Dependence of the height of disappearance for small meteoric bodies on their parameters

Popelenskaya, N. V.

doi:10.3103/s0027133010040047

Cited by 4 publications

(2 citation statements)

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“…As it can be seen in table 1, differences between observational and analytical values are remarkable (the standard deviation is σ = 4.11 km) and we conclude that the method proposed by Gritsevich and Popelenskaya (2008) cannot be extended to be applicable for decelerated fireballs without further modification, though it is usable to derive parameters of small meteoroids with constant velocity (Popelenskaya 2010). Figure 1 shows graphically the obtained differences between the observed and derived terminal height values based on equation ( 20).…”

Section: Resultsmentioning

confidence: 86%

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New methodology to determine the terminal height of a fireball

Moreno-Ibáñez

Gritsevich

Trigo-Rodríguez

2015

Icarus

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Despite ablation and drag processes associated with atmospheric entry of meteoroids were a subject of intensive study over the last century, little attention was devoted to interpret the observed fireball terminal height. This is a key parameter because it not only depends on the initial mass, but also on the bulk physical properties of the meteoroids and hence on their ability to ablate in the atmosphere. In this work we have developed a new approach that is tested using the fireball terminal heights observed by the Meteorite Observation and Recovery Project operated in Canada between 1970 − 1985 (hereafter referred as MORP). We then compare them to the calculation made. Our results clearly show that the new methodology is able to forecast the degree of deepening of meteoroids in the Earth's atmosphere. Then, this approach has important applications in predicting the impact hazard from cm-to metersized bodies that are represented, in part, in the MORP bolide list.

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Section: Resultsmentioning

confidence: 86%

“…For these cases observed terminal heights will be crucial in setting margins on possible α and β values based on equation (20). Some initial steps in solving this problem were taken in Popelenskaya (2010).…”

Section: Discussionmentioning

confidence: 99%