Results 11 to 20 of about 12,699 (236)

NaciaLuo/lunar-oblique-impact-ejecta: First release

open access: yes, 2022
This repository includes ejecta launch velocities, launch angles, and ejecta deposit patterns from iSALE-3D simulations. Please note the iSALE-3D code is distributed on a case-by-case basis in the impact community, restricted to non-commercial ...
Xizi Luo
core   +1 more source

Groove formation on Phobos from reimpacting orbital ejecta of the Stickney crater

open access: yesEarth and Planetary Physics, 2022
Numerous linear grooves have long been recognized as covering the surface of Phobos, but the mechanisms of their formation are still unclear. One possible mechanism is related to the largest crater on Phobos, the Stickney crater, whose impact ejecta may ...
XiangYu Xi, Min Ding, MengHua Zhu
doaj   +1 more source

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+2 more sources

Dynamic simulations of projectile penetration into granular medium

open access: yesMechanical Engineering Journal, 2014
Dynamic FEM and DEM simulations are carried out to investigate dynamic penetration of a projectile into a target of granular medium. Spatial distribution and time dependence of ejecta are clarified together with their trajectories in medium.
Kinya OGAWA   +2 more
doaj   +1 more source

Fine debris flows formed by the Orientale basin

open access: yesEarth and Planetary Physics, 2020
The prototype for investigations of formation mechanisms and related geological effects of large impact basins on planetary bodies has been the Orientale basin on the Moon.
YuZhen Cai   +3 more
doaj   +1 more source

Comparison of Topographic Roughness of Layered Deposits on Mars

open access: yesRemote Sensing, 2023
Impact craters with layered ejecta deposits are widespread on Mars. Prevailing views suggest that such ejecta were formed due to the involvement of target water and/or water ice in the impact excavation and/or the post-deposition movement of the impact ...
Wei Cao   +4 more
doaj   +1 more source

The ionization of novae ejecta [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
AbstractNovae ejecta pass through four distinct phases of evolution of the emission-line spectrum, caused by different ionization characteristics of the shell. These include a neutral (I), an auroral (II), a coronal (III), and a nebular (IV) phase. Photoionization from the contracting photosphere of the hot white dwarf is the source of the ionization ...
openaire   +1 more source

Forbush Decrease Characteristics in a Magnetic Cloud

open access: yesSpace Weather, 2020
Based on the new mechanism, the Forbush decrease characteristics are calculated for eight magnetic cloud types. It is shown that the Forbush decrease amplitude does not depend on the magnetic cloud type, while the anisotropy strongly does.
A. S. Petukhova   +2 more
doaj   +1 more source

The role of neutrinos in explosive nucleosynthesis in core collapse supernova models with neutrino transport [PDF]

open access: yes, 2007
The problem of core collapse supernova explosions is long standing and attempts to understand the mechanism have been ongoing. On one hand, a full understanding of the underlying mechanism is still pending.
Fröhlich, Carla
core   +1 more source

Hypervelocity impacts on thin brittle targets: experimental data and SPH simulations [PDF]

open access: yes, 2005
The meteoroids and debris environment play an important role in the reduction of spacecraft life time. Ejecta or secondary debris, are produced when a debris or a meteoroid impact a spacecraft surface.
Chevalier, Jean-Marc   +4 more
core   +1 more source

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