水星上的空洞:空间模式的综合分析及其与陨石坑和结构的关系

IF 2.9 3区 地球科学 Q2 ASTRONOMY & ASTROPHYSICS Earth and Space Science Pub Date : 2024-12-05 DOI:10.1029/2024EA003854
Barbara De Toffoli, Valentina Galluzzi, Matteo Massironi, Sebastien Besse, Gene Walter Schmidt, Oceane Barraud, Salvatore Buoninfante, Pasquale Palumbo
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引用次数: 0

摘要

水星上的空洞很小(几百米-几公里),浅(几十米),不规则的洼地通常在星系团中发现,通常与撞击坑有关,可能是由于挥发性物质的损失而形成的。虽然它们确切的形成过程仍有争议,但各种假说认为是升华或空间风化。本研究分析了全球凹陷的分布,探讨了其空间格局及其与关键地质特征的关系。我们的发现挑战了空穴起源于单一挥发物丰富的表层的观点,表明挥发物分散在整个地壳中。空洞与特定的地质单元或海拔没有相关性,表明没有单一的挥发源。此外,空洞的短暂性表明,它们在较老的、退化的陨石坑中很少见,但在较年轻的陨石坑或具有深层特征的较老的陨石坑中很常见,这暗示了通过撞击或火山构造活动对物质进行再加工的联系。
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Hollows on Mercury: A Comprehensive Analysis of Spatial Patterns and Their Relationship to Craters and Structures

Hollows on Mercury are small (hundreds of meters - few kilometers), shallow (tens of meters), irregular depressions typically found in clusters, often associated with impact craters, and likely formed by the loss of volatile materials. While their exact formation process remains debated, various hypotheses suggest sublimation or space weathering. In this study, we analyzed the global distribution of hollows, exploring their spatial patterns and relationships with key geological features. Our findings challenge the idea that hollows arise from a single volatile-rich surface layer, suggesting instead that volatiles are dispersed throughout the crust. Hollows show no correlation with specific geological units or elevations, indicating no singular volatile source. Moreover, the transitory nature of hollows is suggested as they are rare in older, degraded craters but common in younger ones or older craters with deep-seated features, hinting at a link to the reworking of materials through impacts or volcano-tectonic activity.

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来源期刊
Earth and Space Science
Earth and Space Science Earth and Planetary Sciences-General Earth and Planetary Sciences
CiteScore
5.50
自引率
3.20%
发文量
285
审稿时长
19 weeks
期刊介绍: Marking AGU’s second new open access journal in the last 12 months, Earth and Space Science is the only journal that reflects the expansive range of science represented by AGU’s 62,000 members, including all of the Earth, planetary, and space sciences, and related fields in environmental science, geoengineering, space engineering, and biogeochemistry.
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