Accession Number:

ADA634810

Title:

A Study of the Structure of the Near-coastal Zone Water Column Using Numerical Simulations

Descriptive Note:

Corporate Author:

STANFORD UNIV CA DEPT OF CIVIL AND ENVIRONMENTAL ENGINEERING

Report Date:

1997-09-30

Pagination or Media Count:

6.0

Abstract:

LONG-TERM GOALS. Our long-term goal is to understand how flows in near-coastal zone 20m to 100m respond to a variety of forcing mechanisms including wind stresses, tidal pressure gradients, surface waves, surface heating and cooling, surface wave-bottom current interaction, and tidally generated bottom boundary currents. Because the nature of this response varies throughout the water column and depends strongly on the non-linear coupling of stratification, turbulence and flow structure characterizing the structure of the water column in this environment is a very difficult field measurement task. OBJECTIVES. It is possible to gain some insight into the physics, and into our ability to model or parameterize the physics, by looking at a more idealized version of this problem using a variety of numerical simulation approaches. We plan to develope Large Eddy Simulation Models of the flow structure in the stratified water column in the near-coastal zone which are typically subject to surface heating fluxes, wind stirring, and tidally generated bottom turbulence. Using these simulation tools we shall study the physics, and how to parameterize it, for two related flow problems in particular Stratified tidal flows, i.e., stratified flows with oscillating pressure gradients Wavy turbulent flows, i.e., unstratified channel flows with waves.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE