Active Geophysical Monitoring

CHAPTER 22

SINGULAR VALUE DECOMPOSITION IN ACTIVE MONITORING DATA ANALYSIS

Liao Chengwang^a

Contents

1. Introduction

2. SVD

3. Algorithm

4. Numerical Test

5. Field Test

6. Location of Source and Sites

7. Experiment and Data Process

8. Discussion

References

1. INTRODUCTION

The Accurately Controlled Routinely Operated Signal System (ACROSS) intends to monitor very small changes of physical states in the focal region of coming great earthquakes to be predicted through transmitting accurately controlled seismic waves (Kumazawa et al., 2000). What ACROSS observed is a precise transfer function in the frequency domain between the source and the receiver. In a limit band of frequency, the transfer function is modeled as superimposed exponentially damped ...