이어도 종합해양과학기지의 비디오 이미지를 이용한 Whitecap coverage 관측 기법 수립 OTHER

Title
이어도 종합해양과학기지의 비디오 이미지를 이용한 Whitecap coverage 관측 기법 수립
Alternative Title
Establishing Whitecap Coverage Observation Techniques using Video Image of Ieodo Ocean Research Station
Author(s)
김선신; 민용침; 정종민; 민인기; 정진용; 심재설
KIOST Author(s)
Min, Yongchim(민용침)Jeong, Jongmin(정종민)Min, In Ki(민인기)Jeong, Jin Yong(정진용)
Publication Year
2016-12
Abstract
Result from the global environmental changes represented by global warming, environmental variables including the sea temperature and sea surface height rise, ocean acidification, etc are reported to being in progress rapidly. Many studies have been carried out to understand the cause of the environmental changes and to deal with the impact. The environmental changes are closely related to the interaction between the ocean and atmosphere, especially in the boundary layer between them. So many studies on the energy and material, such as carbon dioxides, exchanges between the ocean and atmosphere are under going. In recent years, whitecap is recognized as the important parameters for the interaction between the ocean and atmosphere. There have been many efforts to observe and qualifying variables related to whitecap.
Whitecap is the direct result from the wave breaking which have large temporal and spatial variability, and it is very hard to do quantitative observation. Previous studies have suggested the analytical solution, which defined the whitecap coverage, calculated from the wind, as a primary variable. Recently, owing to development in the image processing technologies, videos and still images are being used to observe whitecap coverage. But it has been very hard to obtain the continuous, precise wave images in the ocean.
In this study, wave image obtained in the Ieodo Ocean Research Station were used to reduce the error of the conversion from image to whitecap coverage, and the formula which suggested by Sugihara et al. (2007). Specifically, it presented Pixel intensity threshold determination method and criteria image sampling frequency of Whitecap.
ISSN
2288-7903
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2069
DOI
10.20481/kscdp.2016.3.4.179
Bibliographic Citation
한국연안방재학회지, v.3, no.4, pp.179 - 187, 2016
Publisher
(사)한국연안방재학회
Keywords
Wave breaking; Whitecap coverage; Pixel intensity threshold; Image processing; Ieodo Ocean Research Station
Type
Article
Language
Korean
Publisher
(사)한국연안방재학회
Related Researcher
Research Interests

Variablility of ocean physical environment,해양물리환경변동

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