surface wave tomography in northwestern south america juan carlos bermúdez barrios (m. sc. student)...

Surface wave tomography in Northwestern South America

Juan Carlos Bermúdez Barrios (M. Sc. Student)Maria Cristina Dimaté Castellanos (Thesis Director)

Tectonic context

• Northwestern South America: convergence zone between Nazca, Caribbean plates, Chocó-Panamá Block and South American Plates.

• Broad deformation zone in the Colombian Andes

(A. Taboada, L. Rivera, et al., Tectonics, 2000)

Problems to solve• Plate boundaries: Caribbean plate southern boundary in Colombia

In Audemar et al., 1999Taboada et al., 2000

?

• Nazca and Caribbean geometry

Corredor, 2000)

• ... and Panamá Block

(A. Taboada, L. Rivera, et al., Tectonics, 2000)

•Lateral variations in velocity corresponding to large tectonic provinces: Panamá block, Andean Block.

• Moho depth

Data

Stations Map

Red triangles: IRIS stations

Blue triangles: RSNC stations

Miller et al., 2009

Events similar to ...

Questions

• Range of station-event distances

• Range of surface wave periods

• Preprocessing of waveforms