Catastrophic disruption of icy bodies with sub-surface oceans
Catastrophic disruption of icy bodies with sub-surface oceans
复制标题
地下海洋对冰体的灾难性破坏
DOI:
10.1016/j.icarus.2019.113457
复制
发表时间:
2020
期刊:
影响因子:
3.2
通讯作者:
Burchell M
中科院分区:
文献类型:
--
作者:
Burchell M
Several icy bodies in the outer Solar system have extensive internal oceans. In several bodies the oceans are believed to be so extensive they decouple the interior core from the icy surface. A major evolutionary driver in the Solar System is high speed impacts – which lead to cratering or even disruption of the target body. Here we consider how the presence of an internal ocean modifies the energy density needed to disrupt an icy body with an internal ocean. We find that in laboratory experiments on decimetre scale bodies, the energy density to cause disruption is 16.25 ± 1.35 J kg−1, compared to 18.0 ± 0.7 J kg−1for solid ice bodies. This suggests that for the purposes of impacts the bodies behave as if a solid with the same density. Predictions of the lifetimes of such icy bodies against impact disruption thus need not take the interior ocean into account.
登录
查看更多内容
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
K. Zahnle
通讯作者:
K. Zahnle
影响因子:
3.2
作者:
P. Thomas;J. Burns;P. Helfenstein;S. Squyres;J. Veverka;C. Porco;E. Turtle;A. McEwen;T. Denk;B. Giese;T. Roatsch;T. Johnson;R. Jacobson
通讯作者:
P. Thomas;J. Burns;P. Helfenstein;S. Squyres;J. Veverka;C. Porco;E. Turtle;A. McEwen;T. Denk;B. Giese;T. Roatsch;T. Johnson;R. Jacobson
影响因子:
2
作者:
D. Gault;C. Sonett
通讯作者:
C. Sonett
DOI:
10.3847/0004-637x/829/2/121
发表时间:
2016
期刊:
The Astrophysical Journal
影响因子:
--
作者:
W. Sparks;K. Hand;M. McGrath;E. Bergeron;M. Cracraft;S. Deustua
通讯作者:
S. Deustua
影响因子:
5.2
作者:
N. Hammond;A. Barr;E. Parmentier
通讯作者:
E. Parmentier