Now showing items 1-10 of 10
Teleseismic P-Wave Tomogram of the Yellowstone Plume
Author(s):Yuan, H. Y.; Dueker, Ken; Yuan, H. Y.; Dueker, Ken
Inversion of a new data set of teleseismic P-wave traveltimes from three PASSCAL seismic deployments around the Yellowstone hotspot reveals a 100 km diameter upper mantle plume that extends from the Yellowstone volcanic ...
Testing Five of the Simplest Upper Mantle Anisotropic Velocity Parameterizations Using Teleseismic S and SKS Data from the Billings, Montana Passcal Array
Author(s):Yuan, H. Y.; Dueker, Ken; Schutt, D. L.; Yuan, H. Y.; Dueker, Ken; Schutt, D. L.
Five of the simplest parameterizations of upper mantle anisotropy are tested and ranked for a data set collected on a dense temporary PASSCAL seismic array located 100-km NE of Yellowstone. These hexagonal symmetry anisotropy ...
Mantle Transition Zone Topography and Structure Beneath the Yellowstone Hotspot
Author(s):Fee, D.; Dueker, Ken; Fee, D.; Dueker, Ken
The depths of the 410 and 660 km discontinuities beneath the Yellowstone hotspot are constrained using common conversion point imaging of P-wave receiver functions. The mean depth of the 410 and 660 is 411±1.5 km and 656±1.6 ...
Imaging Yellowstone Plume-Lithosphere Interactions from Inversion of Ballistic and Diffusive Rayleigh Wave Dispersion and Crustal Thickness Data
Author(s):Stachnik, J. C.; Dueker, Ken; Schutt, D. L.; Yuan, H.; Stachnik, J. C.; Dueker, Ken; Schutt, D. L.; Yuan, H.
Diffusive and ballistic Rayleigh wave dispersion data from three PASSCAL seismic deployments are combined with crustal thickness constraints from receiver function analysis to produce a high-resolution shear velocity image ...
Upper Mantle P-Wave Velocity Structure from Passcal Teleseismic Transects Across Idaho, Wyoming and Colorado
Author(s):Dueker, Ken; Yuan, H. Y.; Dueker, Ken; Yuan, H. Y.
Inversion of teleseismic P-time residuals along two linear seismic arrays provides well-resolved inverse images of the upper mantle. Low velocity bodies beneath the Yellowstone Hotspot Track and the Grand Mesa volcanic ...
Sporadic Low-Velocity Layer Atop the Western Us Mantle Transition Zone and Short-Wavelength Variations in Transition Zone Discontinuities, A
Author(s):Schmandt, B.; Dueker, Ken; Hansen, S. M.; Jasbinsek, J. J.; Zhang, Z.; Schmandt, B.; Dueker, Ken; Hansen, S. M.; Jasbinsek, J. J.; Zhang, Z.
Teleseismic receiver function analysis of data from six dense arrays in the western U. S. is used to investigate mantle transition zone (MTZ) discontinuities and the prevalence of a low-velocity layer atop the 410 km ...
Characterizing the 410 km Discontinuity Low-Velocity Layer Beneath the La Ristra Array in the North American Southwest
Author(s):Jasbinsek, J. J.; Dueker, Ken; Hansen, S. M.; Jasbinsek, J. J.; Dueker, Ken; Hansen, S. M.
Receiver functions recorded by the 54-station 920 km long Program for Array Seismic Studies of the Continental Lithosphere-Incorporated Research Institutions for Seismology Colorado Plateau/Rio Grande Rift Seismic Transect ...
Crust and Upper Mantle Velocity Structure of the Yellowstone Hot Spot and Surroundings
Author(s):Schutt, D. L.; Dueker, Ken; Yuan, H.; Schutt, D. L.; Dueker, Ken; Yuan, H.
The Yellowstone hot spot has recently been shown to be a plume that extends into the transition zone. At roughly 60-120 km depth, the plume material rising beneath Yellowstone Park is sheared SW by North America Plate ...
Ubiquitous Low-Velocity Layer Atop the 410-km Discontinuity in the Northern Rocky Mountains
Author(s):Jasbinsek, J.; Dueker, Ken; Jasbinsek, J.; Dueker, Ken
Receiver functions from three 30-station IRIS-PASSCAL small-aperture arrays (2-15 km station spacing) operated for 10 months each in the northern Rocky Mountains show a ubiquitous negative polarity P to S conversion just ...
Crustal Structure and Thickness Along the Yellowstone Hot Spot Track: Evidence for Lower Crustal Outflow from Beneath the Eastern Snake River Plain
Author(s):Yuan, H.; Dueker, Ken; Stachnik, J.; Yuan, H.; Dueker, Ken; Stachnik, J.
Receiver functions from seismic stations about the Yellowstone hot spot track are migrated to depth using a Vp/Vs map constructed from stacking of the direct and free surface Moho reverberations (i.e., H-K analysis) and a ...