Perth, June 5 (): Perth university researchers say there is a thin chance an underwater sound of low-frequency that they have been studying could be one from the missing Malaysian Airlines aircraft that crashed into Indian Ocean.
However, senior research fellow Alec Duncan of Curtin University said the sound recorded by the hydrophones at around 9.30 am (WST) off Rottnest Island on March 8 could have happened from a normal occurrence such as a minor earth tremor.
When Perth researchers put forth the rare underwater sound noted around the same time when the Malaysia Airlines Flight MH370 vanished, they said that the probability of the sound could be related to the missing plane at less than 20 per cent.
For weeks, researchers have been analysing the very low frequency sound to check whether the sound was “the effect of the aircraft on the water or the collapse of aircraft parts as it sank,” Duncan said. The source of the noise, he said, is likely to be a natural event.
Duncan said signals with low frequency could travel through water thousands of miles under favourable conditions, at around 1 mile per second. But, the sound, at the moment looks to be unpredictable with other facts about the position of the airliner, he said.
That was the reason Curtin University researchers believed the sound to have come from a region thousands of miles north-west of the present search region in southern Indian Ocean. Even then, they could not pinpoint the source.
The aircraft search co-ordinators, the Joint Agency Coordination Centre JACC, said analysis of Curtin researchers on the signals was measured by the Australian Transport Safety Bureau (ATSB).
JACC said even though Curtin University has determined and ATSB had agreed, the present outcomes are not well-matched with the analysis of the international search team of the most possible region where MH370 crashed into the water.