Accession Number:

AD0691380

Title:

DEEP-SEA COREHEAD CAMERA PHOTOGRAPHY AND PISTON CORING,

Descriptive Note:

Corporate Author:

WOODS HOLE OCEANOGRAPHIC INSTITUTION MASS

Report Date:

1969-03-01

Pagination or Media Count:

82.0

Abstract:

Cameras were mounted in a newly designed corehead of a piston corer and used to photograph coring operations during 36 stations on CHAIN cruise 75 and 28 stations on ATLANTIS II cruise 42. Through the analysis of these photographs, the deep-water operation of a piston corer during its descent, tripping, impact with the bottom, and ascent has been studied, providing information on the corers stability, effectiveness in obtaining a bottom sample, and influence on the nearby sea-floor. Accurate determinations of the amount of penetration were possible, allowing comparisons to be made with the more indirect methods of determining penetration and with the length of core recovered. Sediment clouds produced by bottom currents were noticed in many of the bottom photographs. A number of suggestions are made for future piston coring operations. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE