eprintid: 1972
rev_number: 22
eprint_status: archive
userid: 10
dir: disk0/00/00/19/72
datestamp: 2017-06-27 09:26:42
lastmod: 2018-04-12 08:17:26
status_changed: 2017-09-19 09:57:35
type: conference_item
metadata_visibility: show
creators_name: Staszek, Monika
creators_name: Orlecka-Sikora, Beata
creators_name: Kwiatek, Grzegorz
creators_id: mstaszek@igf.edu.pl
creators_id: orlecka@igf.edu.pl
creators_id: kwiatek@gfz-potsdam.de
corp_creators: Institute of Geophysics, Polish Academy of Sciences, Krakow, Poland
corp_creators: Institute of Geophysics, Polish Academy of Sciences, Krakow, Poland
corp_creators: Section 3.2: Geomechanics and Rheology, GFZ Potsdam German Research Centre for Geosciences, Potsdam, Germany
title: Static stress drop of induced earthquakes in seismic hazard assessment:
Preliminary results from The Geysers geothermal site
subjects: MP6_2
subjects: MP6_3
subjects: RU1_1
subjects: SG
divisions: SHEER-5
full_text_status: public
pres_type: speech
abstract: Static stress drop of induced earthquakes is a parameter which reflects the influence of induced seismicity on the
stress field in reservoir rock. On the other hand, events occurrence time and localization depends on the previous
stress distribution in the rock mass. Therefore, we decided to use static stress drop to assign areas of relatively
higher probability of future event occurrence with respect to entire area of seismic activity. For analyses 354-event
group of earthquakes with spectral parameters determined using spectral ratio method from NW part of The
Geysers geothermal site was used. We analyzed distributions of interpolated stress drops, determined on the basis
of events from constant moving time window using biharmonic spline interpolation method, for chosen groups
and sequences of events. Some of the distributions reveal that events tend to occur in the areas of specific ranges
of interpolated stress drop values what indicates a potential for future use of static stress drop in seismic hazard
assessment.

This work was partially supported within SHEER: "Shale Gas Exploration and Exploitation Induced Risks"
project funded from Horizon 2020 – R&I Framework Programme, call H2020-LCE-2014-1.
date: 2016-09
date_type: published
event_title: 35th General Assembly of the European Seismological Commission
event_location: Trieste, Italy
event_dates: 4-10 September 2016
event_type: conference
official_url: https://www.researchgate.net/publication/324454765_Static_stress_drop_of_induced_earthquakes_in_seismic_hazard_assessment_Preliminary_results_from_The_Geysers_geothermal_site
access_IS-EPOS: limited
owner: Publisher
citation:   Staszek, Monika and Orlecka-Sikora, Beata and Kwiatek, Grzegorz  (2016) Static stress drop of induced earthquakes in seismic hazard assessment: Preliminary results from The Geysers geothermal site.  In: 35th General Assembly of the European Seismological Commission, 4-10 September 2016, Trieste, Italy.     
document_url: https://episodesplatform.eu/eprints/1972/7/Staszek_et_al_2016_Static_stress_drop_of_induced_earthquakes_in_seismic_hazard_assessment_Presentation.pdf