The role of thermal motions of particles of ablated meteoric material for fireballs

Title:

The role of thermal motions of particles of ablated meteoric material for fireballs

Creator:

Padevět, V.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:9b12984d-bbd0-4c51-89a3-47ebbdeb12e9
uuid:9b12984d-bbd0-4c51-89a3-47ebbdeb12e9

Subject:

fireballs, air particles, and thermal motions

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In a previous paper (Padevet, 1984), the author pointed out the decisive role of thermal motions of air particles in the continuous medium behind a shock wave for fireballs. Nevertheless, the change in quality of the mechanism of momentum and energy transfer had practically no effect on the values of the transferred quantities. It was found that the role of thernal motions of particles of meteoric material becomes distinctly manifest only if the interaction of the atmosphee with the ablated meteoric material is considered. This may explain some of the observed phenomena, e.g. the "mass paradox", or the photographed fragmentation of fireballs. It also appears probable that all four groups of fireballs, I, II, IIIA, IIIB, determined earlier, can be assigned to known types of meteorites, in particular to chondrites of four known types, viz H, L, CM and CI. However, the theory of fireballs in a continuous medium should be further developed in several directions, as pointed out by the author in the discussion.

Language:

Czech

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

51-87

Source:

Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 1985 Volume:59-62 | Number:59

Harvested from:

CDK

Metadata only:

false