MISC

1995年

Double diffusively induced intrusions into a density gradient

Geophysical Monograph Series
  • Moh Nagasaka
  • ,
  • Hideki Nagashima
  • ,
  • Jiro Yoshida

94
94
開始ページ
81
終了ページ
87
記述言語
英語
掲載種別
DOI
10.1029/GM094p0081
出版者・発行元
Blackwell Publishing Ltd

Double diffusive intrusion into a density gradient is investigated experimentally. We focus our attention on the dynamic structure of intrusion, although experimental conditions were essentially same as Turner [1978]. We released a sugar (salt) water body at its neutral buoyancy level into salt (sugar) stratified water. As an initial density anomaly of intruding water becomes large, a released water splits to form multiple intrusions. The total layer thickness(H) of multiple intrusion is proportional to the predicted vertical scale “H” [Ruddick &amp
Turner, 1979].The averaged velocity of intrusion is proportional to NH (N
buoyancy frequency), but the proportional constant is smaller when split occurs. This result suggests that there is some dissipation associated with the occurrence of split. The “collective instability” mechanism could be responsible for this phenomena “split”, because the layer splitting occurred when the Stern Number is much greater than order 1.

リンク情報
DOI
https://doi.org/10.1029/GM094p0081
ID情報
  • DOI : 10.1029/GM094p0081
  • ISSN : 2328-8779
  • ISSN : 0065-8448
  • SCOPUS ID : 85040116171

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