Active Geophysical Monitoring

CHAPTER 20

AUTOMATIC TRAVEL TIME DETERMINATIONFROM A FREQUENCY-DOMAIN TRANSFERFUNCTION: THE SOMPI EVENT ANALYSIS

Yoko Hasada^a,b, Mineo Kumazawa^b,c, Kayoko Tsuruga^b,d,Takahiro Kunitomo^b,c, and Junzo Kasahara^b,c

Contents

1. Introduction

2. Theory

2.1. Concept of the model

2.2. Model of pulse sequence

2.3. Modeling dispersive waves

2.4. Modeling observed data

2.5. Determination of the complex travel times

2.6. Determination of the complex amplitudes

2.7. Maximum likelihood approach using linearized model

2.8. Determination of the model order

2.9. Error estimation by bootstrap method

3. Numerical Experiment

4. Discussion and Conclusion

References

1. INTRODUCTION

ACROSS (Accurately-Controlled Routinely-Operated Signal System) is a subsurface exploring/monitoring ...