Results 101 to 110 of about 24,714 (224)

PROBLEMS OF NUMERICAL MODELING OF LARGE-SCALE MANTLE CONVECTION IN THE SUBDUCTION ZONE

Геодинамика и тектонофизика
The article provides a review of modern models of large-scale mantle convection in the zone of a heavy cold oceanic plate (slab) subduction into the upper mantle.
A. N. Chetyrbotsky
doaj   +1 more source

Reproducing past subduction and mantle flow using high-resolution global convection models

Earth and Planetary Physics, 2018
Plate subduction drives both the internal convection and the surface geology of the solid Earth. Despite the rapid increase of computational power, it remains challenging for geodynamic models to reproduce the history of Earth-like subduction and ...
JiaShun Hu, LiJun Liu, Quan Zhou
doaj   +1 more source

Davemaoite Elasticity Reveals Slab‐Induced Heterogeneity in the Mantle Transition Zone

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The observed 2%–7% low‐shear velocity (VS) anomalies near the subducted slab at the bottom mantle transition zone (MTZ) indicate strong lateral heterogeneity, which is commonly attributed to subducted oceanic crust. However, davemaoite, a major constituent of the subducted oceanic crust, has been poorly constrained in its elasticity, hindering
Yingxin Yu, Xinyue Zhang, Dongzhou Zhang, Luo Li, Zhu Mao, Ningyu Sun, Denglei Wang, Jing Li, Chaoshuai Zhao, Cheng Qian, Yingzhan Wei, Xinyang Li, Yuzhu Wang, Takayuki Ishii   +13 more
wiley   +1 more source

Evidence from satellite altimetry for small-scale convection in the mantle [PDF]

Small scale convection can be defined as that part of the mantle circulation in which upwellings and downwellings can occur beneath the lithosphere within the interiors of plates, in contrast to the large scale flow associated with plate motions where ...
Haxby, W. F., Mckenzie, D. P., Parsons, B., Watts, A. B., Weissel, J. K.   +4 more
core   +1 more source

A Seismically Active Shear Zone in the Uppermost Mantle Beneath the Canadian Rockies

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Continental mantle earthquakes are uncommon but hold important clues for understanding lithospheric rheology. Few of these earthquakes (<10) have been documented in western North America, though it is likely more exist owing to difficulties in resolving focal depth for small earthquakes.
Sean J. Hutchings, Keith D. Koper, Guanning Pang   +2 more
wiley   +1 more source

Coupled Climate‐Ice‐Sheet Simulations Reveal Novel Teleconnection Between Northern Hemisphere Ice Sheets and the Antarctic Ice Sheet

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Coupled climate‐ice‐sheet modeling is still in its developing stage, and feedback processes between ice sheets and climate are still not yet fully understood. Here, we use simulations with a coupled climate‐ice‐sheet model to investigate teleconnections between Northern Hemispheric ice sheets and the Antarctic ice sheet (AIS) without direct ...
Pierre Testorf, Clemens Schannwell, Marie‐Luise Kapsch, Uwe Mikolajewicz   +3 more
wiley   +1 more source

MODELING OF MOVING DEFORMABLE CONTINENTS BY ACTIVE TRACERS: CLOSING AND OPENING OF OCEANS, RECIRCULATION OF OCEANIC CRUST

Геодинамика и тектонофизика, 2018
The evolution of the ‘mantle – moving deformable continents’ system has been studied by numerical experiments. The continents move self-consistently with the mantle flows of thermo-compositional convection.
A. M. Bobrov, A. A. Baranov
doaj   +1 more source

Core‐mantle boundary topography and whole‐mantle convection

Geophysical Research Letters, 1989
The seismically observed topography on the core‐mantle boundary (CMB) and the velocities of the surface tectonic plates together constitute important observational constraints on viscous flow models of the Earth's mantle. We show here that the CMB deflections inferred by Morelli and Dziewonski (1987) may be explained in terms of a simple model of whole‐
Alessandro M. Forte, W. Richard Peltier
openaire   +1 more source

Mantle transition zone thickness beneath Ross Island, the Transantarctic Mountains, and East Antarctica

Geophysical Research Letters, 2008
The thickness of the mantle transition zone beneath Ross Island, and parts of the Transantarctic Mountains and East Antarctic Craton has been mapped using data from the 2000–2003 Transantarctic Mountain Seismic Experiment to determine if, as indicated by
Angela Marie Reusch, Andrew A. Nyblade, Margaret H. Benoit, Douglas A. Wiens, Sridhar Anandakrishnan, Donald Voigt, Patrick J. Shore   +6 more
doaj   +1 more source

Towards Realistic Progenitors of Core-Collapse Supernovae

, 2011
Two-dimensional (2D) hydrodynamical simulations of progenitor evolution of a 23 solar mass star, close to core collapse (about 1 hour, in 1D), with simultaneously active C, Ne, O, and Si burning shells, are presented and contrasted to existing 1D models (
Arnett, Arnett, Arnett, Arnett, Arnett, Arnett, Asida, Bazàn, Brown, Browning, Bruen, Brun, Burrows, Böhm-Vitense, Casey Meakin, Clayton, Cox, Damköhler, Dearborn, Deupree, Deupree, Fryer, Fryer, Fryer, Goldreich, Hoyle, Hoyle, Hughes, Kalogera, Kuhlen, Landau, Ledoux, Lindl, Meakin, Meakin, Meakin, Meakin, Murphy, Nonaka, Nordlund, Porter, Sedov, Smith, Stone, Timmes, Timmes, Turner, Unno, W. David Arnett, Wongwathanarat, Woodward, Young, Zahn   +52 more
core   +1 more source