10.2312/GFZ.B103-06044
Bohnhoff, Marco
Marco
Bohnhoff
https://orcid.org/0000-0001-7383-635X
Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
On the relation of stress and deformation fields to natural and induced seismicity
Deutsches GeoForschungsZentrum GFZ
2006
Thesis/Dissertation
urn:nbn:de:kobv:b103-06044
1610-0956
2006
http://creativecommons.org/licenses/by-nc-sa/3.0/de/
This work describes the results of seismological field campaigns and experiments usingcombined seismic networks of varying geometries such as a combined seismic downhole and surface network or a combined temporary local and permanent regional network. The networks were deployed in different tectonic environments, i.e. in a stable intraplate surrounding, at a plate boundary along a major transform fault zone and in forearc and backarc settings of a subduction zone to record different types of seismicity (induced earthquakes, aftershocks, subduction-related seismicity). Recording periods are typically several months. The basic ideas behind all the different experiments and studies presented here can be described as follows: In a first step, a state of the art seismic network is designed and deployed in a selected area to record local (micro)seismic activity at low magnitude detection threshold. The acquired data base is then evaluated using standard processing techniques to generate a proper hypocenter catalog for the area of investigation during the observational period. This period might be extended (at higher magnitude detection threshold) through re-evaluating and calibrating earlier hypocenter catalogs gained from records of regional permanent networks. This new catalog for the selected region then forms the base for further evaluation using different approaches one of which is the determination of fault planesolutions in order to determine the local stress field orientation and relate it to the WSM data or information on regional displacement fields determined from GPS recordings.