Numerical modeling of the formation of Shackleton crater at the lunar south pole

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dc.contributor.author Harish et al.
dc.date.accessioned 2020-09-03T06:25:08Z
dc.date.available 2020-09-03T06:25:08Z
dc.date.issued 2021-01
dc.identifier.citation Harish et al., "Numerical modeling of the formation of Shackleton crater at the lunar south pole", Icarus, DOI: 10.1016/j.icarus.2020.113992, vol. 354, Jan. 2021. en_US
dc.identifier.issn 0019-1035
dc.identifier.uri https://doi.org/10.1016/j.icarus.2020.113992
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5677
dc.description.abstract The lunar south pole, on the rim of Shackleton crater, is the target for the next human landing on the Moon. We use numerical modeling to investigate the formation of that crater and the distribution of ejecta around the south pole. We find that a 1.5 km diameter asteroid with a chondrite-like composition, vertically impacting a gabbroic anorthositic target at 15 km/s, forms a crater morphologically similar to Shackleton. If the impact had a shallower 45-degree trajectory, the asteroid may have had a diameter of 1.75 km and velocity of 15 km/s or a diameter of 1.5 km and velocity of 20 km/s. Impact melt is generated during the impact, with most of the melt volume ponding on the crater floor. We introduce a water-bearing layer at various depths in the target and find that the burial depth of a volatile layer influences the final crater morphology and may explain the morphology of Shackleton.
dc.description.statementofresponsibility by Samuel H. Halim, Natasha Barrett, Sarah J. Boazman, Aleksandra J. Gawronska, Cosette M. Gilmour, Harish, Katie McCanaan, Animireddi V. Satyakumar, Jahnavi Shah and David A. Kring
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.publisher Academic Press en_US
dc.title Numerical modeling of the formation of Shackleton crater at the lunar south pole en_US
dc.type Article en_US
dc.relation.journal Icarus


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