Propagation of internal tides generated near Luzon Strait: Observations from autonomous gliders

TitlePropagation of internal tides generated near Luzon Strait: Observations from autonomous gliders
Publication TypeJournal Article
Year of Publication2013
AuthorsRainville L, Lee CM, Rudnick D.L, Yang K.C
JournalJournal of Geophysical Research-Oceans
Volume118
Pagination4125-4138
Date Published2013/09
Type of ArticleArticle
ISBN Number2169-9275
Accession NumberWOS:000326230200009
Keywordsgliders; hawaiian; internal tides; internal waves; Luzon Strait; oceanographic research; pacific-ocean; part i; ridge; south china sea; surface manifestation; tides; underwater gliders; variability; vertical water velocities; waves
Abstract

The vertical isopycnal displacements associated with internal waves generated by the barotropic tidal currents in the vicinity of Luzon Strait are estimated using measurements collected by autonomous underwater gliders. Nearly 23,000 profiles from Seagliders and Spray gliders, collected during 29 different missions since 2007, are used to estimate the amplitude and phase of the linear semidiurnal and diurnal internal waves in this energetic region, particularly in the previously poorly sampled area near the eastern ridge and on the Pacific side of Luzon Strait. The mean and variability of the internal wave field in the upper 1000 m of the water column are described. The phase progression of internal waves as they propagate away from their generation sites is captured directly. The glider-based observations are used to map the mode-1 semidiurnal and diurnal internal wave fields, providing the baroclinic energy flux over a roughly 600 km x 800 km region based strictly on in situ observations.

DOI10.1002/jgrc.20293
Short TitleJ Geophys Res-Oceans
Integrated Research Themes: 
Student Publication: 
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