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List of Slides
- Slide 0: INTRO/talkcover.gif
- Slide 1: INTRO/why.gif
- Slide 2: INTRO/whatis.gif
- Slide 3: INTRO/convert.gif
- Slide 4: INTRO/issue1.gif
- Slide 5: INTRO/issue2.gif
- Slide 6: INTRO/damping.gif
- Slide 7: INTRO/model.gif
- Slide 8: INTRO/interface.gif
- Slide 9: INTRO/tetrahedra.gif
- Slide 10: INTRO/ray.gif
- Slide 11: INTRO/ptop.gif
- Slide 12: INTRO/A.15.1.gif
- Slide 13: INTRO/shoot.gif
- Slide 14: SHOOT_EXAMPLE/shootgeom.gif Three source points from which rays are shot.
- Slide 15: SHOOT_EXAMPLE/drape2_grid.gif Ray Shooting. Simple 3D P velocity model. A vertical slice, colored with red slow and purple fast, is shown. The model contains a water layer (colored aqua).
- Slide 16: SHOOT_EXAMPLE/drape2.gif Ray Shooting. Raypaths from three buried sources to the surface of the model
- Slide 17: INTRO/ptopexample.gif
- Slide 18: PTOP_EXAMPLE/ptopgeom.gif Raytracing geometry, showing source (triangle) and three lines of receivers.
- Slide 19: PTOP_EXAMPLE/drape_model2.gif Raytracing. 3D P velocity model containing low-velocity zone.
- Slide 20: PTOP_EXAMPLE/starplot.gif Raytracing. "Star Plot", showing how rays radiating out from a single source (at x=10, y=0) intersect with the surface of the model.
- Slide 21: PTOP_EXAMPLE/drape2_0_tt.gif Raytracing. Reduced traveltime from a source at x=10, y=0 to a linear array at y=0 (i.e. a fan geometery).
- Slide 22: PTOP_EXAMPLE/drape2_5_tt.gif Raytracing. Reduced traveltime from a source at x=10, y=0 to a linear array at y=5 (i.e. a fan geometery).
- Slide 23: PTOP_EXAMPLE/drape2_10_tt.gif Raytracing. Reduced traveltime from a source at x=10, y=0 to a linear array at y=10 (i.e. a fan geometery).
- Slide 24: INTRO/locateexample.gif
- Slide 25: TELE_EXAMPLE/drape_model.gif Earthquake Location. Simple 3D P velocity model.
- Slide 26: LOCATE_EXAMPLE/location.gif Earthquake Location. Data from a rectangular array of 30 stations on the surface. The estimated location (trianges) move towards the true location (circle).
- Slide 27: JHD_EXAMPLE/jhd.gif
- Slide 28: JHD_EXAMPLE/jhdex.gif
- Slide 29: JHD_EXAMPLE/drape.gif Joint Hypocentral Relocation Example. Vertical slice through model. Stations (squares). Events: true locations (large cirlces), starting locations (stars), final locations (small circles).
- Slide 30: JHD_EXAMPLE/plot.gif Joint Hypocentral Relocation Example. Map view. Stations (squares). Events: true locations (large cirlces), starting locations (stars), final locations (small circles).
- Slide 31: INTRO/vtomo.gif
- Slide 32: VINVERT_EXAMPLE/vinvertgeom.gif Velocity Inversion geometry, showing sources (triangles) and receivers (circles).
- Slide 33: VINVERT_EXAMPLE/truemodel.gif P Velocity Inversion. True model.
- Slide 34: VINVERT_EXAMPLE/drape_model.gif P Velocity Inversion. Starting model.
- Slide 35: VINVERT_EXAMPLE/newmodel.gif P Velocity Inversion. Result of inversion.
- Slide 36: INTRO/qtomo.gif
- Slide 37: Q_EXAMPLE/qgeom.gif Attenuation Inversion Example. Inversion geometry showing sources (triangles) and receivers (circles)
- Slide 38: Q_EXAMPLE/drape2.gif Attenuation. Q model, with a background of Q=500 and an anomaly of Q=50.
- Slide 39: Q_EXAMPLE/q.gif Attenuation. Path averaged Q computed for east-west part of surface array and two source, one at the left (circles) and one at the right (squares)
- Slide 40: Q_EXAMPLE/newmodel.gif Attenuation. Inversion results, based on synthetic data from two sources and T-array in center of model.
- Slide 41: INTRO/jpstomo.gif
- Slide 42: PS_EXAMPLE/psgeom.gif Joint P and P:S ratio inversion, using two sources (trianges) and an array of receivers (circles).
