A note on ADCP-based indirect observations of turbulence

A 70-day data set from bottom-mounted ADCPs on the two sides of the Faroe-Bank Channel was analysed using the recorded flow variance and echo intensity in the deeper reaches of the passage as proxies for turbulence. A consistent picture emerged, not least since the data losses (which were ascribed t...

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Bibliographic Details
Main Authors: Enmar, Linda, Lake, Iréne, Lundberg, Peter, Sigray, Peter
Format: Article in Journal/Newspaper
Language:English
Published: Stockholms universitet, Meteorologiska institutionen (MISU) 2016
Subjects:
Earth and Related Environmental Sciences
Geovetenskap och miljövetenskap
Faroe Bank
Boreal Environment Research
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-130646
Description
Summary:A 70-day data set from bottom-mounted ADCPs on the two sides of the Faroe-Bank Channel was analysed using the recorded flow variance and echo intensity in the deeper reaches of the passage as proxies for turbulence. A consistent picture emerged, not least since the data losses (which were ascribed to turbulence-induced activation of the fish-elimination option in the ADCP software) could be shown to co-vary with the internal M-2 tide affecting the vertical shear, which in turn proved to be correlated with the flow variance.

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