Results 11 to 20 of about 822 (141)
Spin Transition of Iron in Deep‐Mantle Ferromagnesite
Geophysical Monograph Series, Page 115-125., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jiachao Liu, Suyu Fu, Jung‐Fu Lin
wiley +3 more sources
Antarctic upper mantle rheology
Geological Society, London, Memoirs, 2021 Abstract The Antarctic mantle and lithosphere are known to have large lateral contrasts in seismic velocity and tectonic history. These contrasts suggest differences in the response timescale of mantle flow across the continent, similar to those documented between the northeastern and southwestern upper mantle of North America.
E. R. Ivins +4 more
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Eos, Transactions American Geophysical Union, 1971 There have been two main avenues of investigation of the rheology of the mantle: theoretical and laboratory studies of the mechanical behavior of solids and direct estimates obtained by comparing geologic observations with model calculations in which rheological parameters are the principal variables.
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Arrhenius rheology versus Frank‐Kamenetskii rheology—Implications for mantle dynamics [PDF]
Geochemistry, Geophysics, Geosystems, 2013 The viscosity of planetary mantle material is strongly temperature dependent. This dependence is described by an Arrhenius law. But for the realistic viscosity contrast that appears over the depth of the mantle, strong gradients in the upper thermal boundary layer occur. These strong gradients are not realizable in numerical models.
C. Stein, U. Hansen
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Multi‐scale dynamics and rheology of mantle flow with plates [PDF]
Journal of Geophysical Research: Solid Earth, 2012 Fundamental issues in our understanding of plate and mantle dynamics remain unresolved, including the rheology and state of stress of plates and slabs; the coupling between plates, slabs and mantle; and the flow around slabs. To address these questions, models of global mantle flow with plates are computed using adaptive finite elements, and compared ...
Alisic, Laura +4 more
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Sea‐level fluctuations due to subduction: The role of mantle rheology [PDF]
Geophysical Research Letters, 1997 By means of a stratified viscoelastic Earth model we study the effect of sinking slabs on the dynamic topography, the non‐hydrostatic geoid and the long‐term sea level variations. Sea level fluctuations due to subduction are found to be sensitive to the nature of the 670 km seismic discontinuity and to the rheological layering of the mantle.
C. PIROMALLO +3 more
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Fat Plumes May Reflect the Complex Rheology of the Lower Mantle [PDF]
Geophysical Research Letters, 2018 AbstractRecent tomographic imaging of the mantle below major hot spots shows slow seismic velocities extending down to the core‐mantle boundary, confirming the existence of mantle plumes. However, these plumes are much thicker than previously thought. Using new laboratory experiments and scaling laws, we show that thermal plumes developing in a visco ...
A. Davaille, Ph. Carrez, P. Cordier
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A General Workflow for Tangential Flow Filtration Perfusion Scale‐Up
Biotechnology and Bioengineering, EarlyView.ABSTRACT Tangential flow filtration (TFF) perfusion using hollow‐fiber modules offers substantial advantages over other mammalian cell retention technologies. Recently, increased awareness of Starling flow has helped to enhance filtration performance to similar, or even higher levels compared to alternative technologies.
Patrick Romann +20 more
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
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Journal of Surfactants and Detergents, EarlyView.ABSTRACT Striae distensae are common dermal lesions that negatively affect skin appearance, and topical management remains limited by challenges related to skin deposition and residence time. Here, we developed transparent surfactant‐based isotropic systems for the topical co‐delivery of ascorbic acid (AA), retinoic acid (RA), and lavender essential ...
Claudiane Ayres Prochno +8 more
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