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Determination of P - wave arrival time of acoustic events
- 1.0352771 - GLÚ 2011 RIV SK eng J - Journal Article
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
R&D Projects: GA AV ČR IAA300130906
Institutional research plan: CEZ:AV0Z30130516
Keywords : onset detection * automatic picker * acoustic emission * loading experiments * STA/LTA
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 0.134, year: 2010
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.
Permanent Link: http://hdl.handle.net/11104/0192200
Number of the records: 1