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Extramural Research

Grantee Research Project Results

NCER Grantee Research Project Results

Assessment of the Effects of Rough Bed and Complex Bed Topographies on Turbulence Structures in Streams

EPA Grant Number: GF9501144
Title: Assessment of the Effects of Rough Bed and Complex Bed Topographies on Turbulence Structures in Streams
Investigators: Byrd, Tracy W.
Institution: Florida State University
EPA Project Officer: Broadway, Virginia
Project Period: August 20, 1995 through January 1, 2000
Project Amount: $34,367
RFA: STAR Graduate Fellowships (1995)
Research Category: Academic Fellowships , Ecological Indicators/Assessment/Restoration , Fellowship - Earth

Description:

Objective:

The purpose of this study is to characterize the effects of rough bed surfaces and complex topographies on turbulence in streams. The work is intended to clarify how these factors influence longitudinal advection and dispersion of heat and mass, and also will bear on predicting the motions of flood waves within rough, irregular channels. The specific approach is to collect and statistically analyze detailed velocity measurements collected within two reaches that reflect the effects of both a rough bed and strong convective accelerations associated with a complex bed topography, and which do not exhibit logarithmic forms. The results will be used to assess the statistical confidence that can be placed on model predictions of flow rates and transport when bed roughness and convective acceleration data are limited or are not available.

Supplemental Keywords:

RFA, Scientific Discipline, Ecosystem Protection/Environmental Exposure & Risk, Ecology, Ecosystem/Assessment/Indicators, Ecosystem Protection, Ecological Effects - Environmental Exposure & Risk, computing technology, Ecological Risk Assessment, Ecology and Ecosystems, Ecological Indicators, stream turbulence, predictive models, predictions of flow rates and transport, complex bed topographies, topographies and stream turbulence, rough bed topographies

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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