| Preface |
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xiii | |
| Acknowledgments |
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xvii | |
| List of Abbreviations |
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xix | |
| List of Mathematical Symbols |
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xxi | |
| Part I Models |
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1 | (30) |
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1 Motivation: Earthquake science challenges |
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3 | (3) |
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2 Seismological background |
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6 | (15) |
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6 | (2) |
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8 | (3) |
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2.3 Description of modern earthquake catalogs |
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11 | (3) |
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2.4 Earthquake temporal occurrence: quasi-periodic, Poisson, or clustered? |
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14 | (2) |
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2.5 Earthquake faults: one fault, several faults, or an infinite number of faults? |
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16 | (2) |
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2.6 Statistical and physical models of seismicity |
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18 | (1) |
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2.7 Laboratory and theoretical studies of fracture |
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19 | (2) |
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3 Stochastic processes and earthquake occurrence models |
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21 | (10) |
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3.1 Earthquake clustering and branching processes |
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21 | (3) |
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3.2 Several problems and challenges |
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24 | (2) |
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3.3 Critical continuum-state branching model of earthquake rupture |
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26 | (7) |
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3.3.1 Time-magnitude simulation |
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26 | (2) |
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3.3.2 Space-focal mechanism simulation |
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28 | (3) |
| Part II Statistics |
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31 | (152) |
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4 Statistical distributions of earthquake numbers: Consequence of branching process |
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33 | (21) |
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4.1 Theoretical considerations |
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34 | (9) |
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4.1.1 Generating function for the negative binomial distribution (NBD) |
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34 | (5) |
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4.1.2 NBD distribution expressions |
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39 | (2) |
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4.1.3 Statistical parameter estimation |
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41 | (2) |
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4.2 Observed earthquake numbers distribution |
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43 | (11) |
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4.2.1 Statistical analysis of earthquake catalogs |
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43 | (1) |
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4.2.2 Observed earthquake numbers distributions |
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43 | (3) |
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4.2.3 Likelihood analysis |
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46 | (3) |
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4.2.4 Tables of parameters |
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49 | (5) |
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5 Earthquake size distribution |
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54 | (42) |
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5.1 Magnitude versus seismic moment |
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54 | (2) |
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5.2 Seismic moment distribution |
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56 | (4) |
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5.3 Is β identical to 1/2 |
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60 | (20) |
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60 | (2) |
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5.3.2 Catalog analysis and earthquake size distribution |
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62 | (1) |
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5.3.3 Systematic and random effects in determining earthquake size |
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63 | (14) |
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5.3.4 Dislocation avalanche statistics |
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77 | (2) |
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5.3.5 What are β identical to 1/2 consequences? |
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79 | (1) |
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5.4 Seismic moment sum distribution |
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80 | (6) |
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5.4.1 Simulation and analytical results |
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80 | (3) |
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5.4.2 Applications to seismicity analysis |
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83 | (3) |
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5.5 Length of aftershock zone (earthquake spatial scaling) |
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86 | (4) |
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5.6 Maximum or corner magnitude: 2004 Sumatra and 2011 Tohoku mega-earthquakes |
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90 | (6) |
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5.6.1 Maximum moment for subduction zones |
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90 | (1) |
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5.6.2 Seismic moment conservation principle |
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90 | (6) |
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6 Temporal earthquake distribution |
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96 | (29) |
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96 | (1) |
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6.2 Seismic moment release in earthquakes and aftershocks |
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97 | (10) |
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6.2.1 Temporal distribution of aftershocks |
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97 | (2) |
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6.2.2 Southern California earthquakes and their aftershocks |
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99 | (4) |
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6.2.3 Global shallow earthquakes |
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103 | (2) |
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6.2.4 Comparison of source-time functions and aftershock moment release |
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105 | (2) |
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6.3 Random shear stress and Omori's law |
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107 | (3) |
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6.4 Aftershock temporal distribution, theoretical analysis |
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110 | (6) |
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110 | (2) |
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6.4.2 Inverse Gaussian distribution (IGD) |
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112 | (4) |
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6.5 Temporal distribution of aftershocks: Observations |
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116 | (5) |
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6.5.1 Aftershock sequences |
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116 | (1) |
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6.5.2 Temporal distribution for earthquake pairs |
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116 | (5) |
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6.6 Example: The New Madrid earthquake sequence of 1811-12 |
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121 | (2) |
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123 | (2) |
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7 Earthquake location distribution |
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125 | (21) |
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7.1 Multipoint spatial statistical moments |
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125 | (2) |
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7.2 Sources of error and bias in estimating the correlation dimension |
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127 | (14) |
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7.2.1 The number of earthquakes in a sample |
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128 | (1) |
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7.2.2 Earthquake location error |
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128 | (4) |
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7.2.3 Projection effect for epicentral scaling dimension |
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132 | (2) |
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134 | (2) |
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7.2.5 Inhomogeneity of earthquake depth distribution |
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136 | (2) |
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138 | (3) |
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141 | (1) |
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7.3 Correlation dimension for earthquake catalogs |
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141 | (4) |
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7.3.1 California catalogs |
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141 | (3) |
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144 | (1) |
