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Basin-forming impacts; reconnaissance modeling

B. A. Ivanov, H. J. Melosh and E. Pierazzo
Basin-forming impacts; reconnaissance modeling (in Large meteorite impacts and planetary evolution IV, Roger L. Gibson (editor) and Wolf Uwe Reimold (editor))
Special Paper - Geological Society of America (September 2010) 465: 29-49

Abstract

This paper is a current status report on a project focused on understanding the formation of large impact basins on terrestrial planetary bodies. A set of preliminary two-dimensional axisymmetric numerical models of collisions of asteroids with diameters from 150 to 800 km with the Moon, Mars, and Mercury illustrates the main mechanical effects of planetary-scale impacts. The target body is modeled on a regular grid with a spatial resolution of 5-10 km. Self-gravity is included in the hydrocode. The main consequence of such an impact is a deep melt pool at the center of the basin. Model results are tentatively compared with known impact basins such as South Pole-Aitken on the Moon and Hellas on Mars.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 465
Title: Basin-forming impacts; reconnaissance modeling
Title: Large meteorite impacts and planetary evolution IV
Author(s): Ivanov, B. A.Melosh, H. J.Pierazzo, E.
Author(s): Gibson, Roger L.editor
Author(s): Reimold, Wolf Uweeditor
Affiliation: Russian Academy of Sciences, Institute for Dynamics of Geospheres, Moscow, Russian Federation
Affiliation: University of the Witwatersrand, School of Geosciences, Johannesburg, South Africa
Pages: 29-49
Published: 201009
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 96
Accession Number: 2011-013816
Categories: Extraterrestrial geologyGeomorphology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendices
Illustration Description: illus.
Secondary Affiliation: Leibniz Institute at Humbaldt University Berlin, DEU, GermanyUniversity of Arizona, USA, United StatesPlanetary Science Institute, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201109
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