Variation in bridgmanite grain size accounts for the mid-mantle viscosity jump

H Fei, MD Ballmer, U Faul, N Walte, W Cao, T Katsura - Nature, 2023 - nature.com
A viscosity jump of one to two orders of magnitude in the lower mantle of Earth at 800–1,200-
km depth is inferred from geoid inversions and slab-subducting speeds. This jump is known …

Changes in the direct climate effect of black carbon aerosols in East Asia under the “dual carbon” goal of China

P Gao, Y Gao, Y Zhou, H Cao, Y Hu, S Li… - Journal of …, 2024 - Wiley Online Library
In the context of China's “dual carbon” goal, emissions of air pollutants are expected to
significantly decrease in the future. Thus, the direct climate effects of black carbon (BC) …

Quartz rheology constrained from constant-load experiments: Consequences for the strength of the continental crust

S Ghosh, H Stünitz, H Raimbourg… - Earth and Planetary …, 2022 - Elsevier
The mechanical properties of quartz are fundamental to control the plastic behaviour of the
continental crust. Our understanding of quartz rheology is still limited in the following …

[HTML][HTML] Evolution and customisation of the RegCM model for urban climate studies: Addressing multifaceted challenges and advancing climate science

N Yasmin, S Ullah, SG Al-Ghamdi - Geography and Sustainability, 2024 - Elsevier
Abstract The Regional Climate Model (RegCM) proves valuable for climate analysis and has
been applied to a wide range of climate change aspects and other environmental issues at a …

Sintering and deformation properties of forsterite+ diopside aggregates in an electrical field

M Tasaka, K Maeda, K Nambu, H Motomura… - Physics of the Earth and …, 2023 - Elsevier
A new technique called “flash sintering” has been proposed in the field of materials science.
When a compact powder of oxide material is sintered in an electrical field, densification …

Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007–2020

Y Hu, B Zhuang, Y Zhou, Y Gao, P Gao, T Wang… - Atmospheric …, 2024 - Elsevier
East Asia (EA) has always been a highly concern region for human-induced climate change.
In this study, a well-developed regional model RegCM4 is employed to investigate the …

A common diffusional mechanism for creep and grain growth in polymineralic rocks: Experiments

A Okamoto, T Hiraga - Journal of Geophysical Research: Solid …, 2022 - Wiley Online Library
We conducted uniaxial compression and grain growth experiments on fine‐grained forsterite
(Mg2SiO4)+ 10 vol% periclase (MgO) aggregates. This aggregate is a unique polymineralic …

Importance of grain boundary processes for plasticity in the quartz-dominated crust: Implications for flow laws

S Ghosh, H Stünitz, H Raimbourg, J Précigout… - Earth and Planetary …, 2024 - Elsevier
When H 2 O is present along grain boundaries, the deformation processes responsible for
plasticity in silicate mineral aggregates can deviate from what may be conventionally …

Dislocation creep of diopside aggregates under unsaturated hydrous conditions at a confining pressure of 300 MPa

J Li, M Song, H Wang, G Zhang, S Mei… - Journal of …, 2024 - Wiley Online Library
To understand the dislocation creep behavior of clinopyroxene in the upper mantle, hot‐
pressed diopside aggregates without predrying treatment were triaxially deformed under …

Reduced Viscosity of Mg2GeO4 with Minor MgGeO3 between 1000 and 1150 °C Suggests Solid-State Lubrication at the Lithosphere–Asthenosphere Boundary

TP Ferrand, D Deldicque - Minerals, 2021 - mdpi.com
Tectonic plates are thought to move above the asthenosphere due to the presence of
accumulated melts or volatiles that result in a low-viscosity layer, known as lithosphere …