Accession Number : ADA322255

Title :   Observations and Modeling of the Internal Tide in a Submarine Canyon.

Descriptive Note : Doctoral dissertation,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Petruncio, Emil T.

PDF Url : ADA322255

Report Date : SEP 1996

Pagination or Media Count : 193

Abstract : Shipboard ADCP and CTD measurements were conducted in Monterey Submarine Canyon in April and October 1994 to determine the propagation characteristics and energy levels of the semidiurnal internal tide. The measurements reveal a bottom intensified internal tide propagating energy up canyon. The region of strongest motion is in a beam 150-200 m thick, centered approximately 150 m above the Canyon floor. Along canyon baroclinic M2 currents are typically 15-20 cm/s, an order of magnitude larger than the estimated barotropic tidal currents. In April 1994, the internal tidal beam is well described by a progressive wave, while in October 1994, the signal is standing along and perpendicular to the beam. The Princeton Ocean Model was used to study the generation and propagation of semidiurnal internal tides in submarine canyons and to investigate their sensitivity to canyon shape.

Descriptors :   *TIDAL CURRENTS, *SUBMARINE CANYONS, THESES, SLOPE, NUMERICAL METHODS AND PROCEDURES, OCEAN MODELS, INTERNAL WAVES.

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE