal Ocean Modeling,연안재해방재,연안침식연구,연안해양모델링

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