This study is an extension of a techniques employed by Rapine et al. 2001. The objective is to determine the shear velocity structure of the crust and uppermost mantle in northern and southern Tibet. Data include phase and group velocity measurements from earthquakes crossing northern and southern Tibet.

FINAL RESULTS

• Paper revised for JGR, April 2002 (pdf)
• Details of surface wave inversions for shear velocity

Figure 4 (postscript)

Figure 5 (postscript)

Figure 6 (postscript)

PRELIMENARY WORK

• First version using imposed Moho at 70 km
• Inversion of GROUP velocity only
• Inversion of PHASE velocity only
• Inversion of GROUP and PHASE velocities
  (two-layered mantle)
• Inversion of GROUP and PHASE velocities
  (many-layered mantle)