eprintid: 1509 rev_number: 18 eprint_status: archive userid: 2 dir: disk0/00/00/15/09 datestamp: 2015-02-11 12:36:00 lastmod: 2017-02-08 12:21:37 status_changed: 2015-04-27 12:11:01 type: article metadata_visibility: show creators_name: Lasocki, Stanislaw creators_name: Idziak, Adam creators_id: lasocki@igf.edu.pl creators_id: corp_creators: Institute of Geophysics, Polish Academy of Sciences corp_creators: Silesian University, Faculty of Earth Sciences, Poland title: Dominant Directions of Epicenter Distribution of Regional Mining-induced Seismicity Series in Upper Silesian Coal Basin in Poland ispublished: pub subjects: MP2_3 subjects: RP2 subjects: SMU divisions: EPOS-ESI6 full_text_status: none keywords: Epicenter migration, directional patterns, induced seismicity, nonparametric estimation. abstract: The regional mining-induced seismicity of the Upper Silesian Coal Basin, Poland forms two major and two minor spatial clusters. The directional patterns of seismic series from the major clusters were studied with the use of the analysis of deflections. The seismic series is parameterized by the deflection angle of the straight line connecting epicenters of every two consecutive events, measured from NS direction. The trends of epicenter migration are characterized by modes of distribution of the deflection angle, estimated by the nonparametric kernel method. The distribution of deflection angles for the studied seismic series is not random. Altogether four trends of epicenter migration have been identified two are connected with the subseries of events that belong to the same cluster and are related to the shape of the clusters, whereas the other two, linked to the subseries of events that alternate between the clusters, indicate that mutual positions of events in such series are not random. The results support recent hypotheses pertaining to low tectonic instability of this region. date: 1998-11 date_type: published publication: Pure and Applied Geophysics volume: 153 number: 1 publisher: Springer Verlag pagerange: 21-40 id_number: doi:10.1007/s000240050183 refereed: TRUE issn: 0033-4553 official_url: http://dx.doi.org/10.1007/s000240050183 access_IS-EPOS: limited owner: Publisher citation: Lasocki, Stanislaw and Idziak, Adam (1998) Dominant Directions of Epicenter Distribution of Regional Mining-induced Seismicity Series in Upper Silesian Coal Basin in Poland. Pure and Applied Geophysics, 153 (1). pp. 21-40. DOI: https://doi.org/10.1007/s000240050183