Vertical mixing due to double diffusion in the tropical western Pacific SCIE SCOPUS

Cited 9 time in WEB OF SCIENCE Cited 7 time in Scopus
Title
Vertical mixing due to double diffusion in the tropical western Pacific
Author(s)
Lee, Chorong; Chang, Kyung-Il; Lee, Jae Hak; Richards, Kelvin J.
KIOST Author(s)
Lee, Jae Hak(이재학)
Publication Year
2014-11-28
Abstract
This study calculates the vertical diffusivity and the fluxes of heat, salt, and buoyancy due to turbulence and double diffusion based on a 14day time series of observations of the dissipation rates of turbulent kinetic energy and thermal variance at 0 degrees N, 156 degrees E from 25 October to 18 November 2012. Salt fingering dominates shear-driven turbulence below 100m. The estimated flux and associated vertical diffusivity due to double diffusion are approximately 1 order of magnitude higher for temperature and density and 2 orders of magnitude higher for salinity compared to values calculated from a turbulence model. Under weak turbulence conditions, the turbulence model significantly underestimates the magnitude of the vertical buoyancy flux with the flux having the wrong sign. Under these conditions, fluxes induced by double-diffusive mixing need to be considered.
ISSN
0094-8276
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2672
DOI
10.1002/2014GL061698
Bibliographic Citation
GEOPHYSICAL RESEARCH LETTERS, v.41, no.22, pp.7964 - 7970, 2014
Publisher
AMER GEOPHYSICAL UNION
Subject
SALT FINGERS; EQUATORIAL PACIFIC; UPPER OCEAN; THERMOCLINE; TURBULENCE; WATER; MICROSTRUCTURE; DISSIPATION; INTRUSIONS; EFFICIENCY
Keywords
mixing; double diffusion
Type
Article
Language
English
Document Type
Article
Publisher
AMER GEOPHYSICAL UNION
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