水面冷却に伴う表層の温度鉛直分布と対流量の推算法  [in Japanese] Estimation of Vertical Distribution of Water Temperature in Surface Layer and Convection Flux due to Surface Cooling  [in Japanese]

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Author(s)

Abstract

気温の上昇する成層期、湾底層に発達する貧酸素水塊は、気温が低下して対流がはじまると速やかに消滅する。このように海面冷却に伴う対流は湾の貧酸素化解消に大きな役割を果たしている。ところが対流によってどの程度の表層水が下層に移動し、その結果どの程度の表層から下層に輸送されるかについては不明である。ここでは、海面冷却熱量から対流量を推算するための一次元熱対流モデルを提案し、その精度を実験で確かめる。

Oxygen-deficient water mass on the bottom formed during period of stratification are broken down quicklyby convection due to atmospheric temperature falling in abay. The quantitative study on convection has not beenreported so far. Here we presented a one-dimensional model for quantifying convection due to surface cooling,and the results calculated by the model corresponded to both K. B. Katsaros's experimental values and ours pretty,such as the vertical distribution of temperature in the surface thermal boundary layer and the heat flux throughsurface, when the diffusion coeffcient for the model is given as half of that of water. Moreover by this model,the sinking value of the convection at surface layer can be estimated that which usually did not succeed in formermethods, and the sinking flux of the convection due to the water temperature difference of 1-3° between surfaceand bottom, this time, is equal to the mass transfer coefficient due to the velocity of the wind of 3-5 m/s.

Journal

  • Journal of Fisheries Engineering

    Journal of Fisheries Engineering 34(3), 239-245, 1998-03-01

    The Japanese Society of Fisheries Engineering

References:  9

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008274626
  • NII NACSIS-CAT ID (NCID)
    AN10278554
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09167617
  • NDL Article ID
    4474798
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-1327
  • Data Source
    CJP  CJPref  NDL  J-STAGE  JASI 
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