Accession Number : AD0619836

Title :   SONAR PROBING IN NARRAGANSETT BAY,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Edgerton,Harold E. ; Payson,Harold ; Yules,John

Report Date : 20 OCT 1964

Pagination or Media Count : 2

Abstract : A 12-kilocycle pulsed transducer, with a 0.1 millisecond duration, is used for tracing a sub-bottom rock profile in Narragansett Bay. The short sonar pulse of high energy is produced by a capacitor discharge. Over-the-side installation of the transducer permits the use of any boat or ship for the survey work. Coherent presentation of the data on a wet paper recorder gives an instantaneous visual record. Across a northsouth rock formation, a recurring rise and fall of the rock is shown throughout the sedimentary deposit. (Author)

Descriptors :   (*OCEAN BOTTOM TOPOGRAPHY, NARRAGANSETT BAY), (*NARRAGANSETT BAY, OCEAN BOTTOM TOPOGRAPHY), SEDIMENTARY ROCK, SONAR, OCEANOGRAPHY

Distribution Statement : APPROVED FOR PUBLIC RELEASE