Wave evolution across the Louisiana shelf Journal Article


Authors: Engelstad, Anita; Janssen, T. T.; Herbers, T. H. C.; van Vledder, Gerbrant; Elgar, Steve; Raubenheimer, Britt; Trainor, Lincoln; Garcia-Garcia, Ana
Article Title: Wave evolution across the Louisiana shelf
Abstract: Observations and third-generation wave model hindcasts of ocean surface gravity waves propagating across the Louisiana shelf show that the effects of the mud environment on wave evolution are complex and episodic. Whereas low-frequency waves (0.04–0.20 Hz) show a consistent decay similar to earlier studies, the presence of mud also appears to suppress the development of short waves (0.20–0.25 Hz) under fetch-limited growth conditions. Significant suppression of wave development under wind-forced conditions is found to occur almost exclusively during easterly winds when satellite images show the Atchafalaya mud plume extends into the study area. These results suggest that episodic sediment suspension events with high mud concentrations in the upper water column can affect the evolution of wind waves.
Keywords: Wave-mud interaction; Fetch-limted wave growth; Wave damping; Louisiana shelf; Atchafalaya mud plume
Journal Title: Continental Shelf Research
Volume: 52
Issue: 1
ISSN: 0278-4343
Publisher: Elsevier  
Date Published: 2013
Start Page: 190
End Page: 202
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