Plumes in a convecting mantle: Models and observations for individual hotspots

By B. Steinberger. 2000

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In Geophysics

Citations in the corpus

Age, spreading rates, and spreading asymmetry of the world's ocean crust (2008, background): “(a) Half-spreading rates and (b) percentage of crustal accretion of conjugate plates with hot spot locations [Steinberger, 2000] overlain as open circles.”
Radial seismic anisotropy as a constraint for upper mantle rheology (2007, background): “1a. Red circles are hotspot locations from the compilation of Steinberger (2000).”
Large-scale lithospheric stress field and topography induced by global mantle circulation (2001, neutral): “spots, with area of dots proportional to estimates of anomalous mass £ux, according to our previous compilation [24], and plate”
Models of large‐scale viscous flow in the Earth's mantle with constraints from mineral physics and surface observations (2006, methodology): “The original method was modified to consider depth-dependent gravity (from PREM), and to include the effects of compressibility (as described in Steinberger 2000, following Panasyuk et al. 1996), and of deflections δz of phase boundaries at depth 400 and 660 km in thermal equilibrium.”
On the uncertainties in hot spot reconstructions and the significance of moving hot spot reference frames (2005, methodology): “Given the overwhelming evidence that this does not hold true [Antretter et al., 2002; Molnar and Stock, 1987; O’Neill et al., 2003; Steinberger, 2000, 2002; Steinberger and O’Connell, 1998, 2000; Tarduno and Cottrell, 1997; Tarduno and Gee, 1995; Van Fossen and Kent, 1992], we suggest that absolute…”
LINKS BETWEEN LONG‐LIVED HOT SPOTS, MANTLE PLUMES, D″, AND PLATE TECTONICS (2004, background): “The movement of the hot spots is thus interpreted to reflect the influence of lower mantle flow on the plume source at the base of the mantle [e.g., Steinberger, 2000; Steinberger and O’Connell, 1998, 2000; Steinberger et al. 2004].”
A comparison of tomographic and geodynamic mantle models (2002, background): “…have attempted to reconstruct the convective flow of the mantle [e.g., Ricard et al., 1993; Lithgow-Bertelloni and Richards, 1995, 1998;Bunge et al., 1998;Bunge and Grand, 2000; Steinberger, 2000a, 2000b] and their results have been used to explain the current pattern of seismic heterogeneities.”
Constraints on lithosphere net rotation and asthenospheric viscosity from global mantle flow models and seismic anisotropy (2010, background): “…et al., 2008; Di Giuseppe et al., 2009], the coupling between tectonic plates and mantle flow [Becker, 2006; Becker and Faccenna, 2009], the rise of plumes within the flowing mantle [e.g., Steinberger, 2000; Steinberger et al., 2004], and long‐term sea level change [Conrad andHusson, 2009].”
Seismic tomography, surface uplift, and the breakup of Gondwanaland: Integrating mantle convection backwards in time (2003, background): “For the earth, the lower boundary layer is thought to produce thin, rising plume jets that exert minimal influence on mantle-scale flow [e.g., Steinberger and O’Connell, 1998; Steinberger, 2000].”
Statistical properties of seismic anisotropy predicted by upper mantle geodynamic models (2006, neutral): “Using the bilinear fit, we compute an average misfit for predicted g of Dg � 0.0044 (assuming no error in e), and for d of Dd � 0.0075 using the synthetics of Figure 8. Other geodynamic model synthetics for xc =2 show very similar data distributions, for instance when different radial viscosity prof”
Seismic structure and origin of hotspots and mantle plumes (2001, background): “Steinberger [11] calculated the motion of hotspots in East Africa and the deformation of their underlying plume conduits with models of global mantle £ow and suggested the presence of comparatively broad upwellings rather than localized plumes.”
A geodynamic model of plumes from the margins of Large Low Shear Velocity Provinces (2012, result): “Given a typical time span of 100 Myr, this corresponds to a speed of motion 1–2 cm/yr or less, in accordance with observations and earlier models of hot spot motion [Steinberger, 2000] for most hot spots.”