Turbulent characteristics of the vertical wind velocity near the critical Richardson number

From analysis of the vertical wind velocity at two heights (3 and 30m) observed at Mizuho Station in Antarctica, intermittent turbulence was found under very stable conditions. In the range of gradient Richardson number from 0.2 up to about 2,wave-like flows with two groups of periods, in about the...

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Bibliographic Details
Main Authors: Osamu Chiba, Shun'ichi Kobayashi
Format: Report
Language:English
Published: Faculty of Science, Kochi University 1984
Subjects:
Mizuho
Mizuho Station
Antarc*
Antarctica
Memoirs of National Institute of Polar Research
Polar Research
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1671
http://id.nii.ac.jp/1291/00001671/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1671&item_no=1&attribute_id=18&file_no=1
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Summary:From analysis of the vertical wind velocity at two heights (3 and 30m) observed at Mizuho Station in Antarctica, intermittent turbulence was found under very stable conditions. In the range of gradient Richardson number from 0.2 up to about 2,wave-like flows with two groups of periods, in about the 10 and 20s, play a predominant role. Taking the behavior of such waves into account, the standard deviation and the skewness of the vertical wind velocity component were estimated.

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