Accession Number:

AD0684787

Title:

AN INVESTIGATION OF ENVIRONMENTAL FACTORS AFFECTING THE NEAR-BOTTOM CURRENTS IN THE MONTEREY SUBMARINE CANYON.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1968-12-01

Pagination or Media Count:

77.0

Abstract:

Continuous bottom current measurements were taken in the head of Monterey Submarine Canyon in water depths ranging from 80 to 110 fathoms utilizing an in situ Savonius Rotor current measuring system placed approximately 40 feet above the bottom. Concurrent wind, wave, and tidal data were collected with the current measurements. Basic statistical parameters and power spectra were then computed for each time series obtained. Current speeds in excess of one knot were measured, with the current direction being predominantly along the canyon axis. Water temperature, current speed and direction all exhibit cyclic fluctuations of a periodicity equal to that of the semidiurnal tide. Cold, high-speed currents flow up-canyon landward on the falling tide while warmer, slower currents flow down-canyon seaward on the rising tide. Wind and wave conditions do not appear to have any significant effects on the near-bottom currents. Author

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE