REFERENCES 
1. Navy Electronics Laboratory Report 1260, Underwater 
Acoustic Ambient-Noise and Transmission Tests West of 
San Clemente Island, by G. M. Wenz, M. A. Calderon, 
and R. F. Scanlan, CONFIDENTIAL, 18 January 1965 
2. Wenz, G. M., ''Curious Noises and the Sonic Environ- 
ment in the Ocean,'' p. 101-119 in Symposium on Marine 
Bio-Acoustics, Lerner Marine Laboratory, 1963, Marine 
Bio-Acoustics, Macmillan, 1964 
3. Navy Electronics Laboratory Report 1115, Shallow 
Water Ambient Noise Survey at the NEL Oceanographic 
Tower, by G. A. Clapp, CONFIDENTIAL, 9 July 1962 
4, Clapp, G. A., ‘Periodic Variations of the Underwater 
Ambient-Noise Level of Biological Origin (Abstract),"' 
Acoustical Society of America. JoumMalye vis 3 Ones 1994, 
October 1964 
5. Calderon, M., ''Low-Frequency Underwater Pulsed 
Noise Observed in the Pacific Ocean,'' U. S. Navy Journal 
of Underwater Acoustics, v. 12, p. 729-742, CONFIDEN- 
TIAL, October 1962 
6. Jensvold, R. D. and Wright, K. A., ''Some Very Low- 
Frequency Pulsed Noises in the Atlantic Ocean," U. S. 
Navy Journal of Underwater Acoustics, v. 9, p. 685-704, 
CONFIDENTIAL, October 1959 
7. Patterson, B. and Hamilton, G. R., ''Low-Frequency 
Pulsed Signals Received on Bermuda Hydrophones,"' 
U. S. Navy Journal of Underwater Acoustics, v. 11, p. 89- 
108, CONFIDENTIAL, January 1961 
41 
