• Title/Summary/Keyword: 동계

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Relation between the Heat Budget and the Cold Water in the Yellow Sea in Winter (동계의 열수지 황해냉수와의 관계)

  • Han, Young-Ho
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.14 no.1
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    • pp.1-14
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    • 1978

  • To study the fluctuation of cold water in the East China Sea in summer heat budget of the Yellow Sea in winter was analysed based on the oceanographic and meteorological data compiled from 1951 to 1974. The maintain value of insolation was observed in December($160{\sim}190ly/day$), while the maximum in February ($250{\sim}260ly/day$). The range of the annual variation was found to be less than 50 ly/day. The value of the radiation term ($Q_s-Q_r-Q_h$) was remarkably small (mean 20 ly/day) in winter. It was negative value in December and January, and a positive value in February. The minimum total heat exchange from the sea ($Q_({h+c}$) was found value (471 ly/day) in February 1962, and the maximum (882 ly/day) in January 1963. The annual total heat exchange was minimum (588 ly/day) in 1962, and maximum (716 ly/day) in 1968. If the average deviation of mean water temperature at 50m depth layer were assumed to be the horizontal index ($C_h$) of colder water, $C_h$ is $C_h=\frac{{\Sigma}\limit_i\;A_i\;T_i}{{\Sigma}\limit_i\;A_i}$ where $A_i$ denotes the area of isothermal region and $T_i$ the value of deviation from mean sea water temperature. The vertical index ($C_v$) of cold water can be expressed similarly. Consequently the total index (C) of cold water equals to the sum of the two components, i.e. $C=C_h$＋$C_v$. Taking the deviation of mean sea surface temperature(T'w) in the third ten-day of Novembers in the Yellow Sea as the value of the initial condition, the following expressions are deduced : $C－T'w＝32.06 - 0.049$ $\;Q_T$ $C_h-T'w/2=12.20-0.019\;Q_T$ $C_v-T'w/2＝18.07-0.027\;Q_T$ where $Q_T$ denotes the total heat exchange of the sea. The correlation coefficients of these regression equations were found to be greater than 0.9. Heat budget was 588 ly/day in winter, and minimum water temperature of cold water was $18^{\circ}C$ in summer of 1962. The isotherm of $23^{\circ}C$ extended narrowly to southward up to $29^{\circ}N$ in summer. However, heat budget was 716 ly/day, and minimum water temperature of cold water was $12^{\circ}C$ in summer of 1968. The isotherm of $23^{\circ}C$ extended widely to southward up to $28^{\circ}30'N$ in summer. As a result of the present study, it may be concluded that the fluctuation of cold water of the East China Sea in summer can be predicted by the calculation of heat budget of the Yellow Sea in winter.

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Healthy People - 속도를 지배하는 빙속여제 이상화

  • Choe, Ga-Yeong
    • 건강소식
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    • v.38 no.2
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    • pp.16-17
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    • 2014

  • 한국 스피드스케이팅의 간판스타 이상화가 '2014 소치 동계올림픽'에서 올림픽 2연패에 도전한다. 탄력적인 허벅지의 힘을 순간적으로 발산해 폭발적인 속도로 질주하는 스피드 스케이팅은 보는 이의 심장마저 세차게 뛰게 한다.

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수도권정비 기본계획

  • 한국레미콘공업협회
    • 레미콘
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    • no.12 s.2
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    • pp.97-116
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    • 1984

  • 건설부장관은 수도권정비번의위원회와 국무회의의 번의를 거체 대통령승인을 얻은 수도권정비기본계획을 지난7월 11일 건설부 고시 제254호로 공시했다. 동계획은 82~91년까지 10년간 서울 ㆍ인천 및 경기도 전역을 대상으로 인구, 산업, 교육, 도시정비등 전반적인 부문에 걸쳐 정비하려는 기본계획이므로 관심을 끌고 있다

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