Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL096808 |
Boulder Fall Ejecta: Present day activity on Mars | |
S. Vijayan; Harish; K.B. Kimi; S. Tuhi; K. Vigneshwaran; R.K. Sinha; S.J. Conway; B. Sivaraman; Anil Bhardwaj | |
2021-12-17 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Boulder falls are an archives of recent surface activity on Mars, however, determining how recently they fell remains elusive. Our multitemporal HiRISE image analysis shows that new tracks are characterized by a herringbone-like ejecta pattern at each boulder bounce that we call boulder fall ejecta(BFE). First systematic survey of BFE revealed ∼4500 tracks whose total integrated track length is ∼900km. Our BFE longevity analysis reveals that these tracks likely formed in the last few decades. From few examples we also observed slope streaks originating from BFE tracks, providing additional evidence favoring a dry origin theory. BFE fade in as little as ∼2-4 Mars years, whereas, others can persist >6 Mars years suggesting differential weathering. Nearly 30% of BFE are observed in the Cerberus Fossae region, which suggests it is one of the most seismically active regions. Thus, BFE can be used to recognize very recent surface processes on planetary surfaces. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/344229 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | S. Vijayan,Harish,K.B. Kimi,et al. Boulder Fall Ejecta: Present day activity on Mars[J]. Geophysical Research Letters,2021. |
APA | S. Vijayan.,Harish.,K.B. Kimi.,S. Tuhi.,K. Vigneshwaran.,...&Anil Bhardwaj.(2021).Boulder Fall Ejecta: Present day activity on Mars.Geophysical Research Letters. |
MLA | S. Vijayan,et al."Boulder Fall Ejecta: Present day activity on Mars".Geophysical Research Letters (2021). |
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