Professor Hans Pettersson (1888-1966), a renowned Swedish scientist, led a survey of the Atlantic in 1947, following which he stated that the Mid Atlantic Ridge between the Azores was mainly above water 15,000 years ago. Additionally, he announced^(a) that the expedition had discovered evidence of a catastrophic event that probably had global effects. Subsequently, he wrote a book^[503] on Atlantis which another physicist, Stefan Meyer, translated into German.

(a) http://www.varchive.org/ce/ocean.htm