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Crustal Thickness estimates Below Quebec Seismic Stations Using Receiver Function Stacking

Crustal Thickness estimates Below Quebec Seismic Stations Using Receiver Function Stacking. Earthquakes and Earth Structure Presentation By Tiegan Hobbs Mar 23 rd , 2011. overview. study area. Step 1. Seismic Stations. Previous research by Andrew Hynes, among others. Gather Data.

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Crustal Thickness estimates Below Quebec Seismic Stations Using Receiver Function Stacking

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  1. Crustal Thickness estimates Below Quebec Seismic Stations Using Receiver Function Stacking Earthquakes and Earth Structure Presentation By Tiegan Hobbs Mar 23rd, 2011

  2. overview

  3. study area Step 1

  4. Seismic Stations • Previous research by Andrew Hynes, among others.

  5. Gather Data Stage 2

  6. Using IRIS JWEED • Query for events between 30-90o away, magnitude 6.0 or greater

  7. Quality Control Step 3

  8. Sorting Using SAC • An example of a ‘good’ seismogram from MATQ.

  9. Synthetics Step 4

  10. Modelling Synthetics: 25km: 2.9s30km: 3.5s35km: 4.1s40km: 4.8s45km: 5.3s50km: 5.9s

  11. stacking Step 5

  12. Receiver Functions

  13. Analysis Step 6

  14. Results of the Stack

  15. References • Crotwell, H. P., Owens, T.J., Ritsema, J. The TauP Toolkit: Flexible seismic travel-time and ray-path utilities. Seismological Research Letters 70, 154–160 (1999) • Darbyshire, F.A., Eaton, D.W., Frederiksen, A.W., Ertolahti, L. New insights into the lithosphere beneath the Superior Province from Rayleigh wave dispersion and receiver function analysis. Geophys. J. Int. 169 1043-1068 (2007) • Eaton, D.W., Dineva, S., Mereu, R. Crustal thickness and Vp/Vs variations in the Grenville orogen (Ontario, Canada) from analysis of teleseismic receiver functions. Tectonophysics420 223-238 (2006) • Helffrich, G. Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation. Bulletin of the Seismological Society of America. 96(1) 344-347 (2006) • Ludden, J., Hynes, A. The Lithoprobe Abitibi-Grenville transect: two billion years of crust formation and recycling in the Precambrian Shield of Canada. Can. J. Earth Sci. 37 459-476 (2000) • Rondenay, S., Bostock, M., Hearn, T., White, D., Ellis, R. Lithospheric assembly and modification of the SE Canadian Shield: Abitibi-Grenville seismic experiment. J. of Geophys. Res. 105(B6) 13,735-13,754 (2000) • Zhu, L., Kanamori, H. Moho depth variation in Southern California from teleseismic receiver functions. J. Geophys. Res. 105(B2) 2969-2980 (2000)

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