Rock Anisotropy, Fracture and Earthquake Assessment

Yonggang Li, University of Southern California, Los Angeles, USA

• Table of content:Chapter 1 Seismic Wave Propagation in Anisotropic Rocks with Applications to Defining Fractures in Earth Crust1.1 Introduction 1.2 Elastic Anisotropy of Crustal Rocks1.3 Plane Wave Propagation in Homogeneous Anisotropic Medium 1.4 Reflection and Refraction of Plane Waves at a Planar Boundary between Anisotropic Media 1.5 Ray Tracing in Anisotropic Heterogeneous Media 1.6 Ray Series Modeling of Seismic Wave Propagation in 3-D Heterogamous Anisotropic Media 1.7 Observation and Modeling of Fault-Zone Fracture Seismic Anisotropy1.8 Shear Wave Splitting Observations and Implications on Stress Regimes in the Los Angeles Basin, California AcknowledgementReferencesChapter 2 Reproducing the Realistic Compressive-tensile Strength Ratio of Rocks using Discrete Element Model 2.1 Introduction 2.2 A Brief Introduction to the ESyS-Particle 2.3 The New Criterion for Bond Breakage2.4 Calibration procedures2.5 Parametric Studies2.6 Discussions and Conclusions AcknowledgementReferencesChapter 3 Rock Fracture under Static and Dynamic Stress3.1 Introduction3.2 Stress Intensity Factor And Stress Field The Sichuan-Yunan Region3.3 Coulombchuan-Yunan Regionnd St3.4 Energy Release and J-integral 3.5 Crack Growth 3.6 Crack Growth under Dynamic Loading 3.7 Cohesive Model in Rock Fracture 3.8 Numeric Method for Fracture Mechanics 3.9 DiscussionAcknowledgement ReferencesChapter 4 Multiple Linear Regression Analyses on the Relationships among Magnitude, Rupture Length, Rupture Width, Rupture Area, and Surface Displacement4.1 Introduction4.2 Data4.3 Linear Models and Computational Approach4.4 Results4.5 Consluding Remarks AcknowledgmentsReferencesChapter 5 PI Algorithm Applied to the Sichuan-Yunnan Region: A Statistical Physics Method for Intermediate-term Medium-range Earthquake Forecast in Continental China5.1 The PI Algorithm5.2 The Sichuan-Yunan Region5.3 PI Algorithm Applied to the Sichuan-Yunnan Region5.4 Discussion and Development of the PI Application5.5 Concluding Remark Acknowledgement ReferencesChapter 6 Probabilistic Seismic Hazard Assessment for Pacific Island Countries 6.1 Introduction 6.2 Data6.3 Kinematic Modeling Based on GPS and Active Faults6.4 Modeling the Regional Seismicity 6.5 Probabilistic Seismic Hazard Maps6.6 DiscussionAcknowledgmentsReferences