HR: 0800h
AN: T41A-0381    [Abstracts]
TI: Joint Inversion of Receiver Functions and Surface Waves in the Main Ethiopian Rift
AU: * Keranen, K
EM: kkeranen@stanford.edu
AF: Stanford University, Department of Geophysics, Stanford, CA 94305, United States
AU: Klemperer, S L
EM: sklemp@stanford.edu
AF: Stanford University, Department of Geophysics, Stanford, CA 94305, United States
AU: Mammo, T
EM: t_mammo@yahoo.com
AF: Addis Ababa University, Department of Earth Science P.O.Box 1176, Addis Ababa, AAU, Ethiopia
AU: Julia, J
EM: jjulia@geosc.psu.edu
AF: Pennsylvania State University, Department of Geosciences, University Park, PA 16801, United States
AU: Nyblade, A A
EM: andy@geosc.psu.edu
AF: Pennsylvania State University, Department of Geosciences, University Park, PA 16801, United States
AB: We jointly invert receiver functions and surface wave dispersion measurements from 10 to 175 sec to study the crustal and upper mantle structure beneath the Main Ethiopian Rift and the surrounding rift plateaus. These models provide a 1-D velocity profile beneath broadband stations from the 2001-2003 EAGLE experiment (Ethiopia-Afar Geoscientific Lithospheric Experiment), extending our knowledge of crustal structure beneath these stations beyond our previous knowledge of Moho depth. Thirty stations were deployed in Phase I of EAGLE for 16 months, with 50 additional stations deployed for 4 months in Phase II over a smaller region focused on the rift valley (Stuart et al., 2006, Geol Soc Lond Spec Pub 259). Our models help constrain the deep crustal structure of the Ethiopian Plateau and provide information on crustal modification away from the active source profiles.
DE: 7205 Continental crust (1219)
DE: 8109 Continental tectonics: extensional (0905)
SC: Tectonophysics [T]
MN: 2007 Fall Meeting