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Table of contents
Chapter 1 GENERAL INTRODUCTION
1.1 Background
1.2 Previous studies
1.2.1 Structural geology
1.2.2 Seismic studies
1.2.3 Other geophyisical methods
1.2.3.1 Deformation
1.2.3.2 Geoelectric Measurements
1.2.3.3 Gravimetry
1.3 Merapi seismic network
1.3.1 Historical review
1.3.2 Recent seismic network
1.3.3 Instrumental problems
1.4 Main features of Merapi seismic events
1.5 Thesis Structure
Chapter 2 SEISMIC CHRONOLOGY ASSOCIATED WITH THE ERUPTION
2.1 Introduction
2.1 Data and method
2.3 Seismic chronology during 2010 crisis
2.4 Discussion
2.5 Conclusion
Chapter 3 SOURCE LOCATIONS
3.1 Introduction
3.2 Data and method
3.2.1 Absolute and uncertainty estimation
3.2.2 Relative location using double difference method
3.3 Results
3.3.1 Absolute locations
3.3.2 Relative locations
3.3.3 Depths versus arrival time difference models
3.3.4 Temporal evolution of the hypocenter distribution
3.4 Discussion
3.4.1 Aseismic zone in Merapi eddifice
3.4.2 Magma migration
3.5 Conclusions and perspective
Chapter 4 RSAM AND ERUPTION FORECASTING
4.1 Introduction
4.2 Data and method
4.2.1 RSAM and modified RSAM (MRSAM)
4.2.2 Hindsight eruption forecasting
4.3 Results
4.3.1 RSAM and MRSAM
4.3.2 Eruption forecasting
4.4 Discussion
4.5 Conclusions
Chapter 5 FAMILIES ANALYSIS
5.1 Introduction
5.2 Data and method
5.2.1 Recursive event detections
5.2.2 Extraction of families
5.3 Results and discussions
5.3.1 Event detections
5.3.2 Families of events
5.4 Conclusions and perspectives
Chapter 6 VELOCITY VARIATIONS BASED ON CODA WAVE INTERFEROMETRY
6.1 Introduction
6.2 Data and method
6.2.1 Velocity variations in the coda of multiplets
6.2.1.1 Multiplets data
6.2.1.2 Doublet method
6.2.1.3 Stretching method
6.2.2 Velovity variations using noise correlation
6.2.2.1 Noise data
6.2.2.2 Data selection and time synchronization
6.2.2.3 Corrections of rain effects
6.2.2.1 2D location of velocity perturbations
6.3 Results
6.3.1 Velocity variations obtained from multiplets
6.3.2 Velovity variations obtained from noise correlation
6.4 Discussions
6.4.1 Comparison of the methods used
6.4.2 Velocity changes prior to the eruption
6.4.3 Comparison with earlier studies at Merapi
6.4.4 AVV and tectonic events
6.5 Conclusions and perspectives
Chapter 7 GENERAL CONCLUSSIONS
APPENDIX A
APPENDIX B
APPENDIX C
APPENDIX D
REFERENCES
