Results 51 to 60 of about 204 (113)

SKS and SPdKS sensitivity to two-dimensional ultralow-velocity zones

, 2009
Seismic wave propagation through two-dimensional core-mantle boundary (CMB) ultralow-velocity zones (ULVZs) is modeled using a global pseudospectral algorithm.
Rondenay, Stephane, Van Ark, Emily M., Cormier, Vernon F.   +2 more
core   +1 more source

Master of Science [PDF]

, 2013
thesisWe collected a new data set of 1354 broadband SPdKS waveforms sampling the western Pacific Ocean region. These data indicate that multiple ultra-low velocity zones (ULVZs) exist in this region.
Jensen, Kevin James
core  

The evolvement of ULVZ at LLSVP margins--reference model with B=3.0 and etaC=1.0

<p>This tar file is created and uploaded for the submission of the manuscript titled '<em><span>The evolution of dense ULVZs originating outside LLSVPs and implications for dynamics at LLSVP margins</span></em>' to the ...
Liu, Xi
core   +1 more source

A compositional origin to ultralow-velocity zones

, 2015
We analyzed vertical component short-period ScP waveforms for 26 earthquakes occurring in the Tonga-Fiji trench recorded at the Alice Springs Array in central Australia.
Rost, S, Sebastian Rost, Brown, SP, Miyagi, L, Lowell Miyagi, Samuel P. Brown, Michael S. Thorne, Thorne, MS   +7 more
core   +1 more source

A geodynamic and mineral physics model of a solid-state ultralow-velocity zone

, 2021
Recent results (Wicks et al., 2010) suggest that a mixture of iron-enriched (Mg,Fe)O and ambient mantle is consistent with wavespeed reductions and density increases inferred for ultralow-velocity zones (ULVZs).
Dan J. Bower, June K. Wicks, Jennifer M. Jackson, Michael Gurnis   +3 more
core   +1 more source

Globally distributed subducted materials along the Earth's core-mantle boundary: Implications for ultralow velocity zones. [PDF]

Sci Adv, 2023
Hansen SE, Garnero EJ, Li M, Shim SH, Rost S.   +4 more
europepmc   +1 more source

Tracking the origin of ultralow velocity zones at the base of Earth's mantle. [PDF]

Natl Sci Rev, 2021
Chen J.
europepmc   +1 more source

The evolution of the Galápagos mantle plume. [PDF]

Sci Adv, 2023
Soderman CR, Shorttle O, Gazel E, Geist DJ, Matthews S, Williams HM.   +5 more
europepmc   +1 more source

Melting and defect transitions in FeO up to pressures of Earth's core-mantle boundary. [PDF]

Nat Commun, 2023
Dobrosavljevic VV, Zhang D, Sturhahn W, Chariton S, Prakapenka VB, Zhao J, Toellner TS, Pardo OS, Jackson JM.   +8 more
europepmc   +1 more source

Some dynamical consequences of partial melting in Earth's deep mantle

, 2007
International audienceWe use regional scale numerical models of mantle convection to investigate the simple hypothesis that seismically anomalous thin patches of Earth's lowermost mantle, termed “ultralow-velocity zones” or ULVZ, are derived from partial
Tackley, Paul J., J. Tackley, Paul, Hernlund, John W., W. Hernlund, John   +3 more
core   +1 more source