Results 11 to 20 of about 8,008,633 (316)
The impact cratering record of Fennoscandia [PDF]
Earth, Moon, and Planets, 1996 The current database of craterform structures in Fennoscandia contains 22 structures of impact origin and about fifty other structures which lack sufficient evidence for impact. The discovery rate of new structures has been one or two per year during the past ten years.
L. J. Pesonen
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Dynamics of shallow impact cratering [PDF]
Physical Review E, 2005 We present data for the time-dependence of wooden spheres penetrating into a loose non-cohesive packing of glass beads. The stopping time is a factor of three longer than the time $d/v_\circ$ needed to travel the total penetration distance $d$ at the impact speed $v_\circ$. The acceleration decreases monotonically throughout the impact.
M. A. Ambroso +2 more
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Meteoritics and Planetary Science, 2021 The number of newly discovered and confirmed impact structures on earth is growing continuously. In this review paper, the main attributes of 198 confirmed impact structures and 10 further structures, for which final confirmation based on the ...
T. Kenkmann
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Rock and Soil Mechanics, 2022 Particle impact, a new drilling technology, has been applied in drilling and gas and oil exploitation. Also, it is considerably promising as an assisting rock-breaking method for the excavation of tunnels in extremely hard rocks.
JU Ming-he +5 more
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Polygonal impact craters on Ganymede
Meteoritics & Planetary Science, 2023 AbstractPolygonal impact craters (PICs) are unique geological features observed on various planetary bodies and constitute a small percentage of the impact crater population. This study focuses on PICs on Ganymede, where no such craters have been investigated so far. Here we present the distribution of PICs, examine their morphological characteristics,
Namitha Rose Baby +3 more
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Microbial Life in Impact Craters [PDF]
Current Issues in Molecular Biology, 2020 Asteroid and comet impacts are known to have caused profound disruption to multicellular life, yet their influence on habitats for microorganisms, which comprise the majority of Earth's biomass, is less well understood. Of particular interest are geological changes in the target lithology at and near the point of impact that can persist for billions of
Cockell, Charles S. +4 more
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Moon Impact Crater Detection Using Nested Attention Mechanism Based UNet++
IEEE Access, 2021 Impact craters are the most prominent topographic feature on the lunar surface, which will play a significant role in constructing lunar bases and lunar surface activities in the future.
Yutong Jia, Lei Liu, Chenyang Zhang
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, 2001 Approximately 160 known terrestrial impact structures are distributed worldwide, with concentrations in geologically stable areas. The basic types are simple' craters, up to 4 km in diameter, with uplifted and overturned rimrocks surrounding a bowl-shaped depression, and complex' structures, generally over 3 km in diameter, with a central uplifted ...
R. A. F. Grieve
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Remote Sensing, 2021 Impact craters are the most prominent features on the surface of the Moon, Mars, and Mercury. They play an essential role in constructing lunar bases, the dating of Mars and Mercury, and the surface exploration of other celestial bodies.
Yutong Jia +7 more
semanticscholar +1 more source
Impact crater degradation, Oxia Planum, Mars
Journal of Maps, 2021 The main goal of the European Space Agency (ESA) and Roscosmos ExoMars rover mission is to collect samples from the near-subsurface of Mars. The rover will look for any physical or chemical evidence of ancient life in the near subsurface.
Amelie L. Roberts +2 more
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