干旱区生态环境知识资源中心(Arid): Ice Permafrost ''Oases'' Close to Martian Equator: Planet Neutron Mapping Based on Data of FREND Instrument Onboard TGO Orbiter of Russian-European ExoMars Mission

Arid

DOI	10.1134/S1063773720060079
	Ice Permafrost ''Oases'' Close to Martian Equator: Planet Neutron Mapping Based on Data of FREND Instrument Onboard TGO Orbiter of Russian-European ExoMars Mission
	Malakhov, A. V.; Mitrofanov, I. G.; Litvak, M. L.; Sanin, A. B.; Golovin, D. V.; Djachkova, M. V.; Nikiforov, S. Yu.; Anikin, A. A.; Lisov, D. I.; Lukyanov, N. V.; Mokrousov, M. I.
通讯作者	Malakhov, AV
来源期刊	ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS
ISSN	1063-7737
EISSN	1562-6873
出版年	2020
卷号	46 期号:6 页码:407-421
英文摘要	We present the first results of Mars neutron sounding by FREND instrument onboard ESA's Trace Gas Orbiter data analysis. Neutron flux mapping is performed with high spatial resolution, which allows to match epithermal neutron flux variation with relief's geomorphological structures. Local regions with suppressed neutron flux indicate the presence of considerable amount of hydrogen atoms in the surface material, which is supposedly part of water molecules. Local regions in the equatorial latitudes of the planet with significant decrease of neutron flux are discovered, which points to large mass fraction of water ice in the soil material, ranging from tens to 100%. Considering high water content, these regions are named ice permafrost ''oases.'' Estimates of ice mass fraction for 7 such regions are obtained based on neutron measurements analysis and end-to-end numerical modeling of the entire physical process of neutron sounding by FREND on Mars orbit. Possible reasons for formation of such ''oases'' and their significance for future Mars exploration are discussed.
英文关键词	planets Mars neutron sounding FREND hydrogen water
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581109600006
WOS关键词	HYDROUS MINERALS ; MARS
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327031
作者单位	[Malakhov, A. V.; Mitrofanov, I. G.; Litvak, M. L.; Sanin, A. B.; Golovin, D. V.; Djachkova, M. V.; Nikiforov, S. Yu.; Anikin, A. A.; Lisov, D. I.; Lukyanov, N. V.; Mokrousov, M. I.] Russian Acad Sci, Space Res Inst, Profsoyuznaya Ul 84-32, Moscow 117997, Russia
推荐引用方式 GB/T 7714	Malakhov, A. V.,Mitrofanov, I. G.,Litvak, M. L.,et al. Ice Permafrost ''Oases'' Close to Martian Equator: Planet Neutron Mapping Based on Data of FREND Instrument Onboard TGO Orbiter of Russian-European ExoMars Mission[J],2020,46(6):407-421.
APA	Malakhov, A. V..,Mitrofanov, I. G..,Litvak, M. L..,Sanin, A. B..,Golovin, D. V..,...&Mokrousov, M. I..(2020).Ice Permafrost ''Oases'' Close to Martian Equator: Planet Neutron Mapping Based on Data of FREND Instrument Onboard TGO Orbiter of Russian-European ExoMars Mission.ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS,46(6),407-421.
MLA	Malakhov, A. V.,et al."Ice Permafrost ''Oases'' Close to Martian Equator: Planet Neutron Mapping Based on Data of FREND Instrument Onboard TGO Orbiter of Russian-European ExoMars Mission".ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS 46.6(2020):407-421.