GSTDTAP  > 气候变化
DOI10.1002/2017GL076285
Effects of Friction and Plastic Deformation in Shock-Comminuted Damaged Rocks on Impact Heating
Kurosawa, Kosuke1; Genda, Hidenori2
2018-01-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:2页码:620-626
文章类型Article
语种英语
国家Japan
英文摘要

Hypervelocity impacts cause significant heating of planetary bodies. Such events are recorded by a reset of Ar-40-Ar-36 ages and/or impact melts. Here we investigate the influence of friction and plastic deformation in shock-generated comminuted rocks on the degree of impact heating using the iSALE shock-physics code. We demonstrate that conversion from kinetic to internal energy in the targets with strength occurs during pressure release, and additional heating becomes significant for low-velocity impacts (<10 km s(-1)). This additional heat reduces the impact-velocity thresholds required to heat the targets with the 0.1 projectile mass to temperatures for the onset of Ar loss and melting from 8 and 10 km s(-1), respectively, for strengthless rocks to 2 and 6 km s(-1) for typical rocks. Our results suggest that the impact conditions required to produce the unique features caused by impact heating span a much wider range than previously thought.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000425514300016
WOS关键词MELT PRODUCTION ; HEAVY BOMBARDMENT ; OBLIQUE IMPACTS ; STRENGTH ; ORIGIN ; SIMULATIONS ; PROJECTILES ; METEORITES
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/26361
专题气候变化
作者单位1.Chiba Inst Technol, Planetary Explorat Res Ctr, Narashino, Chiba, Japan;
2.Tokyo Inst Technol, Earth Life Sci Inst, Meguro Ku, Tokyo, Japan
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Kurosawa, Kosuke,Genda, Hidenori. Effects of Friction and Plastic Deformation in Shock-Comminuted Damaged Rocks on Impact Heating[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):620-626.
APA Kurosawa, Kosuke,&Genda, Hidenori.(2018).Effects of Friction and Plastic Deformation in Shock-Comminuted Damaged Rocks on Impact Heating.GEOPHYSICAL RESEARCH LETTERS,45(2),620-626.
MLA Kurosawa, Kosuke,et al."Effects of Friction and Plastic Deformation in Shock-Comminuted Damaged Rocks on Impact Heating".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):620-626.
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