A general climatology of categorized Martian ionospheric irregularities

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外文摘要：A climatological survey of Martian ionospheric plasma density irregularities was conducted by exploring the in-situ measurements of the Mars Atmosphere and Volatile EvolutioN(MAVEN)spacecraft.The irregularities were first classified as enhancement,depletion,and oscillation.By checking the simultaneous magnetic field fluctuation,the irregularities have been classified into two types:with or without magnetic signatures.The classified irregularities exhibit diverse global occurrence patterns,as those with magnetic signatures tend to appear near the periphery of the crustal magnetic anomaly(MA),and those without magnetic signatures prefer to appear either inside of the MA or outside of the MA,depending on the type and solar zenith angle.Under most circumstances,the irregularities have a considerable occurrence rate at altitudes above the ionospheric dynamo height(above 200 km),and the magnetization state of the ions seems irrelevant to their occurrence.In addition,the irregularities do not show dependence on magnetic field geometry,except that the enhancement without magnetic signatures favors the vertical field line,implying its equivalence to the localized bulge.Other similarities and discrepancies exist in reference to previous studies.We believe this global survey complements previous research and provides crucial research clues for future efforts to clarify the nature of the Martian ionospheric irregularities.

外文关键词：

MarsMAVENIonosphereIonospheric irregularitiesCrustal magnetic anomalyPlasma

作者：

Xin WAN、Jiahao ZHONG、Yongqiang HAO、Chao XIONG、Hui WANG、Yutian CAO、Jun CUI、Yiwen LIU、Qiaoling LI、Jiawei KUAI

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作者单位：

Planetary Environmental and Astrobiological Research Laboratory(PEARL).School of Atmospheric Sciences,Sun Yat-sen University,Zhuhai 519082,China

Key Laboratory of Tropical Atmosphere-Ocean System,Ministry of Education,Zhuhai 519082,China

Planetary Environmental and Astrobiological Research Laboratory(PEARL),School of Atmospheric Sciences,Sun Yat-Sen University,Zhuhai 519082,China

Department of Space Physics,College of Electronic Information,Luojia Laboratory,Wuhan University,Wuhan 430079,China

School of Physics and Electronic Information,Shangrao Normal University,Shangrao 334001,China

School of Petroleum,China University of Petroleum-Beijing at Karamay,Karamay 834000,China

College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

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出版年：

2024

DOI：

10.1007/s11430-024-1388-x

中国科学:地球科学(英文版)

中国科学院

中国科学:地球科学(英文版)

影响因子：1.002

ISSN：1674-7313

年,卷(期)：2024.67(10)