MOLA Digital Altimetry. NASA Image. Martian Oceans. Evidence for a Northern Ocean on Mars. Overview. Where could the water have come from? ( Origin of water on Mars) Could the Martian climate have been favorable for a liquid ocean? ( Climate conditions and obliquity simulations)
Lunine et al.  discuss:
Lunine et al. conclude that:
Collisional history of water-laden asteroids with Mars expressed as cumulative fraction of “C-type” asteroids accreted vs. time (Ma)
Probability of cometary collisions with Mars as a function of their initial semi-major axes
Abe, Y. and Abe-Ouchi, A.  discuss:
Parker et al.  discuss:
Head et al.  point out that:
Flood depth of 500 m
Flood depth of 1490m (contact 1)
Flood depth of1680 m, (mean depth of contact 1, level of contact 2 shown underneath)
 Lunine, J. et. al., The origin of water on Mars, Icarus, 165(1):1-8, 2003.
 Abe, Y. and Abe-Ouchi, A. (2003) 34th Annual Lunar and Planetary Science Conference, Abstract #1617.
 Head, J. et al., Possible ancient oceans on Mars: Evidence from Mars Orbiter Laser Altimeter Data, Science, 286:2134-2137, 1999.
 Parker, T.J. et al., (2001) 32th Annual Lunar and Planetary Science Conference, Abstract #2051.
 Parker, T.J. et al., (2002) 33th Annual Lunar and Planetary Science Conference, Abstract #2027.
 Parker, T.J. and Banerdt W.B., (1999), International Conference on Mars 5, Abstract #6114.