Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars

Details Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jgre..10908001m&link_type=abstract

Journal of Geophysical Research, Volume 109, Issue E8, CiteID E08001

Physics

25

Planetology: Solar System Objects: Mars, Hydrology: Frozen Ground, Hydrology: Geomorphology (1625), Planetology: Solid Surface Planets: Surface Materials And Properties, Planetology: Solid Surface Planets: Polar Regions

Scientific paper

Patterned grounds, like polygonal features, are the signature of climatic effects in periglacial regions on Earth. Identifying similar features on Mars is important for an understanding of the past Martian climate. In this study we mapped fresh patterned landforms from the systematic analysis of Mars Orbiter Camera high-resolution images. We show that most of them are distributed at latitudes poleward of +/-55°, making a climatic control likely. This distribution correlates to the distribution of ground ice detected by the Neutron Spectrometer aboard Mars Odyssey. This correlation is likely the consequence of the Neutron Spectrometer detecting ice no deeper than about 1 m. Patterned ground formation requires ice in this range of depth because these features are triggered by the propagation of a thermal wave that is driven by seasonal or diurnal changes in insolation, which affect the temperature in the uppermost ground layers. Sublimation seems to play a role in the shaping of many of the small patterns observed at latitudes between 55° and 70°. No widespread polygonal features are correlated to the equatorial regions where hydrogen is detected by the Neutron Spectrometer.

Affiliated with

Also associated with

No associations

Rating

Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars 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 Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1088630