Seismic Earth

Seismic Earth: Array Analysis of Broadband Seismograms......Page 3
Copyright
......Page 4
CONTENTS......Page 5
PREFACE......Page 6
Perspectives on Array Seismology and USArray......Page 7
REFERENCES......Page 12
1. INTRODUCTION......Page 13
2. RAYTRACE3D......Page 14
3.VELOCITY AND RATIO CASE STUDY......Page 16
4. MOHO TOPOGRAPHY CASE STUDY......Page 18
5. PLUME SHAPE CASE STUDY......Page 19
6. EARTHQUAKE LOCATION CASE STUDY......Page 24
APPENDIX:SEISMIC RAYTRACING, TOMOGRAPHY ANDEARTHQUAKE LOCATION IN ATHREE-DIMENSIONAL TETRAHEDRAL MESH......Page 27
REFERENCES......Page 41
1. INTRODUCTION......Page 43
2. HEURISTIC INTRODUCTION OF BANANA DOUGHNUT KERNELS......Page 44
3. TRAVEL TIME DELAYS......Page 46
4. BORN THEORY FOR SEISMIC WAVES......Page 47
5. SENSITIVITY KERNELS AT FINITE FREQUENCY......Page 48
7. APPLICATION TO VESUVIUS......Page 49
REFERENCES......Page 53
1. INTRODUCTION......Page 54
2. A BRIEF REVIEW OF TOMOGRAPHY  INIRREGULAR MESHES......Page 56
3. COMPUTATIONAL TOOLS AND TECHNIQUES......Page 58
4. SEISMIC APPLICATIONS OF IRREGULAR MESHES......Page 62
5. CONCLUSIONS......Page 67
REFERENCES......Page 68
Surface Wave Tomography Applied to the North American Upper Mantle......Page 71
2. OVERVIEW OF THE STUDY REGION......Page 72
3. SURFACE WAVE TOMOGRAPHY......Page 74
4. APPLICATION TO NORTH AMERICA......Page 76
6. PREFERRED MODEL......Page 80
7. CONCLUSIONS......Page 81
REFERENCES......Page 83
1. INTRODUCTION......Page 85
2. DATA AND DATA ANALYSIS......Page 86
3. FORWARD PROBLEM......Page 88
4. INVERSE PROBLEM......Page 91
5. TWO-PLANE-WAVE SOLUTIONS......Page 93
6. PHASE VELOCITY SOLUTIONS......Page 97
REFERENCES......Page 100
Imaging Three-Dimensional Anisotropy With Broadband Seismometer Arrays......Page 102
1. INTRODUCTION......Page 103
2. RESOLVING LATERAL VARIATIONS IN ANISOTROPY WITH SKS PHASES......Page 104
3. RESOLVING LATERAL VARIATIONS IN ANISOTROPY WITH SURFACE WAVES......Page 112
4. CONSTRAINING THREE-DIMENSIONAL ANISOTROPY WITH MULTIPLE DATA TYPES......Page 114
REFERENCES......Page 116
1. INTRODUCTION......Page 120
2. METHOD AND DATA......Page 121
3. COMPARISON OF MODELS OF RECENT EARTHQUAKES......Page 125
4. CURRENT TOPICS......Page 129
REFERENCES......Page 133
1. INTRODUCTION......Page 139
2. KIRCHHOFF MIGRATION......Page 140
3. WAVEFIELD CONTINUATION MIGRATION......Page 142
4. BACKGROUND VELOCITY ESTIMATION......Page 145
5. GULF OF MEXICO REAL DATA EXAMPLE......Page 147
7. CONCLUSIONS......Page 149
REFERENCES......Page 150
Imaging Teleseismic P to S Scattered Waves Using the Kirchhoff Integral......Page 151
2. METHODOLOGY......Page 152
3. APPLICATIONS......Page 154
4. DISCUSSION......Page 160
APPENDIX A1......Page 165
REFERENCES......Page 170
1. INTRODUCTION......Page 172
3. FUNDAMENTAL ASSUMPTIONS IN WAVE PROPAGATION......Page 173
5. MIGRATION/INVERSE SCATTERING......Page 175
6. REAL DATA PRAGMATICS......Page 181
REFERENCES......Page 185
Multichannel Inversion of Scattered Teleseismic Body Waves: Practical Considerations and Applicability......Page 187
2. INVERSION METHOD AND DATA PREPARATION......Page 188
3. RESOLUTION......Page 191
4. APPLICATIONS TO FIELD DATA......Page 196
5. FUTURE DIRECTIONS......Page 200
REFERENCES......Page 201
1. INTRODUCTION......Page 204
2. DESIGN OF THE MESH......Page 205
3. SOLVING THE WAVE EQUATION ON A SPECTRAL-ELEMENT GRID......Page 208
4. TIME INTEGRATION OF THE GLOBAL SYSTEM......Page 218
5. IMPLEMENTATION ON PARALLEL COMPUTERS......Page 219
6. NUMERICAL RESULTS......Page 220
7. CONCLUSIONS......Page 222
REFERENCES......Page 223
1. INTRODUCTION......Page 227
2. PHENOMENOLOGICAL APPROACH: SCALAR WAVES......Page 228
3. PHENOMENOLOGICAL TRANSPORT OF ELASTIC WAVES......Page 234
4. CONNECTION WITH THE WAVE EQUATION......Page 242
5. DISCUSSION AND CONCLUSION......Page 248
REFERENCES......Page 249