Results 31 to 40 of about 635 (114)

Density Structure of the Von Kármán Crater in the Northwestern South Pole-Aitken Basin: Initial Subsurface Interpretation of the Chang’E-4 Landing Site Region

open access: yesSensors, 2019
The Von Kármán Crater, within the South Pole-Aitken (SPA) Basin, is the landing site of China’s Chang’E-4 mission. To complement the in situ exploration mission and provide initial subsurface interpretation, we applied a 3D density ...
Chikondi Chisenga   +4 more
doaj   +1 more source

Application of steel fiber concrete in small box girder under vehicle explosion load

open access: yesJournal of Engineered Fibers and Fabrics, 2023
In recent years, the exceptional performance of steel fiber-reinforced concrete in blast and impact resistance has garnered widespread recognition, sparking considerable interest in its practical application in small box girders. To this end, nine groups
YuJie Wang   +3 more
doaj   +1 more source

On the importance of self-secondaries

open access: yesGeoscience Letters, 2018
Self-secondaries are secondary craters that are formed on both the continuous ejecta deposits and interior of the parent crater. The possible existence of self-secondaries was proposed in the late 1960s, but their identity, formation mechanism, and ...
Zhiyong Xiao
doaj   +1 more source

Impact Induced Oxidation and Its Implications for Early Mars Climate

open access: yesGeophysical Research Letters, 2023
H2 in a CO2 atmosphere may serve as a potential solution to the early Mars climate paradox, but its unknown sources cast doubts on the proposed mechanism. Impact cratering is an energetic process that may modify the surface redox budget.
Lu Pan, Zhengbin Deng, Martin Bizzarro
doaj   +1 more source

A Drone‐Based Thermophysical Investigation of Barringer Meteorite Crater Ejecta

open access: yesEarth and Space Science
Impact cratering processes are ubiquitous throughout our solar system, and the distribution and modification of impact ejecta are sensitive to variable environmental and geologic surface conditions.
Cole A. Nypaver   +3 more
doaj   +1 more source

V-type Asteroids as the Origin of Mesosiderites

open access: yesThe Planetary Science Journal, 2023
We present the results of a campaign of hypervelocity impact experiments on natural mesosiderite targets, using representative main asteroid belt impact speeds. The objective is to document further the surface evolution of iron-rich asteroids.
Guy Libourel   +5 more
doaj   +1 more source

Mare versus highland lunar impact flash light curve dichotomy

open access: yesAstronomy & Astrophysics
We performed a comprehensive analysis of lunar impact flash (LIF) light curve shapes and their dependence on the lunar terrain, using the large sample of LIFs detected by NELIOTA over the last 9 years. We classified 124 multi-frame light curves into mare,
Athanasopoulos D.   +7 more
doaj   +1 more source

Theoretical and Numerical Study on a Scale Model Test of Planetary Cratering Impact

open access: yesAerospace
Our investigation delves into the scaling law governing planetary cratering impacts. We meticulously analyze the interplay between dimensionless parameters driving crater growth and the morphological transition of craters and construct the scaling ...
He Lv, Qiguang He, Xiaowei Chen
doaj   +1 more source

Semi-automated crater depth measurements

open access: yesMethodsX, 2019
Impact cratering is a major process driving planetary landscape evolution. Statistics of craters spatial density is extensively used to date planetary surfaces.
Sylvain Breton   +5 more
doaj   +1 more source

Impact Rates in the Outer Solar System

open access: yesThe Planetary Science Journal, 2023
Previous studies of cometary impacts in the outer solar system used the spatial distribution of ecliptic comets (ECs) from dynamical models that assumed ECs began on low-inclination orbits (≲5°) in the Kuiper Belt.
David Nesvorný   +4 more
doaj   +1 more source

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