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DOI | 10.1002/2017GL076285 |
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
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
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 |
推荐引用方式 GB/T 7714 | 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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