- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Faculty Research and Publications /
- Observations and linear analysis of sill-generated...
Open Collections
UBC Faculty Research and Publications
Observations and linear analysis of sill-generated internal tides and estuarine flow in Haro Strait Pawlowicz, Rich
Abstract
Current meter records from two sets of observations 20 years apart in Haro Strait, British Columbia, Canada, are analyzed. Haro Strait is a deep channel separated from larger bodies of water on either side by relatively shallow sills. The estuarine flow in this region is in approximate geostrophic balance and is apparently unaffected by the tidally driven spring/neap cycle in vertical stratification. Strong baroclinic variability with an amplitude 1 m s-1 (close to the amplitude of the barotropic tide) is present. A linear theory for internal tides in silled basins is developed using no-bottom-flow boundary conditions to represent sill effects. By comparison with observations it is concluded that an internal tide is generated at the seaward sill and propagates inshore. Although local damping appears to be weak, no return signal is found from the inshore sill, suggesting that either dissipation is strong in that area or that the internal tide is transmitted across that sill. An edited version of this paper was published by AGU. Copyright 2002 American Geophysical Union.
Item Metadata
Title |
Observations and linear analysis of sill-generated internal tides and estuarine flow in Haro Strait
|
Creator | |
Publisher |
American Geophysical Union
|
Date Issued |
2002-06
|
Description |
Current meter records from two sets of observations 20 years apart in Haro Strait, British Columbia, Canada, are analyzed. Haro Strait is a deep channel separated from larger bodies of water on either side by relatively shallow sills. The estuarine flow in this region is in approximate geostrophic balance and is apparently unaffected by the tidally driven spring/neap cycle in vertical stratification. Strong baroclinic variability with an amplitude 1 m s-1 (close to the amplitude of the barotropic tide) is present. A linear theory for internal tides in silled basins is developed using no-bottom-flow boundary conditions to represent sill effects. By comparison with observations it is concluded that an internal tide is generated at the seaward sill and propagates inshore. Although local damping appears to be weak, no return signal is found from the inshore sill, suggesting that either dissipation is strong in that area or that the internal tide is transmitted across that sill. An edited version of this paper was published by AGU. Copyright 2002 American Geophysical Union.
|
Genre | |
Type | |
Language |
eng
|
Date Available |
2011-05-31
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
|
DOI |
10.14288/1.0041946
|
URI | |
Affiliation | |
Citation |
Pawlowicz, Rich. 2002. Observations and linear analysis of sill-generated internal tides and estuarine flow in Haro Strait. ournal of Geophysical Research Oceans 107(6) 3056 9-1-9-13
|
Publisher DOI |
10.1029/2000JC000504
|
Peer Review Status |
Reviewed
|
Scholarly Level |
Faculty
|
Copyright Holder |
Pawlowicz, Rich
|
Rights URI | |
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International