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Observations of Long Nonlinear Internal Waves in a Lake
Publisher: American Meteorological Society
Abstract: This paper describes observations of large-amplitude, long internal waves in Babine Lake. A unique feature of the observations is that they were taken simultaneously at several different points along the major axis. This ...
Patterns of Bubble Clouds organized by Langmuir Circulation
Publisher: American Meteorological Society
Abstract: A commonly observed property of near-surface bubble distributions is their collective organization into long rows aligned with the wind under the influence of Langmuir circulation. Time series observations with sonars ...
Gas Bubbles as Oceanographic Tracers
Publisher: American Meteorological Society
Abstract: Air bubbles can be used as oceanographic tracers that indicate the strength of a downwelling current by which they are subducted. In a tidal front in the Fraser Estuary, British Columbia, Canada, vertical currents of up ...
Wind Mixing and Restratification in a Lake near the Temperature of Maximum Density
Publisher: American Meteorological Society
Abstract: The cooling of a freshwater take provides an opportunity for studying wind mixing and restratification under the peculiar conditions associated with a density maximum. The concepts are explored using a mixing-layer model ...
A Signal-processing Scheme for Passive Acoustical Mapping of Breaking Surface Waves
Publisher: American Meteorological Society
Abstract: An acoustical system is described with emphasis on its signal-processing scheme. The system consists of a small broadband hydrophone array of span 8.5 m and 5-kHz bandwidth, which is able to track individual breaking surface ...
The Measurement of Bubble-Size Distributions by Acoustical Backscatter
Publisher: American Meteorological Society
Abstract: A multifrequency acoustical-backscatter technique is described for determining the size distribution of bubbles with radii between 8 and 130 µm. The method makes use of the resonance in the microbubbles and operates at six ...
Acoustical Measurement of Current and Vorticity beneath Ice
Publisher: American Meteorological Society
Abstract: An acoustical instrument has been developed to measure path-averaged horizontal current and vorticity in the subice boundary layer of the eastern Arctic during the spring of 1989. A triangular acoustic array of side 200 m ...
Instabilities in an Internal Solitary-like Wave on the Oregon Shelf
Publisher: American Meteorological Society
Abstract: Observations of internal solitary-like waves (ISWs) on the Oregon Shelf suggest the presence of Kelvin?Helmholtz billows in the pycnocline and larger-scale overturns at the back of the wave above the pycnocline. Numerical ...
The Generation and Evolution of Nonlinear Internal Waves in the Deep Basin of the South China Sea
Publisher: American Meteorological Society
Abstract: ime series observations of nonlinear internal waves in the deep basin of the South China Sea are used to evaluate mechanisms for their generation and evolution. Internal tides are generated by tidal currents over ridges ...
Large Eddy Simulations of Upper-Ocean Response to a Midlatitude Storm and Comparison with Observations
Publisher: American Meteorological Society
Abstract: A large eddy simulation (LES) model is used to investigate an upper-ocean response to a fall storm in the open ocean of the North Pacific Ocean. The storm is characterized by rapid increases in wind speed and surface heat ...