Martian channels and valleys - Their characteristics, distribution, and age

Details Martian channels and valleys - Their characteristics, distribution, and age Martian channels and valleys - Their characteristics, distribution, and age

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...48...91c&link_type=abstract

Icarus, vol. 48, Oct. 1981, p. 91-117. NASA-supported research.

Other

143

Canals, Mars Photographs, Mars Surface, Planetary Geology, Planetary Mapping, Spatial Distribution, Valleys, Albedo, Mars Craters, Spaceborne Photography, Topography, Viking Orbiter Spacecraft, Water, Mars, Channels, Valleys, Characteristics, Distribution, Age, Mapping, Terrain, Formation, Photographs, Position (Location), Maps, Drainage, Frets, Craters, Density, Elevation, Albedo, Origin, Patterns, Flow

Scientific paper

The distribution and ages of Martian channels and valleys, which are generally believed to have been cut by running water, are examined with particular emphasis on the small branching networks referred to as runoff channels or valley networks. Valleys at latitudes from 65 deg S to 65 deg N were surveyed on Viking images at resolutions between 125 and 300 m. Almost all of the valleys are found in the old cratered terrain, in areas characterized by high elevations, low albedos and low violet/red ratios. The networks are deduced to have formed early in the history of the planet, with a formation rate declining rapidly shortly after the decline of the cratering rate 3.9 billion years ago. Two types of outflow channels are distinguished: unconfined, in which broad swaths of terrain are scoured, and confined, in which flow is restricted to discrete channels. Both types start at local sources, and have formed episodically throughout Martian history. Fretted channels, found mainly in two latitude belts characterized by relatively rapid erosion along escarpments, are explained by the lateral enlargement of other channels by mass wasting.

Affiliated with

Also associated with

No associations

Rating

Martian channels and valleys - Their characteristics, distribution, and age 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 Martian channels and valleys - Their characteristics, distribution, and age, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Martian channels and valleys - Their characteristics, distribution, and age will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1469411