- Slide 43: PS_EXAMPLE/truemodel.gif Joint P and P:S ratio inversion. P velocity is shown, P:S is everywhere 1.78.
- Slide 44: PS_EXAMPLE/newmodel.gif Joint P and P:S ratio inversion. P velocity after 1 iteration.
- Slide 45: PS_EXAMPLE/newmodel2.gif Joint P and P:S ratio inversion. P velocity after 2 iterations. The P:S ratio (not shown) has moved from an initial value of 1.76 to values close to 1.78.
- Slide 46: INTRO/teleexample.gif
- Slide 47: INTRO/teleptop.gif
- Slide 48: TELE_EXAMPLE/telegeom.gif Teleseismic Example. Receiver geometry.
- Slide 49: TELE_EXAMPLE/drape_model2.gif Teleseismic Example. Simple 3D model of P wave velocity. Note low-velocity zone in center.
- Slide 50: TELE_EXAMPLE/tele_drape2.gif Teleseismic Example. Ratpaths from two teleseisms to stations on the surface of the model.
- Slide 51: TELE_EXAMPLE/tele_tt.gif Teleseismic Example. Traveltimes of two teleseisms arriving from left (circles) and right (triangles).
- Slide 52: INTRO/teleinvert.gif
- Slide 53: TELE_EXAMPLE/drape_model.gif Teleseismic Example. Starting model for P wave traveltime inversion.
- Slide 54: TELE_EXAMPLE/tele_new_model.gif Teleseismic Example. Result after 1 iteration
- Slide 55: TELE_EXAMPLE/tele_new_model_2.gif Teleseismic Example. Results after 2 iterations
- Slide 56: TELE_EXAMPLE/drape_model2.gif Teleseismic Example. True model.
- Slide 57: TVINVERT_EXAMPLE/tv.gif
- Slide 58: TVINVERT_EXAMPLE/drape_model2.gif Joint Teleseismic/Local Inversion. True model.
- Slide 59: TVINVERT_EXAMPLE/telegeom.gif Joint Teleseismic/Local Inversion. Geometry of experiment. Stars: local events. Circles: Stations.
- Slide 60: TVINVERT_EXAMPLE/tele_drape2.gif Joint Teleseismic/Local Inversion. Teleseismic raypaths through true model.
- Slide 61: TVINVERT_EXAMPLE/tele_tt.gif Joint Teleseismic/Local Inversion. Telseismic arrival times. Squares, teleseism from left; Triangles, telseism from right.
- Slide 62: TVINVERT_EXAMPLE/invert_drape2.gif Joint Teleseismic/Local Inversion. Local raypaths through true model.
- Slide 63: TVINVERT_EXAMPLE/invert_tt.gif Joint Teleseismic/Local Inversion. Telseismic arrival times, reduced to 6.5 km.s. Squares, teleseism from left; Triangles, telseism from right.
- Slide 64: TVINVERT_EXAMPLE/drape_model.gif Joint Teleseismic/Local Inversion. Starting model.
- Slide 65: TVINVERT_EXAMPLE/tele_new_model.gif Joint Teleseismic/Local Inversion. After first iteration.
- Slide 66: TVINVERT_EXAMPLE/tele_new_model_2.gif Joint Teleseismic/Local Inversion. After second iteration.
- Slide 67: INTRO/rwexample0.gif
- Slide 68: REFL_EXAMPLE/reflgeom1.gif PmP Ray Shooting Example. Source losations.
- Slide 69: REFL_EXAMPLE/drape2_grid.gif PmP Ray Shooting Example. Simple 3D P velocity model with low velocity zone.
- Slide 70: REFL_EXAMPLE/drape2.gif PmP Ray Shooting Example. Raypaths from three buried sourced to the surface of the model.
- Slide 71: INTRO/rwexample1.gif
- Slide 72: REFL_EXAMPLE/reflgeom2.gif PmP Raytracing Example. Source (triangle) and receivers (circles). Note receivers form three linear arrays iin fan-shot geometry with the source.
- Slide 73: REFL_EXAMPLE/drape2.star.gif PmP Raytracing Example. Plot of "star file". Rays radiating from the single buried source at x=-10, y=0 intersect the top of the model at the cirlces.
- Slide 74: REFL_EXAMPLE/drape2_1_tt.gif PmP Raytracing Example. Reduced traveltime curve for a fan shot geometry. The shot is at (x, y) = (-10, 0) and the linear array is at x=1.
