Turbulent dissipation and mixing in Prydz Bay

Qingxuan Yang; Jiwei Tian; Wei Zhao; Lingling Xie

doi:10.1007/s00343-013-2040-3

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Turbulent dissipation and mixing in Prydz Bay

Updated：2023-05-16

- Turbulent dissipation and mixing in Prydz Bay
- Journal of Oceanology and Limnology Vol. 31, Issue 2, Pages: 445-453(2013)
- Affiliations：
  
  1. Physical Oceanography Laboratory Ocean University of China
  2. South China Sea Environmental Institute Guangdong Ocean University
- Author bio：
- Funds：
- DOI：10.1007/s00343-013-2040-3
  CLC：
- Online First：07 March 2013，
  
  Published：2013
- Accepted：
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Yang, Q., Tian, J., Zhao, W. et al. Turbulent dissipation and mixing in Prydz Bay., Chin. J. Ocean. Limnol. 31, 445–453 (2013). https://doi.org/10.1007/s00343-013-2040-3
DOI：

Yang, Q., Tian, J., Zhao, W. et al. Turbulent dissipation and mixing in Prydz Bay., Chin. J. Ocean. Limnol. 31, 445–453 (2013). https://doi.org/10.1007/s00343-013-2040-3 DOI：

摘要

Abstract

In this paper

we present measurements of velocity

temperature

salinity

and turbulence collected in Prydz Bay

Antarctica

during February

2005. The dissipation rates of turbulent kinetic energy (ɛ) and diapycnal diffusivities (K z ) were estimated along a section in front of the Amery Ice Shelf. The dissipation rates and diapycnal diffusivities were spatially non-uniform

with higher values found in the western half of the section where ɛ reached 10−7 W/kg and K z reached 10−2 m2/s

about two and three orders of magnitude higher than those in the open ocean

respectively. In the western half of the section both the dissipation rates and diffusivities showed a high-low-high vertical structure. This vertical structure may have been determined by internal waves in the upper layer

where the ice shelf draft acts as a possible energy source

and by bottom-generated internal waves in the lower layer

where both tides and geostrophic currents are possible energy sources. The intense diapycnal mixing revealed in our observations could contribute to the production of Antarctic Bottom Water in Prydz Bay.

关键词

Keywords

references

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