Accession Number:

AD0743085

Title:

The Probable Distribution of Whales as False Sonar Targets in the North Pacific Ocean by Analysis of Whaling Data.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

• Rinaldi,Ronald Daniel

Report Date:

1972-03-01

Pagination or Media Count:

181.0

Abstract:

False Sonar targets present a serious unpredicted problem to U. S. Navy ASW units. It is believed that planning and operations could be enhanced by a forecasting capability for whale distribution. As a possible solution to this problem, a modified form of the Transect Method of population estimation is applied to whaling data to calculate probable numbers of false targets per 1000 nautical miles of steaming with a 1000 yard sonar range. Japanese and Russian whale fishery data are analyzed by the q and Expected Catch methods of population dynamics to obtain two independent estimates of the populations of fin, sei and sperm whales. The mean of the two estimates is applied to the equation along with a term for assumed ideal sonar conditions. Author

Descriptors:

• (*SONAR TARGETS
• *CETACEA)
• ANTISUBMARINE WARFARE
• PROBABILITY
• PACIFIC OCEAN
• PREDICTIONS
• POPULATION(MATHEMATICS)
• THESES
• COMPUTER PROGRAMS

Subject Categories:

• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE