To the development of the mechanism of interaction of galactic comets with the terrestrial planets

31st International Conference on Equations of State for Matter

Barenbaum, A.A.^1 ; Shpekin, M.I.^2

Oil and Gas Research Institute, Russian Academy of Sciences, Gubkin Street 3, Moscow

119991, Russia^1

Kazan Federal University, Kremlyovskaya 18, Kazan, Tatarstan

420008, Russia^2

关键词: Collision mechanisms;    Hydrodynamic model;    Physical process;    Solid surface;    Terrestrial planets;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012096/pdf
DOI  :  10.1088/1742-6596/774/1/012096

来源: IOP

【 摘 要 】

We formulate an approach to the study of the physics of interaction of galactic comets with the terrestrial planets and the Moon, based on idealized hydrodynamic models of "elastic" and "inelastic" impact proposed by M A Lavrentiev. According to these models, a large crater arises on the solid surface of planet in case of "elastic" collision, whereas the narrowly focused shock wave is formed in result of "inelastic" impact. This shock wave penetrates deep into the lithosphere rocks causing their heating. Using the factual data for Earth, Mars and Moon, we came to the conclusion that the interaction of galactic comets with planets goes on with the participation of both the physical processes at once. At that, with a decrease of power of gaseous envelope of planet, the action of "inelastic" collision mechanism is reduced, "elastic" - amplified.