Transcript Tomografía con ondas superficiales en el noroeste de Suramérica

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
?
Taboada et al., 2000
In Audemar et al., 1999
• 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
Events similar to ...
Miller et al., 2009
Questions
•
Range of station-event distances
•
Range of surface wave periods
•
Preprocessing of waveforms