Results 71 to 80 of about 2,366,156 (316)

Hydrous upwelling across the mantle transition zone beneath the Afar Triple Junction [PDF]

, 2015
The mechanisms that drive the upwelling of chemical heterogeneity from the lower to upper mantle (e.g., thermal versus compositional buoyancy) are key to our understanding of whole mantle con- vective processes. We address these issues through a receiver
A. Ayele, Angus, B. Goitom, Baker, Bastow, Bastow, Beier, Benoit, Benoit, Bercovici, Chang, Cornwell, Crotwell, D. A. Thompson, D. Keir, Deuss, Duncan, Ebinger, Ferguson, Flanagan, Frost, Férot, G. R. Helffrich, G. W. Stuart, Gao, Ghosh, Gu, Hammond, Hammond, Hammond, Hansen, Hansen, Helffrich, Hirschmann, Huckfeldt, Huerta, Inoue, Ito, J. O. S. Hammond, J.-M. Kendall, Julià, Kendall, Kennett, Lawrence, Ligorria, McFadden, Meshesha, Montelli, Morgan, Nichols, Niu, Niu, Nyblade, Nyblade, Nyblade, Olson, Owens, Pearson, Pik, Revenaugh, Rooney, Rychert, Shen, Simmons, Smyth, Stixrude, Styles, Tackley, Tauzin, Tauzin, Tenner, Thompson, VanDecar, Vinnik, Weidner, Wilson, Wolfe, Wolfe   +77 more
core   +5 more sources

Early and Progressive Spinal Cord Atrophy in Spinocerebellar Ataxia Type 1

Movement Disorders, EarlyView.
Abstract Background Spinocerebellar ataxia type 1 (SCA1) is a rare, autosomal dominant neurodegenerative disorder characterized by progressive cerebellar and brainstem degeneration. Previous studies have shown that spinal cord atrophy is also a key aspect of SCA1 neuropathology.
Colette J.M. Reniers, Teije H. van Prooije, Kirsten C.J. Kapteijns, Jack J.A. van Asten, Caterina Mariotti, Lidia Sarro, Anna Nigri, Marina Grisoli, Giulia Coarelli, Alexandra Durr, Tom Scheenen, Bart van de Warrenburg   +11 more
wiley   +1 more source

Crustal structure and apparent tectonic underplating from receiver function analysis in South Island, New Zealand [PDF]

, 2008
We utilize seismic converted phases on more than 700 receiver functions calculated for 42 stations in the South Island, New Zealand, to infer crustal and uppermost mantle structure.
Clayton, Robert W., Spasojević, Sonja
core  

Primary carbonatite melt from deeply subducted oceanic crust [PDF]

, 2008
Partial melting in the Earth's mantle plays an important part in generating the geochemical and isotopic diversity observed in volcanic rocks at the surface.
A Kubo, A Zindler, A. R. Lennie, AW Hofmann, B Harte, B Harte, C. B. Smith, CE Manning, DA Ionov, E Hauri, F Kaminsky, FE Brenker, FE Brenker, G. Gudfinnsson, G. P. Bulanova, GP Bulanova, J. D. Blundy, JM Brenan, K Hirose, K Hirose, K Hirose, L. Gobbo, L. S. Armstrong, LN Kogarko, M Arima, M Coltorti, M. J. Walter, MJ Walter, MJ Walter, O. T. Lord, OG Safonov, PC Hayman, R Dasgupta, R Kessel, R Tappert, RE Harmer, S. Keshav, S. M. Clark, SE Haggerty, T Irifune, T Stachel, T Stachel, T Stachel, WF McDonough   +43 more
core   +2 more sources

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

A subduction influence on ocean ridge basalts outside the Pacific subduction shield

Nature Communications, 2021
We discover a pervasive subduction influence in the Arctic, Atlantic and Indian mantle, which is nearly absent in the Pacific mantle. Such a hemispheric-scale upper mantle heterogeneity reflects the control of a “subduction shield” that has surrounded ...
A. Y. Yang, C. H. Langmuir, Y. Cai, P. Michael, S. L. Goldstein, Z. Chen   +5 more
doaj   +1 more source

Geomorphic Effects and Habitat Impacts of Large Wood at Restoration Sites in New England

River Research and Applications, EarlyView.
ABSTRACT Large wood (used interchangeably with the term “instream wood”), which refers to trees, logs and other wood within a channel, is beneficial to river ecosystems and is being used more frequently as a component of river restoration projects. We identified metrics to evaluate the effectiveness of large wood to promote ecological and geomorphic ...
Audrey J. Turcotte, Noah P. Snyder, Mathias J. Collins   +2 more
wiley   +1 more source

ECO: A new reference model of dry olivine electrical conductivity

Solid Earth Sciences
Electrically Conductive Olivine, ECO, is presented as a new reference model for the electrical conductivity of dry olivine. The model takes into account the prevailing redox state, temperature and pressure in the upper mantle, as well as their effects on
Xiaozhi Yang
doaj   +1 more source

Robust Seismic Images of the Hawaiian Plume

Geophysical Research Letters, 2022
To image the Hawaiian plume and the plume‐lithosphere interaction, we determine a robust 3‐D shear‐wave velocity (Vs) model of the upper mantle and the mantle transition zone (MTZ) beneath Hawaii by jointly inverting teleseismic S‐wave arrival times ...
Chuanwei Ye, Xin Liu, Dapeng Zhao, Shujuan Zhao   +3 more
doaj   +1 more source

Gas check prevention during calendering of poly(vinyl chloride) films using poly(caprolactone)‐based additives

Journal of Vinyl and Additive Technology, Volume 31, Issue 2, Page 441-452, March 2025.
Three poly(caprolactone) (PCL)‐based additives of differing molecular weights were used as a secondary plasticizer to prevent gas checks in PVC films produced through calendering. Results showed that chemical and physicochemical properties influence the prevention or reduction of gas checks, unlike rheological properties including complex viscosity and
Luis F. Alvarez, Kushal Panchal, Richard L. Leask, Milan Maric, Jim A. Nicell   +4 more
wiley   +1 more source