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Determination of P - wave arrival time of acoustic events
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SYSNO ASEP 0352771 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Determination of P - wave arrival time of acoustic events Author(s) Svitek, T. (CZ) RID
Rudajev, Vladimír (GLU-S) RID, SAI
Petružálek, M. (CZ)Source Title Acta Montanistica Slovaca. - : Technická univerzita v Košiciach - ISSN 1335-1788
Roč. 15, č. 2 (2010), s. 145-151Number of pages 7 s. Publication form WWW - WWW Language eng - English Country SK - Slovakia Keywords onset detection ; automatic picker ; acoustic emission ; loading experiments ; STA/LTA Subject RIV DB - Geology ; Mineralogy R&D Projects IAA300130906 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000283443400006 EID SCOPUS 78449289639 Annotation 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. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2011
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