- Slide 75: REFL_EXAMPLE/drape2_5_tt.gif PmP Raytracing Example. Reduced traveltime curve for a fan shot geometry. The shot is at (x, y) = (-10, 0) and the linear array is at x=5.
- Slide 76: REFL_EXAMPLE/drape2_10_tt.gif PmP Raytracing Example. Reduced traveltime curve for a fan shot geometry. The shot is at (x, y) = (-10, 0) and the linear array is at x=10.
- Slide 77: INTRO/rwexample2.gif
- Slide 78: INTRO/pmptomo.gif
- Slide 79: REFL_EXAMPLE/reflgeom3.gif PmP Interface Inversion Example. Source (triange) and receivers (circles).
- Slide 80: REFL_EXAMPLE/drape_model.gif PmP Interface Inversion Example. Starting model for inversion for reflector depth. The data are 550 PmP rays from a single source to a rectangular grid of receivers at the top of the model, with the true model having a 100 m perturbation of Moho topograhpy, concentrated near the surface of the model.
- Slide 81: REFL_EXAMPLE/TMS.gif PmP Interface Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and starting model.
- Slide 82: REFL_EXAMPLE/TMI.gif PmP Interface Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of inversion.
- Slide 83: INTRO/rwexample3.gif
- Slide 84: INTRO/jpmptomo.gif
- Slide 85: REFL_EXAMPLE/reflgeom4.gif Joint P-PmP Inversion Example. Two (large triangle) sources for P rays and one (small triangle) of PmP rays. Sparse cross-shaped array (large circles) for P wave receivers, and dense array (small circles) of PmP wave receivers.
- Slide 86: REFL_EXAMPLE/drape_model4.gif Joint P-PmP Inversion Example. Both P velocity and Moho depth are parameters. This is the true model.
- Slide 87: REFL_EXAMPLE/drape_model.gif Joint P-PmP Inversion Example. Starting model.
- Slide 88: REFL_EXAMPLE/VIinvert_newmodel1.gif Joint P-PmP Inversion Example. Iteration 1.
- Slide 89: REFL_EXAMPLE/VIinvert_newmodel2.gif Joint P-PmP Inversion Example. Iteration 2.
- Slide 90: REFL_EXAMPLE/VIinvert_newmodel3.gif Joint P-PmP Inversion Example. Iteration 3.
- Slide 91: REFL_EXAMPLE/VIinvert_newmodel4.gif Joint P-PmP Inversion Example. Iteration 4.
- Slide 92: REFL_EXAMPLE/VIinvert_newmodel5.gif Joint P-PmP Inversion Example. Iteration 5.
- Slide 93: REFL_EXAMPLE/VIinvert_newmodel6.gif Joint P-PmP Inversion Example. Iteration 6.
- Slide 94: REFL_EXAMPLE/VIinvert_newmodel7.gif Joint P-PmP Inversion Example. Iteration 7.
- Slide 95: REFL_EXAMPLE/VIinvert_newmodel8.gif Joint P-PmP Inversion Example. Iteration 8.
- Slide 96: REFL_EXAMPLE/VIinvert_newmodel9.gif Joint P-PmP Inversion Example. Iteration 9.
- Slide 97: REFL_EXAMPLE/VIinvert_newmodel10.gif Joint P-PmP Inversion Example. Iteration 10.
- Slide 98: REFL_EXAMPLE/VIinvert_newmodel11.gif Joint P-PmP Inversion Example. Iteration 11.
- Slide 99: REFL_EXAMPLE/drape_model4.gif Joint P-PmP Inversion Example. True Model.
- Slide 100: REFL_EXAMPLE/VITMS.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and starting model.
- Slide 101: REFL_EXAMPLE/VITMI1.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 1.
- Slide 102: REFL_EXAMPLE/VITMI2.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 2.
- Slide 103: REFL_EXAMPLE/VITMI3.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 3.
- Slide 104: REFL_EXAMPLE/VITMI4.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 4.
- Slide 105: REFL_EXAMPLE/VITMI5.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 5.
- Slide 106: REFL_EXAMPLE/VITMI6.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 6.
- Slide 107: REFL_EXAMPLE/VITMI7.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 7.
- Slide 108: REFL_EXAMPLE/VITMI8.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 8.
- Slide 109: REFL_EXAMPLE/VITMI9.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 9.
- Slide 110: REFL_EXAMPLE/VITMI10.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 10.
- Slide 111: REFL_EXAMPLE/VITMI11.gif Joint P-PmP Inversion Example. Contour map (1 m contours) of difference in Moho topograhy between true model and result of Iteration 11.