Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region
The Von Kármán Crater, within the South Pole-Aitken (SPA) Basin, is the landing site of China’s Chang’E-4 mission. To complement the in situ exploration mission and provide initial subsurface interpretation, we applied a 3D density inversion using the Gravity Recovery and Interior Laboratory (GRAIL)...
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ftpubmed:oai:pubmedcentral.nih.gov:6832371 2023-05-15T18:22:04+02:00 Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region Chisenga, Chikondi Yan, Jianguo Zhao, Jiannan Deng, Qingyun Barriot, Jean-Pierre 2019-10-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6832371/ http://www.ncbi.nlm.nih.gov/pubmed/31615029 https://doi.org/10.3390/s19204445 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6832371/ http://www.ncbi.nlm.nih.gov/pubmed/31615029 http://dx.doi.org/10.3390/s19204445 © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). CC-BY Article Text 2019 ftpubmed https://doi.org/10.3390/s19204445 2019-11-24T01:24:45Z The Von Kármán Crater, within the South Pole-Aitken (SPA) Basin, is the landing site of China’s Chang’E-4 mission. To complement the in situ exploration mission and provide initial subsurface interpretation, we applied a 3D density inversion using the Gravity Recovery and Interior Laboratory (GRAIL) gravity data. We constrain our inversion method using known geological and geophysical lunar parameters to reduce the non-uniqueness associated with gravity inversion. The 3D density models reveal vertical and lateral density variations, 2600–3200 kg/m(3), assigned to the changing porosity beneath the Von Kármán Crater. We also identify two mass excess anomalies in the crust with a steep density contrast of 150 kg/m(3), which were suggested to have been caused by multiple impact cratering. The anomalies from recovered near surface density models, together with the gravity derivative maps extending to the lower crust, are consistent with surface geological manifestation of excavated mantle materials from remote sensing studies. Therefore, we suggest that the density distribution of the Von Kármán Crater indicates multiple episodes of impact cratering that resulted in formation and destruction of ancient craters, with crustal reworking and excavation of mantle materials. Text South pole PubMed Central (PMC) Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) South Pole The Landing ENVELOPE(-45.689,-45.689,-60.733,-60.733) Sensors 19 20 4445 |
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Article Chisenga, Chikondi Yan, Jianguo Zhao, Jiannan Deng, Qingyun Barriot, Jean-Pierre Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
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The Von Kármán Crater, within the South Pole-Aitken (SPA) Basin, is the landing site of China’s Chang’E-4 mission. To complement the in situ exploration mission and provide initial subsurface interpretation, we applied a 3D density inversion using the Gravity Recovery and Interior Laboratory (GRAIL) gravity data. We constrain our inversion method using known geological and geophysical lunar parameters to reduce the non-uniqueness associated with gravity inversion. The 3D density models reveal vertical and lateral density variations, 2600–3200 kg/m(3), assigned to the changing porosity beneath the Von Kármán Crater. We also identify two mass excess anomalies in the crust with a steep density contrast of 150 kg/m(3), which were suggested to have been caused by multiple impact cratering. The anomalies from recovered near surface density models, together with the gravity derivative maps extending to the lower crust, are consistent with surface geological manifestation of excavated mantle materials from remote sensing studies. Therefore, we suggest that the density distribution of the Von Kármán Crater indicates multiple episodes of impact cratering that resulted in formation and destruction of ancient craters, with crustal reworking and excavation of mantle materials. |
format |
Text |
author |
Chisenga, Chikondi Yan, Jianguo Zhao, Jiannan Deng, Qingyun Barriot, Jean-Pierre |
author_facet |
Chisenga, Chikondi Yan, Jianguo Zhao, Jiannan Deng, Qingyun Barriot, Jean-Pierre |
author_sort |
Chisenga, Chikondi |
title |
Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
title_short |
Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
title_full |
Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
title_fullStr |
Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
title_full_unstemmed |
Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region |
title_sort |
density structure of the von kármán crater in the northwestern south pole-aitken basin: initial subsurface interpretation of the chang’e-4 landing site region |
publisher |
MDPI |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6832371/ http://www.ncbi.nlm.nih.gov/pubmed/31615029 https://doi.org/10.3390/s19204445 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) ENVELOPE(-45.689,-45.689,-60.733,-60.733) |
geographic |
Aitken South Pole The Landing |
geographic_facet |
Aitken South Pole The Landing |
genre |
South pole |
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South pole |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6832371/ http://www.ncbi.nlm.nih.gov/pubmed/31615029 http://dx.doi.org/10.3390/s19204445 |
op_rights |
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
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CC-BY |
op_doi |
https://doi.org/10.3390/s19204445 |
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Sensors |
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1766201419068604416 |