Dielectric map of the Martian northern hemisphere and the nature of plain filling materials

Details Dielectric map of the Martian northern hemisphere and the nature of plain filling materials Dielectric map of the Martian northern hemisphere and the nature of plain filling materials

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3902202m&link_type=abstract

Geophysical Research Letters, Volume 39, Issue 2, CiteID L02202

Physics

Planetary Sciences: Solid Surface Planets: Ices, Planetary Sciences: Solid Surface Planets: Origin And Evolution, Planetary Sciences: Solid Surface Planets: Polar Regions, Planetary Sciences: Solid Surface Planets: Surface Materials And Properties

Scientific paper

A number of observations suggest that an extended ocean once covered a significant part of the Martian northern hemisphere. By probing the physical properties of the subsurface to unprecedented depth, the MARSIS/Mars Express provides new geophysical evidences for the former existence of a Late Hesperian ocean. The Vastitas Borealis formation, located inside a putative shoreline of the ancient ocean, has a low dielectric constant compared with that of typical volcanic materials. We show that the measured value is only consistent with low-density sedimentary deposits, massive deposits of ground-ice, or a combination of the two. In contrast, radar observations indicate a distribution of shallow ground ice in equilibrium with the atmosphere in the south polar region. We conclude that the northern plains are filled with remnants of a late Hesperian ocean, fed by water and sediments from the outflow channels about 3 Gy ago.

Affiliated with

Also associated with

No associations

Rating

Dielectric map of the Martian northern hemisphere and the nature of plain filling materials does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dielectric map of the Martian northern hemisphere and the nature of plain filling materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dielectric map of the Martian northern hemisphere and the nature of plain filling materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-910577