Results 11 to 20 of about 635 (114)
Pluto's Antipodal Terrains Imply a Thick Subsurface Ocean and Hydrated Core
Geophysical Research Letters, 2021 Recent analysis of New Horizons data revealed an ∼1,000‐km‐diameter region of large‐scale lineations antipodal to Sputnik Planitia, the 1,200 × 2,000 km elliptical impact basin on Pluto's anti‐Charon hemisphere.
C. Adeene Denton +5 more
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Frontiers in Earth Science, 2022 This study investigates the dynamics of a spherical projectile impact onto a granular bed via numerical simulations by discrete element method (DEM). The granular bed is modeled as an assembly of polydisperse spherical particles and the projectile is ...
Weigang Shen +5 more
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Formation mechanism of the Lidang circular structure in the Guangxi Province
Earth and Planetary Physics, 2019 The Lidang circular structure in the center of the Guangxi Province is about 8 km in diameter. This structure appears as an abnormal shallow depression that has disturbed the rather harmonic regional joint systems.
Pan Yan +4 more
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Numerical Simulations of the Apollo S‐IVB Artificial Impacts on the Moon
Earth and Space Science, 2021 The third stage of the Saturn IV rocket used in the five Apollo missions made craters on the Moon ∼30 m in diameter. Their initial impact conditions were known, so they can be considered controlled impacts.
A. Rajšić +8 more
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Analytical Model Formulation of Steel Plate Reinforced Concrete Walls against Hard Projectile Impact
Applied Sciences, 2022 Steel plate reinforced concrete (SC) walls can effectively resist projectile impact by preventing the rear concrete fragments flying away, thus attracting much attention in defence technology.
Bo Pu +3 more
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The self‐secondary crater population of the Hokusai crater on Mercury
Geophysical Research Letters, 2016 Whether or not self‐secondaries dominate small crater populations on continuous ejecta deposits and floors of fresh impact craters has long been a controversy. This issue potentially affects the age determination technique using crater statistics.
Zhiyong Xiao +2 more
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Nature Communications, 2020 The ~70 km-diameter Yarrabubba impact structure in Western Australia has previously been regarded as among Earth’s oldest meteorite craters, but has hitherto lacked absolute age constraints. Here, the authors determine a precise impact age of 2229 ± 5 Ma,
Timmons M. Erickson +4 more
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Magnetite in Muong Nong‐Type Australasian Tektites From South China
Geochemistry, Geophysics, Geosystems, 2023 South China belongs to the northern geographic branch of the Australasian strewn field (AASF) of tektites and microtektites, and this area is assumed to be part of the uprange region of the putative impactor trajectory that formed the yet undiscovered ...
Qing Pan +4 more
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Atmospheric effects on high-velocity impact cratering in porous sandstones [PDF]
EPJ Web of ConferencesGranular geomaterials feature varied porosity and may possess pore fluids. The interactions between grains, pores, and pore fluids affect the impact dynamics in the material such as the cratering efficiency, ejecta kinetics and crater morphology. In this
Singh Shachi +3 more
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Applied Sciences, 2020 Impact cratering experiments were performed on semi-infinite concrete targets with 7 mm-diameter 40CrNiMo steel long-rod projectiles at impact velocities ranging from 2117 m/s to 3086 m/s by using a two-stage combustion light-gas gun.
Yangyu Lu +6 more
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