Determination of earthquake focal mechanism

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Table of contents

1􀀃 Introduction
1.1􀀃 Context
1.2􀀃 Aim of the Ph. D.
1.3􀀃 Plan of the manuscript
FIRST PART
2􀀃 Theory
2.1􀀃 Inverse Problem
2.2􀀃 Earthquake location
2.3􀀃 Determination of earthquake focal mechanism
2.4􀀃 Seismic waveforms modelling
3􀀃 Geological settings: the Upper Rhine Graben (URG)
3.1􀀃 Brief history of the URG
3.2􀀃 Temperature anomalies in the URG
3.3􀀃 Geothermal sites in the URG
SECOND PART
4􀀃 The combination of surface and down-hole seismic networks for earthquake location at the Soultz-sous-Forêts geothermal site (France)
Abstract
4.1􀀃 Introduction
4.2􀀃 Methodology
4.3􀀃 The Soultz-sous-Forêts geothermal site
4.4􀀃 Results and discussion
4.5􀀃 Conclusion and outlooks
Acknowledgment
References
5􀀃 Modelling earthquake location errors at a reservoir scale: a case study in the Upper Rhine Graben
Abstract
5.1􀀃 Introduction
5.2􀀃 Methodology
5.3􀀃 Case study: Rittershoffen geothermal field
5.4􀀃 Results and discussions
5.5􀀃 Conclusions and outlook
Acknowledgments
References
THIRD PART
6􀀃 Modelling focal mechanism errors of seismicity induced at Rittershoffen geothermal field (Alsace, France)
Abstract
6.1􀀃 Introduction
6.2􀀃 Methodology
6.3􀀃 The Rittershoffen geothermal site
6.4􀀃 Results and Discussion
6.5􀀃 Conclusion
References
Acknowledgment
FOURTH PART
7􀀃 Discussion, conclusion
7.1􀀃 Gaussian distribution of the hypocentre PDF
7.2􀀃 Impact of a calibration shot on earthquake location
7.3􀀃 Impact of the seismic coverage on focal mechanisms
7.4􀀃 Impact of the use of amplitude ratios S/P on focal mechanisms
7.5􀀃 Main discussion and conclusion
8􀀃 Outlooks
9􀀃 References
10􀀃 Modelling seismic event location errors at the reservoir scale: application to the geothermal site of Soultz-sous-Forêts (Alsace, France)
Abstract
10.1􀀃 Introduction
10.2􀀃 Methodology
10.3􀀃 The Soultz-sous-Forêts geothermal site
10.4􀀃 Results and discussion
10.5􀀃 Conclusion and outlooks
Acknowledgment
References