Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement

Details Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p33b1443g&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #P33B-1443

Physics

5420 Impact Phenomena, Cratering (6022, 8136), 5460 Physical Properties Of Materials, 6225 Mars

Scientific paper

A number of Martian craters ranging from 5.5 to 220 km in diameter show concentric haloes of low-thermal inertia material that we interpret as analogous to previously-described haloes of highly comminuted impact ejecta on the Moon. Interpretation of the Martian haloes as fine-grained ejecta is supported both by their morphology and spatial distribution, and by their scaling relative to their source craters. The Martian crater halo sizes show a power law relationship relative to the source craters, consistent with scaling relationships recently derived for ~250 lunar craters. Both the Martian and lunar empirically-derived power laws are broadly consistent with theoretical predictions for ballistically emplaced ejecta. This suggests that deposition of particles comprising the Martian low-thermal inertia haloes - on the order of 100 microns to 10mm in size - is not profoundly affected by the Martian atmosphere. Thus, our results place constraints on the mechanics of Martian ejecta emplacement, and on the role of the atmosphere and regolith volatiles in mediating ejecta blanket morphology.

Affiliated with

Also associated with

No associations

Rating

Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement 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 Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly Comminuted Impact Ejecta on Mars: Constraints on Ballistic Emplacement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1237818