Počet záznamů: 1

Determination of P - wave arrival time of acoustic events

  1. 1.
    0352771 - GLU-S 2011 RIV SK eng J - Článek v odborném periodiku
    Svitek, T. - Rudajev, Vladimír - Petružálek, M.
    Determination of P - wave arrival time of acoustic events.
    Acta Montanistica Slovaca. Roč. 15, č. 2 (2010), s. 145-151 ISSN 1335-1788
    Grant CEP: GA AV ČR IAA300130906
    Výzkumný záměr: CEZ:AV0Z30130516
    Klíčová slova: onset detection * automatic picker * acoustic emission * loading experiments * STA/LTA
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 0.134, rok: 2010
    http://actamont.tuke.sk/pdf/2010/n2/6svitek.pdf http://actamont.tuke.sk/pdf/2010/n2/6svitek.pdf

    The new approach to the P-wave arrival time determination based on acoustic emission data from loading experiments is tested. The algorithm used in this paper is built on the STA/LTA function computed by a convolution that speeds up the computation process very much. The picking process makes use of shifting of temporary onset until certain conditions are fulfill and as a main decision criterion on the threshold exceeding of the STA/LTA derivation function is used. The P-wave onset time is determined in a selected interval that corresponds to the theoretical propagation of elastic wave in the rock sample. Results obtained by our algorithm were correlated with data acquired manually and a high order statistic software as well.
    Trvalý link: http://hdl.handle.net/11104/0192200