Surface wave tomography in Northwestern South America

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Presentation transcript:

Surface wave tomography in Northwestern South America Juan Carlos Bermúdez Barrios (M. Sc. Student) Maria Cristina Dimaté Castellanos (Thesis Director)

(A. Taboada, L. Rivera, et al., Tectonics, 2000) 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 ? Taboada et al., 2000 In Audemar et al., 1999

Nazca and Caribbean geometry Corredor, 2000)

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

Events similar to ... Miller et al., 2009

Questions Range of station-event distances Range of surface wave periods Preprocessing of waveforms