Flux transfer events at Mercury
Flux transfer events at Mercury
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DOI：
10.1029/ja090ia11p11067
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发表时间：
1985-11
影响因子：
--
通讯作者：
C. Russell;R. Walker
中科院分区：
文献类型：
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作者：
C. Russell;R. Walker
对水手10号在水星磁层顶附近的三个可用交叉点的高分辨率磁测量结果进行的高分辨率检查揭示了所谓通量转移事件（FTE）的特征。这些事件发生在磁鞘和磁层。它们持续约1秒，因此有约400公里的尺寸，或约5%的水星磁层宽度。这个相对尺寸与在地球上观察到的相似，但重复率比水星快一个数量级。净通量传输量远小于地球。我们估计，只有不到1%的可用太阳风潜在的下降是由FTE的应用到水星的磁层。“稳态”重联的证据也被观察到，这可能会施加一个潜在的下降，从5到25千伏整个水星磁层顶。磁层顶本身似乎有500公里厚。在交叉位置的磁层顶的形状可以近似为一个简单的旋转对称的圆锥截面，其焦点在行星的中心，偏心率为0.8。
An examination of high-resolution Mariner 10 magnetic measurements in the vicinity of the Mercury magnetopause for the three available crossings at high resolution reveals the signatures of what have been called flux transfer events (FTE). These events occur both in the magnetosheath and in the magnetosphere. They last about 1 s and hence have a dimension of about 400 km, or about 5% of the width of the Mercury magnetosphere. This relative dimension is similar to that observed at earth, but the repetition rate is about an order of magnitude faster at Mercury. The net amount of flux transfer is much less than that at the earth. We estimate that less than 1% of the available solar wind potential drop is applied by FTE's to the magnetosphere of Mercury. Evidence for “steady state” reconnection is also observed which may apply a potential drop from 5 to 25 kV across the Mercury magnetopause. The magnetopause itself appears to be about 500 km thick. The shape of the magnetopause at the crossing locations can be approximated with a simple rotationally symmetric conic section with its focus at the center of the planet and an eccentricity of 0.8.