ANALYSIS OF SHAPE CHARACTERISTICS LUNAR CRATER BY OBSERVATION AND SPH SIMULATION
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- TORYUDANI Keiichi
- 筑波大学 システム情報工学研究科
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- MATSUSHIMA Takashi
- 筑波大学 システム情報系
Bibliographic Information
- Other Title
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- 観測とSPH解析による月面クレーター形状特性の検討
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Description
Dynamic mechanism of crater formation process caused by meteorite impacts plays an important role in the evolution of topography and geology on planet surface. The present study surveyed the morphological features and rock abundance of 136 relatively fresh impact craters on the moon by using Lunar Reconnaissance Orbiter Camera (LROC) of NASA and compared with 2-D Smoothed Particle Hydrodynamics (SPH) simulations. The simulation results quantitatively reproduced the diameter-depth relation and central peak formation. Moreover, it turned out that the material forming the central peak comes from several kilometers deep underground because of the circular slip mechanism commonly observed in slope failure analysis in geomechanics. It was also found that the large-scale circular slip modifies the morphological trend of crater which causes the bilinear relation of diameter-depth curve in log-log plot.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))
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Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 73 (2), I_527-I_534, 2017
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205350019584
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- NII Article ID
- 130006329886
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- NII Book ID
- AA12693023
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- ISSN
- 21854661
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- HANDLE
- 2241/00159633
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed