2023年对火星的流星体撞击造成沙尘雪崩,产生了新的痕量,大多数经常的斜坡线都是季节性地从风而不是水中形成。 A 2023 meteoroid impact on Mars caused dust avalanches, creating new streaks, with most recurring slope lineae forming seasonally from wind, not water.

2023年12月在火星上的Apollinaris Mons附近发生的流星体撞击引发了沙尘雪崩,产生了由ExoMars追踪气体轨道器捕捉的一百多条新线条。 A meteoroid impact near Apollinaris Mons on Mars in December 2023 triggered dust avalanches, creating over a hundred new streaks captured by the ExoMars Trace Gas Orbiter. 《自然通讯》发表的研究表明,虽然大多数反复出现的斜坡线(RSL)因风驱动的沙尘雪崩而季节性地形成,但非季节性事件(如撞击或地震)每年造成的影响不到0.1%。 Research published in Nature Communications reveals that while most recurring slope lineae (RSL) form seasonally due to wind-driven dust avalanches, less than 0.1% annually result from non-seasonal events like impacts or marsquakes. 使用机器学习分析了超过 200 万个 RSL 特征，显示大多数条纹出现在五个热点，并随着时间的推移而消失。 Over two million RSL features were analyzed using machine learning, showing most streaks occur in five hotspots and fade over years. 这些调查结果支持以下理论,即RSL主要是干法过程,对早期基于水的假设提出了挑战,并强调长期轨道观测在了解火星动态表面方面的作用。 These findings support the theory that RSL are primarily dry processes, challenging earlier water-based hypotheses and highlighting the role of long-term orbital observations in understanding Mars’ dynamic surface.