| DOI: | 10.1002/2016GL070749
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| 论文题名: | Excavating Stickney crater at Phobos |
| 作者: | Bruck Syal M.; Rovny J.; Owen J.M.; Miller P.L.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8515
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| EISSN: | 1944-8246
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| 出版年: | 2016
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| 卷: | 43, 期:20 | | 起始页码: | 10595
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| 结束页码: | 10601
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| 语种: | 英语
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| 英文关键词: | impact cratering
; numerical modeling
; Phobos
; small bodies
; Stickney
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| Scopus关键词: | Numerical models
; High-resolution numerical simulation
; Impact cratering
; Initial conditions
; Large scale structures
; Low velocities
; Phobos
; Small bodies
; Stickney
; Landforms
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| 英文摘要: | Stickney crater, at 9 km across, dominates the morphology of ~22 km Phobos, the larger of the two moons of Mars. The Stickney impact event had global repercussions for Phobos, including extensive resurfacing and fracturing of the moon. Understanding the initial conditions and dynamical consequences of the collision is necessary to test competing hypotheses for the origin of peculiar grooved terrain that striates much of the surface. Previous modeling of the impact event was unable to replicate Stickney without globally fragmenting the satellite. Here we describe high-resolution numerical simulations that successfully generate Stickney crater while maintaining the large-scale structure of Phobos. Target porosity, which is estimated to be significant, aids in keeping the moon intact. Damage follows patterns centered on Stickney that are inconsistent with the observed alignment of grooved terrain on Phobos. Low-velocity boulders are ejected at shallow angles in sufficient numbers to support a rolling-boulder origin for grooved terrain. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995595734&doi=10.1002%2f2016GL070749&partnerID=40&md5=5a0ad60e33f021bafd9ac432027e728d
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9478
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Lawrence Livermore National Laboratory, Livermore, CA, United States
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| Recommended Citation: | |
Bruck Syal M.,Rovny J.,Owen J.M.,et al. Excavating Stickney crater at Phobos[J]. Geophysical Research Letters,2016-01-01,43(20).
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