Probing the critical zone using passive- and active-source estimates of subsurface shear-wave velocities

Russell Patrick Callahan1, Nicholas James Taylor2, Sylvain Pasquet2, Ken George Dueker3, Clifford S Riebe2,4 and Steve Holbrook5,6, (1)University of Wyoming, Department of Geology and Geophysics, Laramie, United States, (2)University of Wyoming, Laramie, WY, United States, (3)University of Wyoming, Department of Geology and Geophysics, Laramie, WY, United States, (4)University of Wyoming, Laramie, United States, (5)Virginia Tech, Department of Geosciences, Blacksburg, United States, (6)University of Wyoming, Department of Geology & Geophysics, Laramie, WY, United States