DOI: 10.1002/2014GL060258
论文题名: Mercury's surface magnetic field determined from proton-reflection magnetometry
作者: Winslow R.M. ; Johnson C.L. ; Anderson B.J. ; Gershman D.J. ; Raines J.M. ; Lillis R.J. ; Korth H. ; Slavin J.A. ; Solomon S.C. ; Zurbuchen T.H. ; Zuber M.T.
刊名: Geophysical Research Letters
ISSN: 0094-9983
EISSN: 1944-9714
出版年: 2014
卷: 41, 期: 13 起始页码: 4463
结束页码: 4470
语种: 英语
英文关键词: loss cone
; Mercury
; proton reflectometry
; surface magnetic field
Scopus关键词: Magnetic fields
; Magnetometers
; Magnetosphere
; Plasma sheaths
; Protons
; Reflection
; Reflectometers
; Solar wind
; Dipole fields
; Magnetospheric cusps
; MESSENGER spacecraft
; Planetary surfaces
; Plasma sheet
; Reflectometry
; Southern Hemisphere
; Surface magnetic field
; Mercury (metal)
; magnetic field
; Mercury (planet)
; planetary surface
; plasma
; reflectometry
; solar wind
; spacecraft
英文摘要: Solar wind protons observed by the MESSENGER spacecraft in orbit about Mercury exhibit signatures of precipitation loss to Mercury's surface. We apply proton-reflection magnetometry to sense Mercury's surface magnetic field intensity in the planet's northern and southern hemispheres. The results are consistent with a dipole field offset to the north and show that the technique may be used to resolve regional-scale fields at the surface. The proton loss cones indicate persistent ion precipitation to the surface in the northern magnetospheric cusp region and in the southern hemisphere at low nightside latitudes. The latter observation implies that most of the surface in Mercury's southern hemisphere is continuously bombarded by plasma, in contrast with the premise that the global magnetic field largely protects the planetary surface from the solar wind. Key Points Mercury's offset dipole is confirmed at the surface using proton reflectometry Loss cones are oberved in northern cusp and on low-southern-latitude nightside Mercury's southern hemisphere is bombarded by the solar wind and plasma sheet ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937217844&doi=10.1002%2f2014GL060258&partnerID=40&md5=91970b68f5347c9c5db7d11976a621dc
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7247
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver BC, Canada
Recommended Citation:
Winslow R.M.,Johnson C.L.,Anderson B.J.,et al. Mercury's surface magnetic field determined from proton-reflection magnetometry[J]. Geophysical Research Letters,2014-01-01,41(13).