Stephen Clifford and Timothy Parker, in 2001, published the results of their attempt to identify shoreline evidence on Mars. Neither Clifford and Parker nor di Achille achieved the next logical step – fitting an ocean to their evidence although di Achille does show a superimposed ocean in one of his illustrations.

A effort that does achieve a surprisingly close match to the Deuteronilus and Arabia shorelines delineated by Clifford and Parker is at the following web site:

http://mysite.verizon.net/rickmsmith/MarsOceanProject.html

The fit was achieved by superimposing an ocean with a tide, something that di Achille apparently did not do.

It looks as though Clifford and Parker chose the right criteria in their search for residual shorelines on Mars.

Not a question really.
Mars is smaller, exerts less gravity. No nitrogen in atmosphere.
Thus, water vapour will be split by suns UV radiotin, the
hydrogen vanishing into space, the oxygen making the suface red colour,
what is left, vanishes somewhat slower.
On earth, almost no water vapour reaches the height of the ionosphere.
Its like a incandescent lamp: the nitrogen or argon fill gas does not
lower the vapour pressure of the tungsten filament, but it lowers
the speed of evaporation.
Georg