Jennifer Coelho-Teeluck is a Canadian researcher who proposed the isthmus of Central America as the location of Atlantis. In a paper presented to the 2008 Atlantis Conference in Athens she equated Plato’s “shoals of mud” with the narrow neck of land where Panama is. She speculates further that a global catastrophe around 10,000 BC led to the destruction of Atlantis and led to the dispersal of survivors north and southward. Elsewhere(a) she links this catastrophe to the theory of Charles Hapgood, which postulates the movement of the outer crust by a number of degrees.
(a) http://www.questmagazine.com/z_jennifer_teeluck_qm200512_atlantis-destruction-planetary-phenomenon.html (Offline November 2016)