Mars Pathfinder convective vortices: Frequency of occurrence
Mars Pathfinder convective vortices: Frequency of occurrence
复制标题
火星探路者对流涡旋：发生频率
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
S. Nelli
中科院分区：
文献类型：
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作者：
J. Murphy;S. Nelli
在火星探路者着陆器位置出现小尺度对流涡旋的频率表现出类似于地面尘暴观测的日变化。在83 sol使命期间通过其压力特征检测到的79个涡旋，当与对数据时间覆盖的不完整性的评估相结合时，意味着每个sol至少有两个涡旋通过着陆器站点。如果漩涡是充满灰尘的，从着陆器成像推断，那么观察到的漩涡频率能够保持观察到的大气尘埃负荷对沉降损失。探路者提供的涡旋发生的溶胶时间变化，当与轨道飞行器在非常有限的溶胶时间内对沙尘暴的成像相结合时，提供了一种量化这些小尺度涡旋对大气尘埃循环影响的潜在方法。
The frequency of occurrence of small‐scale convective vortices at the Mars Pathfinder lander location exhibits a diurnal variation similar to terrestrial dust devil observations. The 79 vortices detected via their pressure signatures during the 83 sol mission, when combined with an assessment of the incompleteness of data temporal coverage, implies that at least two vortices passed by the lander site each sol. If the vortices are dust laden, as inferred from lander imaging, then the observed vortex frequency is capable of maintaining the observed atmospheric dust load against sedimentation loss. The time‐of‐sol variation in vortex occurrence provided by Pathfinder, when combined with orbiter imaging of dust devils at a very limited time of sol, offers a potential means of quantifying the effect of these small‐scale vortices upon the atmospheric dust cycle.