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According to New Scientist magazine (May 4, 2002, p. 13), the researchers found an underwater delta south of the Bosporus. There was evidence for a strong flow of fresh water out of the Black Sea in the 8th millennium BCE.

That's particularly interesting because Ryan and Pitman cite an old anecdote by Diodorus which doesn't support their view (that there was a single extraordinary flood event in human times), but claim that it does. The Black Sea would have been filling up with glacial meltwater at the same time as the rest of the world's seas, and arguably should have been doing so at a faster pace.

The story from Diodorus involves a then-extant local tradition on Samothrace in the Aegean that the flooding of the peninsula (the island seen today was indeed a peninsula during relatively recent human times) resulted from an outflow from the Black Sea, and that Diodorus was shown the still-visible remains of the submerged structures of the earlier town. Ryan and Pitman attribute the first detail to an implausible scenario:

the ancestors of the inhabitants of that island had lived on an unidentified peninsula in the Black Sea, now submerged
moved at the time of the flood to an island in the Aegean, an unknown number of miles, accomplished on foot as the flood made navigation into the Aegean impossible
retained the story for 7000 years
reversed the direction of the flow in order to make sense of it
pointed to the submerged structures, which must be coincidence
another people built the submerged structures many centuries before the Aegean _gradually_ rose and flooded the Black Sea, or
that the structures, whatever they were, were natural and in any case may still exist

If natural, the submerged structures would be serendipitous or even the origin of the story. If they led to the Samothracians either making up the story of the flood, or distorting some account of the actual Black Sea flood, it would be an amazing coincidence. This would however make the rest of Ryan and Pitman's supposed explanation incredible, if an 8000 year old tradition to explain apparently submerged structures is not already incredible.

Understand that the Ice Age ended in three 'surge' periods and a couple times in between, it went back to cold periods. The surge periods were (about) 15k, 11-12k and 7-8k years ago. I think it was during the 11-12k periods that the ice, snow and glaciers north and east of the Black Sea melted and caused a fresh water flood of the Black Sea that over-flowed and emptied into the Mediterranean.

I also believe that the Mediterranean was blocked at Gilbralter in probably a couple different place within the sea itself. I believe the Mediterrean was severely dessicated during the Ice Age and it was only until the 7-8k melt that the 'plug' at Gilbralter was breached with sea water streaming in and doing a cascade breach of the internal 'dams' , finalizing with the salt water breach into the Black Sea 7-8k years ago.

The Mediterranean completely dried out a number of times because there are salt deposits on the bottom that are 1-2 miles thick. The last time it completely dried out was 5 million years ago.