Nonmigrating tides in the Martian atmosphere as observed by MAVEN IUVS
Nonmigrating tides in the Martian atmosphere as observed by MAVEN IUVS
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MAVEN IUVS 观测到的火星大气中的非迁移潮汐
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Jakosky
中科院分区：
文献类型：
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作者：
D. Lo;R. Yelle;N. Schneider;S. Jain;A. Stewart;S. England;J. Deighan;A. Stiepen;J. S. Evans;M. Stevens;M. Chaffin;M. Crismani;W. McClintock;J. Clarke;G. Holsclaw;F. Lefévre;B. Jakosky
使用火星大气和挥发物演变使命（MAVEN）成像紫外光谱仪（IUVS），我们发现在火星大气中的CO2密度的周期性纵向变化。这些密度变化是从100-190公里高度范围内临边扫描观测到的CO2+（B2 +→X2+）发射得出的。的变化表现出显着的结构与纵波数1，2和3在一个有效的恒定的当地太阳时帧，我们把这种结构的nonmigrating潮汐。2波分量主要由赤道的每日向东移动的DE 1潮和中纬度的半日静止S 0潮组成。波-3主要由昼夜向东移动的DE 2潮主导，而半日向东移动的SE 1潮可能导致中纬度的振幅增加。波-1分量的结构可以用半日向西移动的SW 1潮来解释。
Using the Mars Atmospheric and Volatile EvolutioN mission (MAVEN) Imaging Ultraviolet Spectrograph (IUVS), we found periodic longitudinal variations in CO2 density in the Martian atmosphere. These density variations are derived from observations of the CO2+ ( B2Σ+→X2Π ) emission from limb scans in the 100–190 km altitude range. The variations exhibit significant structure with longitudinal wave numbers 1, 2, and 3 in an effectively constant local solar time frame, and we attribute this structure to nonmigrating tides. The wave‐2 component is dominated by the diurnal eastward moving DE1 tide at the equator and the semidiurnal stationary S0 tide at the midlatitudes. Wave‐3 is dominated by the diurnal eastward moving DE2 tide, with possibly the semidiurnal eastward moving SE1 tide causing an amplitude increase at the midlatitudes. Structure in the wave‐1 component can be explained by the semidiurnal westward moving SW1 tide.