Lateral dispersion of dye and drifters in the center of a very large lake SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Lateral dispersion of dye and drifters in the center of a very large lake
Author(s)
Choi, Jun; Troy, Cary; Hawley, Nathan; McCormick, Michael; Wells, Mathew
Publication Year
2020-02
Abstract
To better understand lateral dispersion of buoyant and nonbuoyant pollutants within the surface waters of large lakes, two lateral dispersion experiments were carried out in Lake Michigan during the stratified period: (1) a dye tracking experiment lasting 1 d; and (2) a drifter tracking experiment lasting 24 d. Both the dye patch and drifters were surface-released at the center of Lake Michigan's southern basin. Near-surface shear induced by near-inertial Poincare waves partially explains elevated dye dispersion rates (1.5-4.2 m(2) s(-1)). During the largely windless first 5 d of the drifter release, the drifters exhibited nearly scale-independent dispersion (K similar to L-0.2), with an average dispersion coefficient of 0.14 m(2) s(-1). Scale-dependent drifter dispersion ensued after 5 d, with K similar to L-1.09 and corresponding dispersion coefficients of 0.3-2.0 m(2) s(-1) for length scales L = 1500-8000 m. The largest drifter dispersion rates were found to be associated with lateral shear-induced spreading along a thermal front. Comparisons with other systems show a wide range of spreading rates for large lakes, and larger rates in both the ocean and the Gulf of Mexico, which may be caused by the relative absence of submesoscale processes in offshore Lake Michigan.
ISSN
0024-3590
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38740
DOI
10.1002/lno.11302
Bibliographic Citation
LIMNOLOGY AND OCEANOGRAPHY, v.65, no.2, pp.336 - 348, 2020
Publisher
WILEY
Subject
DIFFUSION; TRANSPORT; EDDIES; MODEL
Type
Article
Language
English
Document Type
Article
Publisher
WILEY
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