Measurement of net flow through a channel

Author

Howarth, M.J. ; Harrison, A.J. ; Knight, P.J. ; Player, R.J.J.

Author_Institution

Proudman Oceanogr. Lab., Bidston Obs., Birkenhead, UK

fYear

1995

fDate

7-9 Feb 1995

Firstpage

121

Lastpage

126

Abstract

The flow through the North Channel of the Irish Sea has been measured from summer 1993 to autumn 1994 by a surface current HF radar system, which covered the width of the channel, and a broadband 150 kHz ADCP. The ADCP was deployed in a low profile sea bed frame. Its transducers pointed at 20° to the vertical; currents were recorded in 5 m cells from 12.5 m above the sea bed to 15 m below the surface in 142 m of water. The ADCP´s backscattered signal exhibited daily and seasonal cycles consistent with the scatterers being zooplankton. Preliminary results showed that one surge was twice as large as the rest; near surface shear was confined at most to the top 15 m; the mean current at the ADCP site was directed out of the Irish Sea near the bed and into it near the surface; there was a strong surface flow out of the Irish Sea near the Scottish coast

Keywords

oceanographic regions; AD 1993; AD 1994; Irish Sea; North Channel; Northern Ireland; Scotland; Scottish coast; channel; current; diurnal variation; net flow; ocean dynamics; sea coast; season; seasonal cycle; surface current HF radar; surface flow; surge; Acoustic measurements; Current measurement; Fluid flow measurement; Frequency estimation; Hafnium; Radar measurements; Sea measurements; Sea surface; Velocity measurement; Water heating;

fLanguage

English

Publisher

ieee

Conference_Titel

Current Measurement, 1995., Proceedings of the IEEE Fifth Working Conference on

Conference_Location

St. Petersburg, FL

Print_ISBN

0-7803-2437-4

Type

conf

DOI

10.1109/CCM.1995.516161

Filename

516161