Accession Number : AD0863331

Title :   Underwater Photographs in the Strait of Gibraltar.

Descriptive Note : Technical memo.,

Corporate Author : SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s) : Allan, T. D.

Report Date : 15 OCT 1966

Pagination or Media Count : 22

Abstract : Underwater photographs of the sea-floor taken at stations along the Gibraltar-Ceuta axis are presented. The sea-floor in the centre of the Strait appears to be composed mainly of compacted sand in which extensive ripple marks are evident. These ripples, together with photographic evidence of suspended matter above the sea-floor, confirm the existence of strong bottom currents. The patchiness of the bottom between Gibraltar and Ceuta is confirmed but many more photographs and grab samples would be required to gain a detailed knowledge. (Author)

Descriptors :   (*UNDERWATER PHOTOGRAPHY, GIBRALTAR STRAIT), (*OCEANOGRAPHY, UNDERWATER PHOTOGRAPHY), OCEAN CURRENTS, REFLECTION, OCEAN BOTTOM, PHOTOGRAPHIC IMAGES, ITALY, OCEANOGRAPHIC SHIPS, UNDERWATER CAMERAS, HYDROPHONES, CAMERA SHUTTERS, OCEAN WAVES, OCEAN BOTTOM SAMPLING.

Subject Categories : Physical and Dynamic Oceanography
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE