Nonmigrating tides in the Martian atmosphere as observed by MAVEN IUVS

被引：51

作者：

Lo, Daniel Y. ^{[1
]}

Yelle, Roger V. ^{[1
]}

Schneider, Nicholas M. ^{[2
]}

Jain, Sonal K. ^{[2
]}

Stewart, A. Ian F. ^{[2
]}

England, Scott L. ^{[3
]}

Deighan, Justin I. ^{[2
]}

Stiepen, Arnaud ^{[2
]}

Evans, J. Scott ^{[4
]}

Stevens, Michael H. ^{[5
]}

Chaffin, Michael S. ^{[2
]}

Crismani, Matteo M. J. ^{[2
]}

McClintock, William E. ^{[2
]}

Clarke, John T. ^{[6
]}

Holsclaw, Gregory M. ^{[2
]}

Lefevre, Franck ^{[7
]}

Jakosky, Bruce M. ^{[2
]}

机构：

[1] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[2] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA

[3] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[4] Computat Phys Inc, Springfield, VA USA

[5] Naval Res Lab, Washington, DC 20375 USA

[6] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA

[7] CNRS, Lab ATmospheres Milieux Observat Spatiales, Paris, France

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 21期

关键词：

ELECTRON-DENSITY PROFILES; THERMAL TIDES; NEUTRAL ATMOSPHERE; CO CAMERON; MARS; ACCELEROMETER; DAYGLOW; WAVES;

D O I：

10.1002/2015GL066268

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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+ (B-2 Sigma(+)-> X-2 Pi) 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.

引用

页码：9057 / 9063

页数：7

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