Originally Posted by Sheep Guts
Commodore Leavy said that P-3C Orions would drop sonar buoys in the water today around the area of the Ocean Shield search area. He was saying during the JACC news conference today the RAAF technicians had modified the sonar buoys to detect 37.5 KHZ signal. He described how when sonar buoys hit the water they drop on a 1000ft wire a hydrophone into the sea below.
The buoys could be inoperative if tuned to 37.5 kHz.
Angus Houston has reported that the signals detected by Ocean Shield pinger locator are on 33.331 kHz.
Could that frequency drift of -11% be caused by hydrostatic pressure ?
I understand that a pressure of 50 MPa is compatible with a +/- 10^5 ppm drift.