Results 71 to 80 of about 1,324,189 (170)

Amapari Marker Band Metal‐Enrichments: Potential Mechanisms and Implications for Surface and Subsurface Water and Weathering in Gale Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract NASA's Curiosity rover is exploring a 5 km tall sedimentary mound that is hypothesized to record the transition from a warm and wet (phyllosilicate‐rich) to a cold and drier (sulfate‐rich) Mars. Evidence of magnesium sulfate‐bearing rock has shown that Curiosity has crossed through this phyllosilicate‐sulfate transition.
P. J. Gasda, E. S. Kite, L. M. Thompson, C. Mondro, W. E. Dietrich, C. M. Weitz, B. Tutolo, W. H. Farrand, E. Hausrath, A. Cowart, N. L. Lanza, K. W. Lewis, S. Gupta, A. Roberts, W. Goetz, H. E. Newsom, L. Crossey, J. Lightholder, C. Hardgrove, J. Schieber, S. P. Schwenzer, S. J. VanBommel, S. Schröder, C. D. O'Connell‐Cooper, D. Das, D. Rubin, W. Rapin, T. F. Bristow, E. Rampe, P. D. Archer Jr, C. Seeger, G. Caravaca, J. R. Johnson, S. Le Mouélic, J. A. Grant, J. Davis, J. Lasue, A. Yingst, A. B. Bryk, M. P. Lamb, W. W. Fischer, C. House, E. Dehouck, A. Essunfeld, R. Milliken, R. Sheppard, M. Minitti, D. Ming, S. Simpson, J. Frydenvang, R. M. E. Williams, R. Arvidson, R. Gellert, O. Gasnault, S. M. Clegg, D. Delapp, A. R. Vasavada, A. Fraeman   +57 more
wiley   +1 more source

Study on the evolution of wind-blown sand and gravel flow erosion resistance of aeolian sand concrete in cold regions and the coupling mechanism of freeze-thaw cycles: Laboratory tests and numerical simulation

Case Studies in Construction Materials
Concrete structures in the wind-sand environments of the Gobi Desert, Northwest China, face severe damage from the combined effects of freeze-thaw (F-T) cycles and wind-blown sand and gravel flow.
Kai Zhang, Haoliang Cheng, Xingxin Zhang, Yanhua Zhao, Bo Yang, Weichao Zhai, Lihai Tan   +6 more
doaj   +1 more source

Booming Sand Dunes [PDF]

, 2010
"Booming" sand dunes are able to produce low-frequency sound that resembles a pure note from a music instrument. The sound has a dominant audible frequency (70-105 Hz) and several higher harmonics and may be heard from far distances away.
Vriend, Nathalie Maria, Melany L. Hunt, Nathalie M. Vriend, Vriend, N. M., Hunt, ML   +4 more
core   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

Wind Tunnel Experimental Investigation Of Sand Velocity In Aeolian Sand Transport

, 2008
Sand velocity in aeolian sand transport was measured using the laser Doppler technique of PDPA (Phase Doppler Particle Analyzer) in a wind tunnel. The sand velocity profile, probability distribution of particle velocity, particle velocity fluctuation and
Kang LQ, 刘大有, Guo LJ, Kang, LQ (reprint author), Chinese Acad Sci, Inst Mech, Div Engn Sci, Beijing 100080, Peoples R China., Gu ZM   +4 more
core   +1 more source

Effect of river indus sand on concrete tensile strength [PDF]

, 2018
In the development of Pakistan construction industry, the utilization of River Indus sand in concrete as fine aggregate has expanded tremendously. The aim of this research is to study the effect of Indus River sand on the tensile strength of various ...
Hasni, Noor Afrina, Ahmed Vighio, Anees, Mohamad, Noridah, Ahmed Jhatial, Ashfaque, Abdul Samad, Abdul Aziz, Hashim, Shazana, Mohd Sabaruddin, Nurul Najihah, Shaikh, Muhammad Abu Bakar, Lakhiar, Muhammad Tahir, Rosley, Rozainita, Ku Hasnan, Ku Nur Husna Afifah   +10 more
core   +2 more sources

Influence mechanisms of aeolian sand and basalt fiber incorporation on the mechanical properties and microscopic pore structure of concrete

Scientific Reports
To elucidate the influence and underlying mechanisms of double-doped basalt fiber (BF) and aeolian sand (AS) on the mechanical properties and microscopic pore structure of concrete, concrete specimens with varying BF lengths, volume fractions, and AS ...
Shaojie Chen, Meng Zhang, Jianxi Ren, Lang Liu, Xiang Ren, Yugen Li, Lianju Liu, Shijia Zhou, Haibang Qin   +8 more
doaj   +1 more source

Aeolian Erosion Thresholds for Cohesive Sand

, 2022
International audienceMoisture is known to affect sand cohesion and therefore transport threshold and rate of aeolian sand transport. Aeolian sand transport has been widely documented for dry sand beds, but much more sparsely in the context of moist sand
J.‐B. Besnard, Valance, Alexandre, P. Dupont, Besnard, Jean-Baptiste, A. Valance, A. Ould El Moctar, Ould El Moctar, Ahmed, Dupont, Pascal   +7 more
core   +1 more source

Gradation curves of aeolian sand.

, 2018
Gradation curves of aeolian sand.
Wenbing Guo (5545571), Erhu Bai (5545577), Yi Tan (160353), Daming Yang (5545574)   +3 more
core   +1 more source

Recent advances in research on the aeolian geomorphology of China's Kumtagh Sand Sea [PDF]

, 2014
The Kumtagh Sand Sea in the hyper-arid region of northwestern China remained largely unexplored until the last decade. It deserves study due to its significance in understanding the evolution of the arid environments in northwestern China, and even ...
P. Lv, Z. Dong
core   +2 more sources