Imperial College London
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Professor Gareth Collins

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Planetary Science
 
 
 
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Contact

 

+44 (0)20 7594 1518g.collins Website

 
 
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Location

 

4.83Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Potter:2015:10.1130/2015.2518(06),
author = {Potter, RWK and Kring, DA and Collins, GS},
doi = {10.1130/2015.2518(06)},
journal = {Geological Society of America Special Papers},
pages = {99--113},
title = {Scaling of basin-sized impacts and the influence of target temperature},
url = {http://dx.doi.org/10.1130/2015.2518(06)},
volume = {518},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We produce a set of scaling laws for basin-sized impacts using data from a suiteof lunar basin numerical models. The results demonstrate the importance of preimpacttarget temperature and thermal gradient, which are shown to greatly infl uencethe modifi cation phase of the impact cratering process. Impacts into targets withcontrasting thermal properties also produce very different crustal and topographicprofi les for impacts of the same energy. Thermal conditions do not, however, signifi -cantly infl uence the excavation stage of the cratering process; results demonstrate,as a consequence of gravity-dominated growth, that transient crater radii are generallywithin 5% of each other over a wide range of thermal gradients. Excavationdepth-to-diameter ratios for the basin models (~0.12) agree well with experimental,geological, and geophysical estimates, suggesting basins follow proportional scaling.This is further demonstrated by an agreement between the basin models andPi- scaling laws based upon fi rst principles and experimental data. The results of thiswork should also be applicable to basin-scale impacts on other silicate bodies, includingthe Hadean Earth.
AU  - Potter,RWK
AU  - Kring,DA
AU  - Collins,GS
DO  - 10.1130/2015.2518(06)
EP  - 113
PY  - 2015///
SN  - 0072-1077
SP  - 99
TI  - Scaling of basin-sized impacts and the influence of target temperature
T2  - Geological Society of America Special Papers
UR  - http://dx.doi.org/10.1130/2015.2518(06)
VL  - 518
ER  -
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