Record details

    A comprehensive study of distribution laws for the fragments of Košice meteorite
    Gritsevich, M.
    Kohout, Tomáš
    Peltoniemi, J.
    Tóth, J.
    Turchak, L.
    Vinnikov, V.
    Virtanen, J.
Publication type
    článek v odborném periodiku
Source title - serial
    Meteoritics & Planetary Science
    Roč. 49, č. 3
    s. 328-345
    Projekt: LH12079, GA MŠk3cav_un_auth*0281796
    Rozsah: 18 s. : P
Subject category
    H chondrite
Abstract (in english)
   In this study, we conduct a detailed analysis of the Košice meteorite fall (February28, 2010), to derive a reliable law describing the mass distribution among the recovered fragments. In total, 218 fragments of the Košice meteorite, with a total mass of 11.285 kg, were analyzed. Bimodal Weibull, bimodal Grady, and bimodal lognormal distributions are found to be the most appropriate for describing the Košice fragmentation process. Based on the assumption of bimodal lognormal, bimodal Grady, bimodal sequential, and bimodal Weibull fragmentation distributions, we suggest that, prior to further extensive fragmentation in the lower atmosphere, the Košice meteoroid was initially represented by two independent pieces with cumulative residual masses of approximately 2 and 9 kg, respectively. The smaller piece produced about 2 kg of multiple lightweight meteorite fragments with the mean around 12 g.
   The larger one resulted in 9 kg of meteorite fragments, recovered on the ground, including the two heaviest pieces of 2.374 kg and 2.167 kg with the mean around 140 g. Based on our investigations, we conclude that two to three larger fragments of 500-1000 g each should exist, but were either not recovered or not reported by illegal meteorite hunters.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    23. 10. 2014