NAOC Open IR
Correlation between mars' semidiurnal LOD amplitude variation and atmospheric dust cycle index
Zhou, Yonghong1,2,3; Xu, Xueqing1,2,4; Xu, Cancan3,4; Liao, Xinhao1,2
2020-09-01
Source PublicationPLANETARY AND SPACE SCIENCE
ISSN0032-0633
Volume188Pages:8
AbstractThe Mars' rotational rate, or equivalently its length-of-day (LOD), varies slightly due to global atmospheric changes. And the atmospheric dust cycle is considered to be one key process impacting the Mars' atmosphere. Lewis and Barker (2005) demonstrated the close link of the semidiurnal tidal amplitude with the atmospheric dust content. In consideration of tidal effects in the Mars' variable rotation, possible connection may exist between the Mars' semidiurnal LOD amplitude variation and atmospheric dust cycles. In this study, the Mars' LOD variations which are influenced by global atmosphere, and the atmospheric dust cycle index (ADCI) are computed based on eight realistic scenarios of the Martian Years (MY) 24-31 of the Martian Climate Database. The semidiurnal LOD amplitude change and the ADCI are found to be correlated at the 99% significance level, and they present similar time-varying wavelet spectral structures. In mature stages of global dust storms in MYs 25 and 28, relatively high LOD and ADCI values occurred synchronously across the time scales, ranging from a few months' high frequency to seasonal and over one year's lower frequency band. The close relation between the semidiurnal LOD amplitude variation and the ADCI reflects the strong coupling between the solid Mars and surficial atmosphere system, which relates primarily to the semidiurnal atmospheric tide.
KeywordMars' rotation LOD Atmospheric dust cycle Semidiurnal variation Excitation function Atmospheric tide
Funding OrganizationNSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA
DOI10.1016/j.pss.2020.104963
WOS KeywordGENERAL-CIRCULATION MODEL ; ANGULAR-MOMENTUM ; THERMAL TIDES ; INTERANNUAL VARIABILITY ; ROTATION VARIATIONS ; MARTIAN ATMOSPHERE ; SURFACE PRESSURE ; SIMULATIONS ; EXCITATION ; GRAVITY
Language英语
Funding ProjectNSFC[11773057] ; NSFC[11673049] ; NSFC[11973010] ; NSFC[11673053] ; STCSM[06DZ22101] ; CASYIPA[2019265]
Funding OrganizationNSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA ; NSFC ; NSFC ; STCSM ; STCSM ; CASYIPA ; CASYIPA
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000539160800005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83320
Collection中国科学院国家天文台
Corresponding AuthorZhou, Yonghong
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, CAS Key Lab Planetary Sci, Shanghai, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai Key Lab Space Nav & Positioning Tech, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Yonghong,Xu, Xueqing,Xu, Cancan,et al. Correlation between mars' semidiurnal LOD amplitude variation and atmospheric dust cycle index[J]. PLANETARY AND SPACE SCIENCE,2020,188:8.
APA Zhou, Yonghong,Xu, Xueqing,Xu, Cancan,&Liao, Xinhao.(2020).Correlation between mars' semidiurnal LOD amplitude variation and atmospheric dust cycle index.PLANETARY AND SPACE SCIENCE,188,8.
MLA Zhou, Yonghong,et al."Correlation between mars' semidiurnal LOD amplitude variation and atmospheric dust cycle index".PLANETARY AND SPACE SCIENCE 188(2020):8.
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