Accession Number:

AD0725131

Title:

Underwater Acoustic Measurements in the Vicinity of the Exit Point of an Electric Power Plant Cooling Water Discharge Pipe,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1971-03-05

Pagination or Media Count:

19.0

Abstract:

The acoustic background noise in the vicinity of the exit point of an electrical power plant cooling water discharge pipe has been measured with a portable sound level meter. The noise levels in five frequency bands from 28 to 9000 Hz were recorded for several locations and compared with some recent oceanic shallow water ambient noise data. Up to approximately 500 Hz, the background noise level near the exit point does not differ greatly from the oceanic shallow water noise level. Beyond 500 Hz, the noise level near the exit point remains relatively constant and higher than oceanic levels. These higher levels have been attributed to the presence of snapping shrimp. Author

Subject Categories:

  • Electric Power Production and Distribution
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE