Record details

Title
    Reply to Boslough et al.: Decades of comet research counter their claims
Author
    Bunch, T. E.
    Howard, G. A.
    Kennett, J. P.
    Kletetschka, Günther
    Napier, W. M.
    Tankersley, K. B.
    West, A.
    Wittke, J. H.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Proceedings of the National Academy of Sciences of the United States of America
Vol./nr.
    Roč. 110, č. 45
Year
    2013
Notes
    Rozsah: 1 s. : E
Subject category
    comet
    impact hazard
    Oort cloud
Keyword
    Al
    Boslough
    Claims
    Comet
    Counter
    Decades
    Reply
    Research
Abstract (in english)
   Most Earth-crossing comets arrive from the Oort cloud and the transneptunian region by way of the centaur population, an unstable reservoir orbiting between the giant planets that feeds the Jupiter family and Earth-crossing populations. Current impact hazard assessments predict one such impact with recurrence time in excess of 50,000 y, but these assessments are based on the erroneous assumption of a steadystate comet population. The occasional injection of giant, short-period comets negates this assumption over timescales relevant to civilization.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    23. 10. 2014