Accession Number:

AD0712215

Title:

EFFECTS OF AN ARTIFICIAL SEA SLICK UPON THE ATMOSPHERE AND THE OCEAN

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF METEOROLOGY AND PHYSICAL OCEANOGRAPHY

Report Date:

1970-02-20

Pagination or Media Count:

6.0

Abstract:

Vertical mean wind profiles, hot-film data, and wave height data measured during the passage of an artificial sea slick are compared with similar measurements without a sea slick. The effects of the slick are modifications of profile roughness length z0, and a possible increase in mean wind speed. Power spectral density plots of wave records obtained before, during and after the slick show wave energy modifications for wavelengths up to 10 m. Coherence values computed from a cross-spectral density of the wind field and simultaneously measured wave field both during and after the slick demonstrate the importance of small waves to air-sea interaction processes. Phase angles indicate the maximum horizontal velocity occurs over the wave trough for all spectral components, some of which are above and some below the wind-wave matched layer. During a slick, however, the horizontal velocity maximum occurs over the wave crest for those waves remaining coherent with the wind field.

Subject Categories:

  • Physical Chemistry
  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE