Počet záznamů: 1

Candidates for multiple impact craters?: Popigai and Chicxulub as seen by the global high resolution gravitational field model EGM2008

  1. 1.
    0355907 - ASU-R 2011 RIV DE eng J - Článek v odborném periodiku
    Klokočník, Jaroslav - Kostelecký, J. - Pešek, I. - Novák, P. - Wagner, C. A. - Sebera, Josef
    Candidates for multiple impact craters?: Popigai and Chicxulub as seen by the global high resolution gravitational field model EGM2008.
    Solid Earth. Roč. 1, č. 1 (2010), s. 71-83 ISSN 1869-9510
    Grant ostatní: ESA(XE) ESA-PECS project no. 98056
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: impact craters * gravity field model EGM2008 * second radial derivatives
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

    The Earth gravity filed model EGM 2008 is complete till degree and order 2160 and provides resolution of geoid and derivated quantities 5x5 arcmin (about 9 km half wavelenght on the equator). With this model and using gravity anomalies and second radial derivatives of the disturbing geopotential we tested all impact meteoritic craters known on the Earth with diamater larger than about 30 km. In the case of Chicxulub (Yucatan) and Popigai (Siberia) we suggested that these craters may not be single but double. It is in a detail discussed in this paper.
    Trvalý link: http://hdl.handle.net/11104/0194572