Serendipitous Internal Wave Signals in Deep Argo Data

Serendipitous measurements of deep internal wave signatures are evident in oscillatory variations around the background descent rates reported by one model Deep Argo float. For 10,045 profiles analyzed here, average root-mean-square vertical velocity variances, , from 1,000 m to seafloor, is 0.0045 s−1, with a 5%–95% range 0.0028–0.0067 s−1. Dominant wavelengths, λz, estimated integrals lagged autocorrelation sequences have an value 757 m, 493–1,108 m. Both and λz exhibit regional among within some ocean basins, generally larger shorter regions rougher bathymetry or stronger currents. These correlations both expected, since should be found near generation regions.