contributor author | Yao, T. | |
contributor author | Freeland, Howard J. | |
contributor author | Mysak, Lawrence A. | |
date accessioned | 2017-06-09T14:46:52Z | |
date available | 2017-06-09T14:46:52Z | |
date copyright | 1984/01/01 | |
date issued | 1984 | |
identifier issn | 0022-3670 | |
identifier other | ams-26626.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4163541 | |
description abstract | Six current-meter mooring were deployed in a line approximately 600 km in length along the continental shelf of British Columbia. Analysis of the low frequency (periods exceeding a day) fluctuations in current for the winter 1981?82 period is discussed. Alongshore currents off Vancouver Island are mutually correlated with time lag less than a day. The region of mutual correlation does not extend north of Vancouver Island, across Queen Charlotte Sound. Coherence is observed between currents south and north of Queen Charlotte Sound only in a frequency band where there is mutual coherence with local wind. A comparison is made between observation and free coastal-trapped wave theory. Off northern Vancouver Island, where the shelf is narrower than off southern Vancouver Island, there is increased vertical shear, a feature of the second coastal-trapped wave mode. A consistency test is applied using the cross spectral matrix of alongshore components of velocity. In the dominant energy-containing frequency bands (periods ?10 days), the structure of alongshore currents off Vancouver Island is consistent with the two lowest free coastal-trapped wave modes locked in phase. | |
publisher | American Meteorological Society | |
title | A Comparison of Low-Frequency Current Observations off British Columbia with Coastal-Trapped Wave Theory | |
type | Journal Paper | |
journal volume | 14 | |
journal issue | 1 | |
journal title | Journal of Physical Oceanography | |
identifier doi | 10.1175/1520-0485(1984)014<0022:ACOLFC>2.0.CO;2 | |
journal fristpage | 22 | |
journal lastpage | 34 | |
tree | Journal of Physical Oceanography:;1984:;Volume( 014 ):;issue: 001 | |
contenttype | Fulltext | |