Spatial scales of the magnetic ramp at the Venusian bow shock
Spatial scales of the magnetic ramp at the Venusian bow shock
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DOI：
10.5194/angeo-29-2081-2011
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发表时间：
2011-11
影响因子：
1.9
通讯作者：
A. Dimmock;S. Walker;Tielong Zhang;S. Pope
中科院分区：
文献类型：
--
作者：
A. Dimmock;S. Walker;Tielong Zhang;S. Pope
抽象。通常，多航天器飞行任务非常适合于研究冲击波的空间尺度，因为时间和空间变化是分开的。这些飞行任务不可能在所有地点进行，因此无法在地球以外进行现场多航天器测量。本文介绍了一个研究冲击的空间尺度使用单个航天器测量金星快车航天器。尺度是根据ISEE和Cluster任务测量的冲击过冲尺度的先前知识确定的。这项研究涵盖了从2006年到2009年大约60次金星弓形激波的穿越。研究了激波斜坡空间尺度、超调量和上游激波参数之间的统计关系。我们发现，尽管有些不同的太阳风条件下，我们的结果与那些基于多航天器任务在地面弓形激波。
Abstract. Typically multi-spacecraft missions are ideally suited to the study of shock spatial scales due to the separation of temporal and spatial variations. These missions are not possible at all locations and therefore in-situ multi-spacecraft measurements are not available beyond the Earth. The present paper presents a study of shock spatial scales using single spacecraft measurements made by the Venus Express spacecraft. The scales are determined based on previous knowledge of shock overshoot scales measured by the ISEE and Cluster missions. The study encompasses around 60 crossings of the Venusian bow shock from 2006 to 2009. The statistical relationship between the shock ramp spatial scales, overshoot and upstream shock parameters are investigated. We find that despite somewhat different solar wind conditions our results are comparable with those based on multi-spacecraft missions at the terrestrial bow shock.