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1. Mass distribution of underdense meteor echoes: selection of basic data

Creator:
Šimek, Miloš
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics and underdense meteor echoes
Language:
Czech
Description:
Volume of recorded underdense meteor echoes is determined by the transmitted power, treshold sensitivity of the receiver, antenna gain including its directivity and by the range of reflecting point on the meteor trail. These parameters must be considered when the mass-distribution index s is evaluated.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Meteor physics

Creator:
Pecina, P.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics, meteoroid flights, and space research
Language:
Czech
Description:
Some comments on problems connected with our knowledge and understanding of events observable during the meteoroid flight through the atmosphere are presented. The review is divided into three parts. Tbe first part deals with the section of flight characterized by the increase of body temperature from the value reached at the heliocentric distance 1 AU, i.c. at the frontier of the Earth´s atmosphere, which was estimated to be approximatelly 280° K, to the temperature at which the evaporation of the meteoroid can start. This process is designated as pre-ablation heatlng. The second part deals with efects connected with the visible trajectory as well as with ionization trails and problems related to them. There exists generic connection between luminous flight of meteoroids and dark flight with possibility of finding the meteorites fallen to the ground namely with the predictabllity of the impact area and the impact itself. This is the subject of the third part.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. On the interaction meteor complex

Creator:
Rajchl, J.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics and Interaction Meteor Complex (IMC)
Language:
Czech
Description:
An approach to the problem of a meteoric complex called the Interaction Meteor Complex (IMG) is applied and discussed, where author^s former idea of the interaction layer (Rajchl 1969) is generalized. The role of an extended interaction of meteoroids is ephasized, both with planet surfaces and/or their satellites and with planet atmospheres, elastic or inelastic in form. The dissipation and related formative aspect are joined in one complex and compared with a topological compact. Examples of all the above mentioned types of interaction are presented. In more detail the inelastic interaction with the Earth atmosphere of whole "spectrum" from faint meteors detected by TV technique to Fireball Network bolides, is considered. First results in the form of a ψ structure and cross-complementarity are reported. The possibility of the existence of another "enlarged" ψ structure is anticipated from topological aspects and supported for the outer planets of the Solar Planetary System by results of Levin and Simonenko (1982).
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

4. Photographic data of extreme precision evaluated by exact single-body solution of meteor physics

Creator:
Bahadzhanov, P. B. and Ceplecha, Z.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics, meteoroids, and single-body motions
Language:
Czech
Description:
The exact solution of the single-body motion and ablation of a meteoroid in the atmosphere is applied to one of the most precise double-station records of a fireball photographed from Dushanbe Oct 30, 1962. The entire trajectory of 5.2 seconds duration from 77 km to 36 km of height with 268 time marks corresponds to a single value of the ablation coefficient.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6. Some new aspects in the positional reduction of the photographs taken by Fish-eye objectives

Creator:
Spurný, P.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics, photographs, and Fish-eye objectives
Language:
Czech
Description:
In this work the method used up to now tor a positional reductions of the photographs is compared with other reductional formulas. It was found that the reduction formula presently used for determination of the zenith distance is suitable, however the formula for determination of the azimuth can be replaced by a new expression, which essentially improves the total positional reduction.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7. The IAU meteor data center in Lund

Creator:
Lindblad, B. A.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
meteor physics, meteoroid orbits, and IAU Meteor Data Center
Language:
Czech
Description:
The purpose of the IAU Meteor Data Center in Lund is to archive information on meteoroid orbits. At present some 5 000 photographic double-station orbits and more than 60 000 radio determined orbits are archived. The paper describes the available data discusses some problems encountered in the archiving process.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public