Abstract
The strength of the vertical mixing in the bottom mixed layer near the continental shelf break in the East China Sea was directly measured with the Micro-Scale Profiler (MSP). It has been shown that there is no significant statistical relation between the turbulent energy dissipation ε and the degree of the stratification N2. It seems that the vigorous turbulence occurs not constantly but intermittently in the bottom mixed layer so that a large variation of ε is found depending on the time. In contrast to ε, the coefficient of the vertical eddy diffusivity Kz is mostly determined by N such that Kz is large in the bottom mixed layer and small in the thermocline. Large value of Kz in the bottom mixed layer is also found in the time series of Kz estimated in terms of Richardson number calculated from the data obtained with electromagnetic current meters. The value of Kz more than 10 cm2s-1 frequently occur in the layer of 20-25 m thick just above the bottom.
| Original language | English |
|---|---|
| Pages (from-to) | 437-448 |
| Number of pages | 12 |
| Journal | Journal of Oceanography |
| Volume | 50 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jul 1 1994 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Oceanography
Cite this
Vertical mixing in the bottom mixed layer near the continental shelf break in the East China Sea. / Matsuno, Takeshi; Kanari, Seiichi; Kobayashi, Chikashi; Hibiya, Toshiyuki.
In: Journal of Oceanography, Vol. 50, No. 4, 01.07.1994, p. 437-448.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vertical mixing in the bottom mixed layer near the continental shelf break in the East China Sea
AU - Matsuno, Takeshi
AU - Kanari, Seiichi
AU - Kobayashi, Chikashi
AU - Hibiya, Toshiyuki
PY - 1994/7/1
Y1 - 1994/7/1
N2 - The strength of the vertical mixing in the bottom mixed layer near the continental shelf break in the East China Sea was directly measured with the Micro-Scale Profiler (MSP). It has been shown that there is no significant statistical relation between the turbulent energy dissipation ε and the degree of the stratification N2. It seems that the vigorous turbulence occurs not constantly but intermittently in the bottom mixed layer so that a large variation of ε is found depending on the time. In contrast to ε, the coefficient of the vertical eddy diffusivity Kz is mostly determined by N such that Kz is large in the bottom mixed layer and small in the thermocline. Large value of Kz in the bottom mixed layer is also found in the time series of Kz estimated in terms of Richardson number calculated from the data obtained with electromagnetic current meters. The value of Kz more than 10 cm2s-1 frequently occur in the layer of 20-25 m thick just above the bottom.
AB - The strength of the vertical mixing in the bottom mixed layer near the continental shelf break in the East China Sea was directly measured with the Micro-Scale Profiler (MSP). It has been shown that there is no significant statistical relation between the turbulent energy dissipation ε and the degree of the stratification N2. It seems that the vigorous turbulence occurs not constantly but intermittently in the bottom mixed layer so that a large variation of ε is found depending on the time. In contrast to ε, the coefficient of the vertical eddy diffusivity Kz is mostly determined by N such that Kz is large in the bottom mixed layer and small in the thermocline. Large value of Kz in the bottom mixed layer is also found in the time series of Kz estimated in terms of Richardson number calculated from the data obtained with electromagnetic current meters. The value of Kz more than 10 cm2s-1 frequently occur in the layer of 20-25 m thick just above the bottom.
UR - http://www.scopus.com/inward/record.url?scp=0028594988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028594988&partnerID=8YFLogxK
U2 - 10.1007/BF02234966
DO - 10.1007/BF02234966
M3 - Article
AN - SCOPUS:0028594988
VL - 50
SP - 437
EP - 448
JO - Journal of Oceanography
JF - Journal of Oceanography
SN - 0916-8370
IS - 4
ER -