The influence of different morphological units on the turbulent flow characteristics in step-pool mountain streams.

ABSTRACT: The morphology of step-pools is often implemented for ecological restoration and for the creation of close-to-nature fish passes. Step-pools display spatio-temporal variations in bed and flow characteristics due to meso-scale units such as step, tread, base of step, and pool. Exclusive research on the effects of bed variations in step-pools on the flow dynamics is limited. Here, we conducted laboratory experiments on a physical model downscaled from a field site in the Western Ghats, Kerala, India. The results of Kruskal-Wallis ANOVA show significant differences in the velocity and turbulent intensities for the morphological units. A regression equation of the form Power-Allometric1 has been proposed to relate the normalized turbulent kinetic energy with the velocity magnitude. The present

SUBMITTER: Thazhathe Kalathil S 

PROVIDER: S-EPMC8505520 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature