Accession Number : AD0916982

Title :   Underwater Site Surveying for Cable Installations.

Descriptive Note : Technical note Jan-Jun 73,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s) : Ciani, J. B. ; Hironaka, M. C. ; Hitchcock, R. D. ; Malloy, R. J.

Report Date : JAN 1974

Pagination or Media Count : 40

Abstract : This study was performed to determine significant properties of nearshore and inshore underwater sites for submarine cable installation, the measurement accuracies required, and the hardware and techniques required to obtain data. The hazards to cables and the causes of cable failures are examined. It was found that all significant properties except seafloor and subbottom topography through sand can be measured to the required accuracies. Equipment is recommended that will perform to the required accuracies. It is recommended that: (1) this equipment be assembled into a site survey kit and evaluated; (2) the utility and accuracy of sonic methods of seafloor and subbottom topographic survey in the surf zone be determined; and (3) supplementary procedures be developed for the surf zone where sonic methods cannot be used.

Descriptors :   (*ELECTRIC CABLES, COASTAL REGIONS), (*HYDROGRAPHIC SURVEYING, ACCURACY), SITE SELECTION, REQUIREMENTS, OCEAN BOTTOM TOPOGRAPHY, SUBSURFACE, SAND, HAZARDS, OCEAN TIDES, OCEAN WAVES, OCEAN CURRENTS, FAILURE, UNDERWATER EQUIPMENT, OCEANOGRAPHIC EQUIPMENT, OXYGEN, PH, SALINITY, SOUND RANGING, STORMS, EARTHQUAKES, MARINE BIOLOGY, INSTALLATION, OFFSHORE, INSHORE AREAS.

Subject Categories : Physical and Dynamic Oceanography
      Electrical and Electronic Equipment
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE