Is the lower-mantle rheology Newtonian today?

Variational principles for the momentum

Variational principles for the momentum equation of mantle convection with Newtonian and power-law rheologies

✍ Ctirad Matyska 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 530 KB

How flat is the lower-mantle temperature

How flat is the lower-mantle temperature gradient?

✍ Marc Monnereau; David A. Yuen 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 457 KB

Regional Correlation Analysis between Se

Regional Correlation Analysis between Seismic Heterogeneity in the Lower Mantle and Subduction in the Last 180 Myr: Implications for Mantle Dynamics and Rheology

✍ H. Čížková; O. Čadek; A. Slancová 📂 Article 📅 1998 🏛 Springer 🌐 English ⚖ 635 KB

Texture of (Mg,Fe)SiO3 perovskite and fe

Texture of (Mg,Fe)SiO3 perovskite and ferro-periclase aggregate: Implications for rheology of the lower mantle

✍ Daisuke Yamazaki; Takashi Yoshino; Takuya Matsuzaki; Tomoo Katsura; Akira Yoneda 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 931 KB

Dynamical effects of a temperature- and

Dynamical effects of a temperature- and pressure-dependent lower-mantle rheology on the interaction of upwellings with the transition zone

✍ Volker Steinbach; David A. Yuen 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 1019 KB

The global network of plate boundaries c

The global network of plate boundaries can be divided into two discrete subnetworks containing the spreading and subduction boundaries, respectively. We advocate that this division is a stable pattern that derives from consistency rules in rigid-plate rotations. Subduction is distributed along a single, long subnetwork, hence organizing the mantle convection as a single, long downwelling wall and two lower mantle upwelling columns, at the Pacific and African sides of the Earth, respectively. The columns should merge upward between Antarctica and Australia to reach the single, long spreading subnetwork. The flow encircles two toric volumes that escape convectional mixing and are the likely sources of the two, Atlantic–Indian and Pacific, hot spot domains.

✍ L.-E. Ricou 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 197 KB

The global network of plate boundaries can be divided into two discrete subnetworks containing the spreading and subduction boundaries, respectively. We advocate that this division is a stable pattern that derives from consistency rules in rigid‐plate rotations. Subduction is distributed along a sin