eprintid: 1449
rev_number: 18
eprint_status: archive
userid: 2
dir: disk0/00/00/14/49
datestamp: 2015-02-19 07:42:19
lastmod: 2017-02-08 12:21:39
status_changed: 2015-04-27 12:10:55
type: article
metadata_visibility: show
creators_name: Olszewska, Dorota
creators_name: Lasocki, Stanislaw
creators_id: dolszewska@seismo.geol.agh.edu.pl
creators_id: lasocki@igf.edu.pl
corp_creators: AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Krakow, Poland
title: Application of the horizontal to vertical spectral ratio technique for estimating the site characteristics of ground motion caused by mining induced events
ispublished: pub
subjects: RP3
subjects: SMU
subjects: SS
divisions: EPOS-ESI3
full_text_status: none
keywords: site effects   site amplification   spectral ratio   HVSR method   induced seismicity
abstract: The work presents an attempt of application of the horizontal-to-vertical spectral ratio (HVSR) method for estimating the local amplification of ground motion caused by mining seismic events in the Legnica Głogów Copper District. Amplifying properties of the surface layer are assessed from the ratio of amplitude spectra of the horizontal and vertical components of ground acceleration, recorded at the surface. The location of a local maximum of the ratio in the frequency band up to 8 Hz assigns the resonant frequency of the surface layer; the maximal value estimates the amplification factor at the measurement point. The spectral ratio was evaluated for 219 ground acceleration records from ten recording stations. The HVSR curves for induced seismicity turned out to be similar to the typical HVSR-s for natural earthquakes. Amplification factors estimated by the HVSR method were used to reduce the observed peak ground accelerations (PGA-s) to the bedrock. The reduction significantly improved an agreement beween the PGA values order and the order of epicentral distances. The obtained results suggest that the HVSR method can be successfully used to evaluate the local influence of the surface layer also for induced seismicity, in spite of the fact that in this case the conditions for application of the method essentially differ from the conditions met in natural seismicity.
date: 2004
date_type: published
publication: Acta Geophysica
volume: 52
number: 3
publisher: Versita, Warsaw and Springer-Verlag Berlin Heidelberg
pagerange: 301-318
refereed: TRUE
issn: 1895-6572
access_IS-EPOS: limited
owner: Publisher
citation:   Olszewska, Dorota and Lasocki, Stanislaw  (2004) Application of the horizontal to vertical spectral ratio technique for estimating the site characteristics of ground motion caused by mining induced events.  Acta Geophysica, 52 (3).  pp. 301-318.