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145 | (1) |
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8 Focal mechanism orientation and source complexity |
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146 | (37) |
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8.1 Random stress tensor and seismic moment tensor |
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147 | (3) |
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8.1.1 Challenges in stress studies |
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147 | (1) |
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8.1.2 Cauchy stress distribution |
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148 | (1) |
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8.1.3 Random stress tensors |
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149 | (1) |
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8.2 Geometric complexity of earthquake focal zone and fault systems |
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150 | (4) |
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150 | (2) |
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8.2.2 CLOD sources and complexity |
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152 | (2) |
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8.3 Rotation of double-couple (DC) earthquake moment tensor and quaternions |
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154 | (5) |
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154 | (2) |
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8.3.2 DC moment tensor and quaternions |
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156 | (3) |
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8.4 Focal mechanism symmetry |
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159 | (4) |
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8.4.1 Symmetry of DC source |
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160 | (2) |
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8.4.2 DC symmetry and rotation angle |
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162 | (1) |
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8.5 Earthquake focal mechanism and crystallographic texture statistics |
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163 | (4) |
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8.6 Rotation angle distributions |
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167 | (3) |
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8.6.1 Uniform random rotation of DC sources |
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167 | (1) |
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8.6.2 Non-uniform distributions of random rotations |
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168 | (2) |
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8.7 Focal mechanisms statistics |
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170 | (7) |
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8.7.1 Disorientation angle statistics |
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170 | (3) |
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8.7.2 Distributions of rotation axes |
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173 | (1) |
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8.7.3 Rodrigues space statistics and display |
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174 | (2) |
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8.7.4 Summary of results for DC orientation |
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176 | (1) |
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8.8 Models for complex earthquake sources |
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177 | (8) |
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8.8.1 Complex point source solutions |
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177 | (2) |
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8.8.2 Higher-rank correlation tensors |
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179 | (4) |
| Part III Testable Forecasts |
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183 | (77) |
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9 Global earthquake patterns |
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185 | (21) |
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9.1 Earthquake time-space patterns |
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185 | (2) |
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9.2 Defining global tectonic zones |
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187 | (1) |
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9.3 Corner magnitudes in the tectonic zones |
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188 | (2) |
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9.4 Critical branching model (CBM) of earthquake occurrence |
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190 | (7) |
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190 | (2) |
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9.4.2 Earthquake clusters - independent events |
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192 | (1) |
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192 | (3) |
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9.4.4 Stochastic branching processes and temporal dependence |
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195 | (2) |
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9.5 Likelihood analysis of catalogs |
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197 | (7) |
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9.5.1 Statistical analysis results |
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197 | (6) |
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9.5.2 Comparison of results with the ETAS model |
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203 | (1) |
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9.6 Results of the catalogs' statistical analysis |
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204 | (2) |
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10 Long- and short-term earthquake forecasting |
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206 | (23) |
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10.1 Phenomenological branching models and earthquake occurrence estimation |
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206 | (1) |
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10.2 Long-term rate density estimates |
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207 | (8) |
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10.2.1 Low-resolution forecasts |
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207 | (3) |
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10.2.2 High-resolution global forecasts |
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210 | (1) |
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10.2.3 Smoothing kernel selection |
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210 | (3) |
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10.2.4 Comparing long-term forecasts |
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213 | (2) |
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10.3 Short-term forecasts |
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215 | (3) |
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10.4 Example: earthquake forecasts during the Tohoku sequence |
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218 | (6) |
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10.4.1 Long- and short-term earthquake forecasts during the Tohoku sequence |
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218 | (3) |
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10.4.2 Long-term earthquake rates for the Tokyo region |
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221 | (3) |
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10.5 Forecast results and their discussion |
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224 | (2) |
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10.6 Earthquake fault propagation modeling and earthquake rate estimation |
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226 | (3) |
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10.6.1 Earthquake extended rupture representation and earthquake rate estimation |
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227 | (1) |
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10.6.2 Earthquake fault propagation modeling |
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227 | (2) |
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11 Testing long-term earthquake forecasts: Likelihood methods and error diagrams |
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229 | (24) |
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229 | (1) |
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11.2 Log-likelihood and information score |
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230 | (5) |
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235 | (12) |
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11.3.1 Relation between the error diagram and information score |
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237 | (6) |
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11.3.2 Two-segment error diagrams and information score |
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243 | (2) |
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11.3.3 Information score for GCMT and PDE catalogs |
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245 | (2) |
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11.4 Tests and optimization for global high-resolution forecasts |
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247 | (3) |
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11.5 Summary of testing results |
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250 | (3) |
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12 Future prospects and problems |
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253 | (7) |
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12.1 Community efforts for statistical seismicity analysis and earthquake forecast testing |
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253 | (1) |
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12.1.1 Community Online Resource for Statistical Seismicity Analysis (CORSSA) |
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253 | (1) |
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12.1.2 Collaboratory for the Study of Earthquake Predictability (CSEP): Global and regional forecast testing |
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254 | (1) |
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12.2 Results and challenges |
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254 | (2) |
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256 | (4) |
| References |
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260 | (21) |
| Index |
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281 | |