Archaeologists are studying how to use high-resoultion seismic to find underwater sites.

The open access paper is:

Grøn, O., Boldreel, L.O., Hermand, J.P., Rasmussen, H., Dell’Anno, A., Cvikel, D., Galili, E., Madsen,
B. and Nørmark, E., 2018. Detecting human-knapped flint with marine high-resolution reflection
seismics: A preliminary study of new possibilities for subsea mapping of submerged Stone Age
sites. Underwater Technology, 35(2), pp.35-49.

[www.researchgate.net]
[documentatiecentrum.watlab.be]
[www.ingentaconnect.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)