Radio Science with Voyager 1 at Jupiter: Preliminary Profiles of the Atmosphere and Ionosphere
Radio Science with Voyager 1 at Jupiter: Preliminary Profiles of the Atmosphere and Ionosphere
复制标题
航行者 1 号在木星的无线电科学：大气层和电离层的初步剖面
DOI：
10.1126/science.204.4396.976
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发表时间：
1979
期刊：
影响因子：
56.9
通讯作者：
T. Croft
中科院分区：
文献类型：
--
作者：
V. Eshleman;G. Tyler;G. E. Wood;G. F. Lindal;John D. Anderson;G. Levy;T. Croft
南赤道带木星大气层的一个Bracharv剖面表明：（i）对流层顶出现在100毫巴的压力水平和大约113 K的温度，（ii）在大约35毫巴的水平上有一个较高的暖逆温层，（iii）较低高度的恒定直减率与大约2 K/km的绝热值相匹配。温度在600毫巴时达到150 K。在南纬12度和赤道附近的下午和黎明前电离层剖面的初步观测结果表明，在阳面，590公里的顶面等离子体尺度高度在3500公里的高度以上变为960公里，在阴面，在所有测量高度上的峰值约为960公里。标度高度的较高值对应于在双极扩散平衡的质子和电子的等离子体的假设下的1100 K的等离子体温度。上电离层的峰值电子浓度，在昼侧约为每立方厘米2x 105，在夜侧约为10倍。这些峰值分别出现在1600和2300公里的高度。预计持续的分析将扩展和完善这些结果，并用于调查其他地区和现象。
A preliminarv profile of the atmosphere of Jupiter in the South Equatorial Belt shows (i) the tropopause occurring at a pressure level of 100 millibars and temperature of about 113K, (ii) a higher warm inversion layer at about the 35-millibar level, and (iii) a lower-altitude constant lapse rate matching the adiabatic value of about 2 K per kilometer, with the temperatutre reaching 150 K at the 600-millibar level. Preliminary afternoon and predawn ionospheric profiles at 12� south latitude and near the equator, respectively, have topside plasma scale heights of 590 kilometers changing to 960 kilometers above an altitucde of 3500 kilometers for the dayside, and about 960 kilomneters at all measured heights above the peak for the nightside. The higher value of scale height corresponds to a plasma temperature of 1100 K under the assumption of a plasma of protons and electrons in ambipolar diffusive equilibrium. The peak electron concentration in the upper ionosphere is approximately 2 x 105 per cubic centimeter for the dayside and about a factor of 10 less for the nightside. These peaks occur at altitudes of 1600 and 2300 kilometers, respectively. Continuing analyses are expected to extend and refine these results, and to be used to investigate other regions and phenomena.