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Transcript

  • 1. Introduction 20˚ 0˚ nd A ea Brazilian craton n Nazca Cordiller -20 Plate a -40˚ South American Plate Antarctic ScS Plate -60˚ 260˚ 280˚ 300˚ 320˚ 340˚ 01/10
  • 2. ScS ScS2 sScS2 sScS sScS3 sScS4 ScS4 ScS3 ScS 1000 2000 3000 [sec] 02/10
  • 3. ScS ScS2 sScS2 sScS sScS3 sScS4 ScS4 ScS3 ScS 1000 2000 3000 [sec] 02/10
  • 4. ScS 1997 11 28 0˚ 200 100 600 500 400 300 0 BDFB 601km 1994 69 NNA NNA Mw=6.6 700 -20˚ 500 600 100 400 200 0 0 30 1994 6 9 -40˚ 647km Mw=8.2 0.965 1000 2000 3000 [sec] 260˚ 280˚ 300˚ 320˚ 03/10
  • 5. ScS 40km 50km Q = 400~900 Q = 260 04/10
  • 6. ScS 40km 50km Q = 400~900 Q = 260 260 - 360 200 - 240 04/10
  • 7. ScS 40km 50km High Q Q = 260 NNA BDFB 410 660 high-Q CM B 04/10
  • 8. Receiver Function S P P 05/10
  • 9. Receiver Function S P { P 05/10
  • 10. Receiver Function P 05/10
  • 11. Receiver Function 40˚ 20˚ North America BDFB & Mexico 20km 40km 0˚ NNA BDFB -20˚ P -40˚ South Sandwich Islands -60˚ 220˚ 240˚ 260˚ 280˚ 300˚ 320˚ 340˚ 0˚ 0 20 40 [sec] 06/10
  • 12. Receiver Function 0 20km 50 40km BDFB 20km 40km 100 P 150 [km] 3.2 3.6 4.0 4.4 [km/s] 0 20 40 [sec] 06/10
  • 13. Receiver Function 40˚ 20˚ North America NNA 25km 60km & Mexico 0˚ 35km 70km NNA BDFB -20˚ P -40˚ South Sandwich Islands -60˚ 220˚ 240˚ 260˚ 280˚ 300˚ 320˚ 340˚ 0˚ 0 20 40 [sec] 07/10
  • 14. Receiver Function 40˚ 20˚ North America NNA 25km 60km & Mexico BDFB 0˚ 35km 70km NNA BDFB -20˚ P P -40˚ South Sandwich Islands -60˚ 220˚ 240˚ 260˚ 280˚ 300˚ 320˚ 340˚ 0˚ 0 20 40 [sec] 07/10
  • 15. Receiver Function 0 50 NNA 25km 60km 35km 70km 100 P BDFB 150 [km] 3.2 3.6 4.0 4.4 [km/s] 0 20 40 [sec] 07/10
  • 16. Receiver Function 60, 70km NNA 25km 60km 35km 70km P 60, 70km 0 20 40 [sec] 07/10
  • 17. Summary 20km 25km 35km 40km 60km Q 70km 410km 660km 08/10
  • 18. Additional Results 09/10
  • 19. Conclusion 10/10