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impact crater recognition methods:A review

Science China Earth Sciences 2024年第6期67卷 1719-1742页

作者： Dong CHEN Fan HU Liqiang ZHANG Yunzhao WU Jianli DU Jiju PEETHAMBARAN College of Civil Engineering Nanjing Forestry UniversityNanjing 210037China Department of Geography State Key Laboratory of Remote Sensing ScienceFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China Key Laboratory of Space Object and Debris Observation Chinese Academy of SciencesNanjing 210023China Department of Mathematics and Computing Science Saint Mary’s UniversityHalifaxNS B3H 3C3Canada

impact craters are formed due to the high-speed collisions between small to medium-sized celestial bodies.impact is the most significant driving force in the evolution of celestial bodies,and the impact craters provide crucial insights into the formation,evolution,and impact history of celestial bodies.In this paper,we present a detailed review of the characteristics of impact craters,impact crater remote sensing data,recognition algorithms,and applications related to impact craters.We first provide a detailed description of the geometric texture,illumination,and morphology characteristics observed in remote sensing data of craters.Then we summarize the remote sensing data and cataloging databases for the four terrestrial planets(i.e.,the Moon,Mars,Mercury,and Venus),as well as the impact craters on Ceres.Subsequently,we study the advancement achieved in the traditional methods,machine learning methods,and deep learning methods applied to the classification,segmentation,and recognition of impact craters.Furthermore,based on the analysis results,we discuss the existing challenges in impact crater recognition and suggest some solutions.Finally,we explore the implementation of impact crater detection algorithms and provide a forward-looking perspective.

关键词： Terrestrial planets Deep space exploration impact crater impact crater recognition Deep learning

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A rocky hill on the continuous ejecta of Ziwei crater revealed by the Chang’e-3 mission

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Earth and Planetary Physics 2020年第2期4卷 105-110页

作者： ChunYu Ding YuZhen Cai ZhiYong Xiao Yan Su School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai Guangdong 519082China State Key Laboratory of Lunar and Planetary Sciences Space Science InstituteMacao University of Science and TechnologyMacao 999078China Chinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230026China Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China

The Chinese Chang’e-3 mission landed close to the eastern rim of the ~450 m diameter Ziwei crater. Regional stratigraphy of the landing site and impact excavation model suggest that the bulk continuous ejecta deposits of the Ziwei crater are composed by Erathothenian-aged mare basalts. Along the traverse of the Yutu rover, the western segment features a gentle topographic uplift(~0.5 m high over ~4 m), which is spatially connected with the structurally-uplifted crater rim. Assuming that this broad topographic uplift has physical properties discontinuous with materials below, we use data returned by the high-frequency lunar penetrating radar onboard the Yutu rover to estimate the possible range of relative permittivity for this topographic uplift. Only when the relative permittivity is ~9 is the observed radar reflection consistent with the observed topography, suggesting that the topographic uplift is composed of basaltic blocks that were excavated by the Ziwei crater. This result is consistent both with the impact excavation model that predicts deeper basaltic materials being deposited closer to the crater rim, and with observation of numerous half-buried boulders on the surface of this hill. We note that this study is the first to use topography and radargram data to estimate the relative permittivity of lunar surface uplifts, an approach that has had many successful applications on Mars. Similar approaches can apply other ground penetrating radar data for the Moon, such as will be available from the ongoing Chang’e-4 mission.

关键词： lunar penetrating radar impact crater ejecta deposits Chang'e-3 permittivity Moon

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What happened at Precambrian-Cambrian boundary

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科技风 2010年第11期 267-页

作者： Weijia Zhang1a Xiaodong Zou1b Hangjie Yu2 Yang Lei1a(1a.Department ofPhysics and Astronomy, PekingUniversity, Beijing 100871 1b.Research Institute of Paleontology, Peking University, Beijing 100871 2.School of Physics, Sun Yat-sen University, Zhuhai, Guangdong 510275) Department of Physics and Astronomy Peking UniversityBeijing 100871 Research Institute of Paleontology Peking UniversityBeijing 100871 School of Physics Sun Yat-sen UniversityZhuhaiGuangdong 510275

The Precambrian-Cambrian boundary represents one of the most puzzling and intriguing transitions in Earth history. One of the former hypotheses put forward an evolutional mechanism after a bolide impact, which is still uncertain. Anyhow, biological and geological studies seem to be favorable to an impact. Three most important elements were discovered and thus shed light upon the issue.

关键词： impact crater iridium anomaly negative C13 excursion

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