Results 81 to 90 of about 5,696 (230)

Convection in fluid and porous media [PDF]

, 2003
The subject of convection in fluid and porous media is investigated. Particular attention is paid to penetrative convection. The first two chapters are devoted to penetrative convection when fluid overlies and saturates a porous medium.
Carr, Magda
core  

Spatial distribution and possible origin of the high velocity lower crust in the northern margin of the South China Sea

Geoscience Letters
High-velocity lower crust (HVLC) near the continent–ocean transition zone is significant for recording magmatic activity and early rifting history and is likely to be sourced from various types of magma supplies, including passive decompression melting ...
Jih-Hsin Chang, Zih-Lin Hong, Arif Mirza, Liang-Fu Lin, Hsien-Hsiang Hsieh, Justin Yen-Ting Ko, Sung-Ping Chang, Chin-Yeh Chen, Ting-Yi Liu   +8 more
doaj   +1 more source

Geophysical Investigation of Geothermal Potential in Southern Thailand: Insights From GGMplus Gravity

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Southern Thailand hosts numerous low‐ to medium‐enthalpy geothermal manifestations in a non‐volcanic setting. This study investigates the geothermal potential of the region through the integration of satellite‐derived gravity data and geological observations.
T. Phiranram, P. Chenrai, S. Phantuwongraj, C. Kitpracha   +3 more
wiley   +1 more source

Characterizing the Complexity of Subduction Zone Flow With an Ensemble of Multiscale Global Convection Models

Geochemistry, Geophysics, Geosystems
Subduction zones are fundamental features of Earth's mantle convection and plate tectonics, but mantle flow and pressure around slabs are poorly understood because of the lack of direct observational constraints on subsurface flow.
Samuel L. Goldberg, Adam F. Holt
doaj   +1 more source

Solid-state mantle convection coupled with a crystallising basal magma ocean

Comptes Rendus. Géoscience
Fractional crystallisation of a basal magma ocean (BMO) has been proposed to explain the formation of large scale compositional variations in the mantle and the persistence of partially molten patches in the lowermost mantle. We present a complete set of
Labrosse, Stéphane, Morison, Adrien, Tackley, Paul James   +2 more
doaj   +1 more source

Effects of the Compositional Viscosity Ratio on the Long‐Term Evolution of Thermochemical Reservoirs in the Deep Mantle

Geophysical Research Letters, 2019
Numerical experiments of thermochemical mantle convection in 2‐D spherical annulus geometry are performed to investigate the effects of compositional viscosity ratio (ΔηC) on the long‐term evolution of reservoirs of dense, primordial material in the ...
Yang Li, Frédéric Deschamps, Jianfeng Yang, Lin Chen, Liang Zhao, Paul J. Tackley   +5 more
doaj   +1 more source

Viscous and Magnetic Boundary Layers at the Top of the Core in Geodynamo Models

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract We investigate the boundary layer at the top of the Earth's core, which acts as a filter between the interior of the core and its surface, where models built from geomagnetic data are derived. We rely on no‐slip convective geodynamo numerical simulations calculated for a low viscosity fluid, with Ekman numbers E=10−6 $E=1{0}^{-6}$ and E=10−7 ...
D. Jault, P. Personnettaz, N. Gillet, T. Lepage, N. Schaeffer   +4 more
wiley   +1 more source

Impacts of high viscosity variation and internal heating on mantle convection in different aspect ratio cells

Heliyon
This study examines the Rayleigh-Bénard convection model with free slip boundary conditions appropriate for the Earth's mantle in narrow and elongated cells with aspect ratios of 1:2 and 2:1, respectively.
Tania S. Khaleque, Md. Shafiul A. Khan, Romana Yesmin   +2 more
doaj   +1 more source

Evolving mantle convection from bottom up to top down. [PDF]

Innovation (Camb), 2022
Mitchell RN, Brown M, Gernon TM, Spencer CJ.   +3 more
europepmc   +1 more source

Iron‐Silicate Segregation Within a Convecting Magma Ocean via the Multiphase Thermal Lattice Boltzmann Method: Implication on Iron‐Silicate Mixing

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract During the late stages of planetary accretion, large differentiated impactors interacted with the Earth's magma ocean, producing clouds of iron droplets that sank and mixed with silicates. Using a novel fluid‐dynamic approach combining the Thermal and Rothman‐Keller multiphase Lattice Boltzmann Methods, we modeled the segregation of impactor ...
L. Honarbakhsh, G. Morra, P. Mora, C. R. M. Jackson   +3 more
wiley   +1 more source