Accession Number : AD0844284

Title :   A Technique for the Location of Buried Sand and Gravel Deposits in Shallow-Water Areas.

Descriptive Note : Informal rept.,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : Breslau, Lloyd ; Edgerton, Harold

Report Date : OCT 1968

Pagination or Media Count : 16

Abstract : The location and delineation of buried sand and gravel deposits in shallow water areas can be accomplished by continuous seismic profiling from a ship underway. A survey using the EG and G 'Mud Penetrator' seismic profiling system has previously been performed in the Gulf of La Spezia, Italy, and resulted in the mapping of a sand and gravel bar buried more than 10 feet below the floor of this mud-bottomed area. Recently, continuous seismic profiling was performed in a river in the Mekong Delta, South Vietnam, and evidence of the existence of some sub-bottom structure was observed. The continuous seismic profiling technique operates on the principle of generating an acoustic pulse in the water and recording the arrival times of the acoustic echoes from the bottom and sub-bottom on an analogue correlation recorder. Consequently, the continuous seismic profiling technique using the 'Mud Penetrator' is applicable to the military task of prospecting for constructional materials in water-covered mud-bottomed areas. (Author)

Descriptors :   (*GEOPHYSICAL PROSPECTING, NATURAL RESOURCES), SAND, GRAVEL, DEPOSITS, SEISMOLOGY, MAPPING, BATHYTHERMOGRAPH DATA, CONSTRUCTION MATERIALS, MILITARY REQUIREMENTS, DETECTORS, MUD, ITALY, SHALLOW WATER.

Subject Categories : Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE