Accession Number : ADA262471


Title :   Chapter 16. Whitecap Measurements


Corporate Author : CONNECTICUT UNIV GROTON MARINE SCIENCES INST


Personal Author(s) : Monahan, E C ; Wilson, M B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262471.pdf


Report Date : Jan 1993


Pagination or Media Count : 26


Abstract : Video cameras and tape recorders were installed on research vessels taking part in the Gulf of Alaska experiments to collect the data necessary for the determination of the fraction of the sea surface covered by Stage A whitecaps (spilling wave crests). Two systems were installed; one on the R/V CORY CHOUEST and the other on the R/V J.P. TULLEY. Each system consisted of two NTSC format video cameras, VHS tape recorders, monitors, and date/time encoders. The cameras were mounted high in each ship's superstructure, and the cameras depressed to view the surface of the ocean from just above the horizon to the near sea surface at the bottom of the picture. Time was encoded to allow synchronization of recorded events with other recorded parameters. Video images were recorded during daylight hours for the days on station. The VHS format recorder allowed continuous recording for a period of eight hours. This data set was by far the largest we at the Marine Sciences Institute have been able to collect and analyze. It provides the basis for an assessment of how whitecap coverage varies as the wind conditions change.


Descriptors :   *OCEAN SURFACE , *DATA ACQUISITION , *VIDEO TAPE RECORDING , OCEANOGRAPHIC DATA , CAMERAS , RESEARCH SHIPS , TAPE RECORDING


Subject Categories : Physical and Dynamic Oceanography
      Test Facilities, Equipment and Methods
      Recording and Playback Devices


Distribution Statement : APPROVED FOR PUBLIC RELEASE