lower mantle
The Electrical Conductivity of Liebermannite: Implications for Water Transport Into the Earth's Lower Mantle
... The Electrical Conductivity of Liebermannite: Implications for Water Transport Into the Earth’s Lower Mantle... Abstract 25.[r] ...
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Understanding seismic heterogeneities in the lower mantle beneath the Americas from seismic tomography and plate tectonic history
... 6. Conclusion [ 37 ] We have used waveform cross correlation to measure 37,000 differential traveltimes (P 1 P 2 and S 1 S 2 ) and 2000 PcP-P and ScS-S times from earthquakes and receivers along a wide corridor from ...
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Numerical study of creep in two-phase aggregates with a large rheology contrast : implications for the lower mantle
... Earth’s lower mantle is dominated by two minerals, magnesiowustite (Mg, Fe)O (Mw) and (Mg, Fe)SiO 3 perovskite (Mg-Pv) which are thought to exhibit very different rheo- logical ...of lower ...
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The Electrical Conductivity of Liebermannite: Implications for Water Transport Into the Earth's Lower Mantle
... The Electrical Conductivity of Liebermannite: Implications for Water Transport Into the Earth’s Lower Mantle... Abstract 25.[r] ...
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Comparing P and S wave heterogeneity in the mantle
... Robertson and Woodhouse [1996] have found that P and S-wave models are correlated to ∼2100 km depth but that the patterns of P and S-wave heterogeneity are different be- low that depth. Other studies focusing explicitly ...
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Stationary, oscillating or drifting mantle‐driven geomagnetic flux patches?
... heterogeneous lower mantle on the geomagnetic field is under debate, especially the question of whether high ‐latitude intense geomagnetic flux patches currently observed at the core surface are stationary, ...
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Experimental investigations of the deep Earth's mantle melting properties
... the lower mantle is also ...the mantle wedge and arc ...the mantle, as evidenced by seismic ...surrounding mantle because of its higher Fe-content and its lower ...deep ...
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Experimental investigation of the deep mantle melting properties
... mid-lower mantle, with formation of a basal magma ocean (Labrosse et ...Earth mantle implies a surface temperature higher than 2800 K ...silicate mantle (Nagahara and Ozawa, ...the ...
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The dynamics of plate boundaries over a convecting mantle
... to 0.17 g cm −3 km −1 s (in adequation to the recent results of Husson et al. (2011), comparable to the 140 earlier models of Conrad and Behn (2010), after Karato and Karki (2001)). This conversion is done under the ...
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Experimental evidence supports mantle partial melting in the asthenosphere
... anisotropy in the mantle, with the exception of the D ″ layer. (iii) The LVZ is associated with a significant reduction in the seismic quality factor (Q). (iv) Electrical conductivity measurements report a marked ...
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Mantle flow beneath La Réunion hotspot track from SKS splitting
... Acknowledgments This work was supported by the French Agence Nationale de la Recherche, project RHUM-RUM ANR-11-BS56-0013. Thanks to IRIS, GEOFON and GEOSCOPE global networks for the availability of high quality data. ...
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Earth Mantle Rheology Inferred from Homogenization Theories, chapitre 4
... The dislocation slip systems considered here are those used by [TOM 00] based on several sets of experimental results. They are listed in the first seven lines of Table 4.1 and illustrated in Figure 4.1. Easy slip occurs ...
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Lower Bounds by Birkhoff Interpolation
... Our lower bound results are specific to polynomials with real ...similar lower bounds for other fields, ...our lower bound theorems, we obtain a result on the linear independence of polynomials which ...
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South Pacific hotspot swells dynamically supported by mantle flows
... associated swells remain some of the most controversial topics in geodynamics. Here we construct a numerical model of the mantle flow beneath the French Polynesia region. Our study is based on a new regional ...
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Soft pomeron and lower trajectory intercepts
... The data does not allow further C = −1 trajectories. The quality of the fit is not improved by the introduction of one such trajectory, and all couplings are less that 1 per thousandth of the soft-pomeron coupling. We ...
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Sensitivity lower bounds from linear dependencies
... trivially 0. This completes the proof of orthogonality. 5 Strengthening Huang’s result Huang’s proof yields a lower bound on the graph degree when the number of vertices is large enough. We can strengthen this ...
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Angular distribution of lower room modes
... Angular distribution of lower room modes Donato, R. J. https://publications-cnrc.canada.ca/fra/droits L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site ...
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New Lower Bounds for ϵ-nets
... ranges are half-spaces in R d+1 . Thus, Theorem 1 follows immediately for even values of d, and with a slight loss in the constant, also for odd values (applying the lower bound for d − 1). J The system of boxes ...
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Lower bounds for k-distance approximation
... Consider a set P of N random points on the unit sphere of di- mension d − 1, and the symmetrized set S = P ∪ (−P ). The halving polyhedron of S is defined as the convex hull of the set of centroids of N distinct points ...
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Lower bounds for generalized unit regulators
... nous considérons le cas où E = E L/K 1 ∩ E L/K 2 , où K 1 et K 2 sont des corps quadratiques réels; Le régulateur associé croît alors exponentiellement en fonction du degré de L sur Q. Abstract. In 1999, Friedman and ...
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