Parameters of graphite shock compression at the initial stages of Popigai astrobleme formation

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Abstract

A numerical modeling of the process of a high-speed impact of a massive asteroid with the Earth’s surface was carried out to study the hypothesis of the meteoritic origin of the impact diamond deposit located in the Popigai River basin. A normal collision of a chondritic asteroid with a layered structure of the Earth’s soil at a speed of 25 km/s is simulated in 2D axisymmetric formulation. The natural carbon deposit layer is located in the near-surface zone of the loaded area. The calculations were carried out using a multidimensional parallel implementation of the finite-size particle-in-cell method. Models of the equations of state of chondrite, quartz and carbon are used to describe the properties of the meteorite and soil material. Thermodynamic parameters of impact compression of soil materials at the initial stages of loading and crater formation processes are obtained.

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About the authors

V. V. Kim

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

S. I. Martynenko

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

A. V. Ostrik

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

K. V. Khishchenko

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru
Russian Federation, Chernogolovka, Moscow Region

I. V. Lomonosov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences

Email: kim@ficp.ac.ru

Corresponding Member of the RAS

Russian Federation, Chernogolovka, Moscow Region

References

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  2. Масайтис В.Л. Там, где алмазы. СПб.: Изд-во ВСЕГЕИ, 2016. 384 с. ISBN 978-5-93761-241-0
  3. Hazards due to comets and asteroids. Ed. T. Gehrels. Univ. of Arizona Press. 1996. 1300 p.
  4. Fortov V.E., Kim V.V., Lomonosov I.V., Matveichev A.V., Ostrik A.V. Numerical modeling of hypervelocity impacts // Int. J. Impact Eng. 2006. V. 33 (1–12). P. 244.

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2. Fig. 1. Statement of the problem.

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3. Fig. 2. Calculation results. Density distribution field at the time of 10 s.

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