Ponded deposits on asteroid 433 Eros

Details Ponded deposits on asteroid 433 Eros Ponded deposits on asteroid 433 Eros

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002m%26ps...37.1095c&link_type=abstract

Meteoritics & Planetary Science, vol. 37, no. 8, pp. 1095-1105 (2002)

Physics

19

Scientific paper

In late January 2001 the NEAR-Shoemaker spacecraft performed low-altitude passes over the surface of 433 Eros. Coordinated observations of the asteroid surface were obtained at submeter resolution by the NEAR laser rangefinder and the multispectral imager. This paper presents three independent, coordinated observations of a 90 m pond adjacent to a granular debris flow, including the highest resolution altimetric measurements of ponded deposits on Eros. The ponded deposits appear to have been emplaced by fluid-like motion of dry asteroidal regolith. A simple model of seismic agitation from impacts is developed to account for pond formation on Eros. The model predicts that ponds should form readily on Eros but not on the Moon, where ponds are not observed. The model also suggests that the absence of observable ponds in the largest craters of Eros, as well as on Phobos and Deimos, may be related to regolith depth.

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