NDLI: Flow and sediment dynamics in migrating salinity intrusions: Fraser River estuary, Canada

Content Provider	Springer Nature Link
Author	Kostaschuk, Ray
Copyright Year	2002
Abstract	The salinity intrusion in the Fraser estuary, Canada, migrates landward during the rising tide and is flushed downstream on the falling tide. Suspended sediment concentrations are higher during unstratified flows than during stratified conditions. Mixing between the upper layer and the salinity intrusion is restricted by a strong density interface on the rising tide but enhanced mixing occurs across a weak salinity gradient on the falling tide. A weakly-developed estuarine turbidity maximum (ETM) and positive internal waves occur at the tip of the salinity intrusion as it migrates seaward. Spectral analyses of optical backscatter probe time series indicate that sediment movement from the upper layer is restricted by the density interface on the rising tide. During the falling tide, sediment mixing is enhanced by internal waves at the surface of the ETM. Internal waves generated at the density interface have a higher frequency during the rising tide than the falling tide.
Starting Page	197
Ending Page	203
Page Count	7
File Format	PDF
ISSN	01608347
Journal	Estuaries
Volume Number	25
Issue Number	2
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Environment Ecology Geosciences Freshwater & Marine Ecology Environmental Management Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Aquatic Science Environmental Science

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