CTBTO hydroacoustic data used to aid search for missing submarine ARA San Juan
24 November 2017
What did CTBTO detect?
What are hydroacoustic stations?
Sound travels very efficiently under water and the oceans are very “noisy”. Our engineers had to sift through a very large volume of data from underwater hydrophones in far-reaching parts of the world, looking for signals which could be related to the submarine’s disappearance. Also, the IMS is designed to detect larger events: nuclear explosions. This means that a smaller signal such as the one that was detected in this case is much more difficult to isolate and locate. Picking up evidence of a relatively small source of sound in the ocean requires manual analysis of data and custom-designed software. Many thousands of possible signals from sources of noise had to be sorted through and in some cases new algorithms and approaches were developed to filter out other noise and to find this signal. This effort took considerable time by dedicated scientists.
Was this an explosion? How big was the explosion?
How sure are you that this is from the missing submarine ARA San Juan?
How will this information help?
It is now confirmed the missing Argentine submarine was found in the vicinity of where CTBTO sensors detected & located a noise a few hours after its last contact 1 yr ago. My deepest sympathy to relatives of crew https://t.co/u1EfaGAM6K More: https://t.co/g3WXIMINkf #ARASanJuan pic.twitter.com/mrISgaHQyS— Lassina Zerbo (@SinaZerbo) November 18, 2018