Accession Number:
AD0619836
Title:
SONAR PROBING IN NARRAGANSETT BAY,
Descriptive Note:
Corporate Author:
MASSACHUSETTS INST OF TECH CAMBRIDGE
Personal Author(s):
Report Date:
1964-10-20
Pagination or Media Count:
2.0
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