SONAR Source Levels - Haro Strait - April 23, 2003
|
Sound:
|
Received dB re 1 uPa |
ESTIMATED Range
|
Depth
|
Cylindrical Spreading dB re 1 uPa @ 1 m Transition at Depth/2 |
Cylindrical Spreading dB re 1 uPa @ 1 m Transition at Depth*2 |
|
Sonar
|
149 dB
|
20000 m
|
200 m
|
212 dB
|
218 dB
|
|
Sonar
|
149 dB
|
20000 m
|
400 m
|
215 dB
|
221 dB
|