Accession Number:

ADA633833

Title:

Internal Circulation In Tidal Channels And Straits and Internal Circulation In Tidal Channels And Straits: A Comparison Of Observed And Numerical Turbulence Estimates (AASERT)

Descriptive Note:

Corporate Author:

OREGON GRADUATE INST OF SCIENCE AND TECHNOLOGY PORTLAND DEPT OF ENVIRONMENTAL SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1999-09-30

Pagination or Media Count:

8.0

Abstract:

LONG-TERM GOAL. The principal long-term objectives of this project and its associated AASERT are to provide a 3-D conceptual understanding of circulation and scalar transport in the numerous estuaries and straits worldwide with both strong tides and buoyancy forcing, improved analysis methods based on continuous wavelet transforms for defining the non-stationary and non-linear processes that drive circulation in these environments, and in concert with related projects, an improved understanding of vertical turbulent mixing processes in stratified estuarine flows. OBJECTIVES. Present work focuses on the 3-D distribution of the along-channel circulation, hydraulic control and mixing at the estuary entrance, and near-bed and interfacial mixing processes in stratified environments. Specific objectives include test a 3-D mixed analyticalnumerical circulation model for sub-areas of the Columbia River estuary, to calculate tidal and residual flow during periods for which data are available examine hydraulic control effects near the mouth of the Columbia River using a three-layer model that includes mixing between layers and bed dissipation analyze near-bed and interfacial turbulent momentum, salt and sediment flux data to better understand vertical fluxes of momentum, salt and sediment in stratified environments develop and disseminate to the oceanographic community wavelet transform tidal analysis and turbulence estimation tools and use wavelet and other tools to analyze key data sets.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE