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

✍ Scribed by N.R.G. Shrine; M.J. Burchell; I.D.S. Grey

Book ID
102571664
Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
247 KB
Volume
155
Category
Article
ISSN
0019-1035

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✦ Synopsis

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 powerlaw 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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