Velocity Scaling of Impact Craters in Water Ice over the Range 1 to 7.3 km s-1

Details Velocity Scaling of Impact Craters in Water Ice over the Range 1 to 7.3 km s-1 Velocity Scaling of Impact Craters in Water Ice over the Range 1 to 7.3 km s-1

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002icar..155..475s&link_type=abstract

Icarus, Volume 155, Issue 2, pp. 475-485 (2002).

Physics

11

Scientific paper

The impact cratering behavior of polycrystalline ice at a temperature of 259+/-3 K has been investigated by 16 impacts with 1-mm aluminum 2017 alloy spheres (density 2790 kg m-3) over the velocity range 1 to 7.3 km s-1 using a two-stage light-gas gun. Crater cross-sectional profiles and diameter, depth, and volume data are presented. It is found that there is no significant difference in power-law energy exponents for scaling of crater diameter and volume between these data and previous low-velocity (<1 km s-1) ice impact data. Dimensionless pi group scaling was also found to scale the data in a way which can be readily combined with earlier lower velocity data and data at a lower ice temperature. .

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