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Scientists at Cardiff University in the UK have examined acoustic-gravity waves picked up by two hydroacoustic stations in the Indian Ocean, one off Cape Leeuwin in Western Australia and the other at Diego Garcia further north.
Each of the two stations, operated by the Comprehensive Nuclear-Test-Ban Treaty Organisation, has three "hydrophones" or underwater microphones, which continuously record sound waves in the ocean.
Signals from both stations show sound waves that could have come from a large object, such as a meteorite or an aircraft hitting the water.
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"Our research into these waves has moved on since we first proposed the idea in 2017," Dr Kadri wrote in The Conversation.
"Previous analysis considered the sea floor to be rigid, which would not allow the radiating waves to move through it.
"However, if the elasticity of the sea floor is taken into account, then the waves will travel at this enhanced speed.
"When acoustic-gravity waves start travelling through the sea floor their propagation speed boosts to over 3,500 m/s, from the 1,500m/s they would have been travelling at through the water."
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Inexplicably, 25 minutes of data from the Diego Garcia station — where the US has a secretive military base — is missing.
Dr Kadri said the signals his team analysed indicated a 25-minute shutdown that cannot be explained by a technical failure or maintenance, given the three hydrophones operate independently of each other.
He said the CTBTO has failed to give any reason why the data is missing, though either military action or Malaysia Airlines flight MH370 may have caused the system shutdown.
originally posted by: ressiv
plane confiscated to Diego Garcia refuelled ….from there they let it crasch near Madagaskar