Ion upflow observed in the polar ionosphere

Soga Sato, Huixin Liu, Shigeto Watanabe, Yasunobu Ogawa

Research output: Contribution to journalArticle

Abstract

Ion upflow has been investigated by use of ESR (EISCAT Svalbard Radar), SuperDARN, ACE satellite and CHAMP satellite. The field-aligned ion upflows were observed by ESR, which occurred in night-time between 16 and 17, April 2002, and 19 June 2004. However, ESR didn't show remarkable increase of electron density, electron temperature and ion temperature, which are generated by auroral particle precipitation or frictional heating. The Solar wind parameters were obtained by ACE satellite. SuperDARN showed variation of convection electric field depending on By component of Interplanetary Magnetic Field. CHAMP satellite observed also variations of neutral density, neutral wind, ion density and electron temperature along the satellite orbits. At the time, ESR was in the polar cap region. Our analyses may suggest that the ion upflow observed by ESR was generated in the upwind region of plasma convection in the high-latitude ionosphere and was moving to ESR station by the convection.

Original languageEnglish
Pages (from-to)13-25
Number of pages13
JournalJournal of the Hokkaido University, Faculty of Science, Series VII: Geophysics
Issue number70
Publication statusPublished - 2007
Externally publishedYes

Fingerprint

Ionosphere
ionospheres
radar
ionosphere
Radar
Satellites
ion
Ions
Advanced Composition Explorer
Electron temperature
CHAMP
ions
convection
Radar stations
Solar wind
electron energy
particle precipitation
electron
satellite orbits
temperature

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Geophysics

Cite this

Ion upflow observed in the polar ionosphere. / Sato, Soga; Liu, Huixin; Watanabe, Shigeto; Ogawa, Yasunobu.

In: Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics, No. 70, 2007, p. 13-25.

Research output: Contribution to journalArticle

@article{46dfd7ffef00451282f1044174fed045,
title = "Ion upflow observed in the polar ionosphere",
abstract = "Ion upflow has been investigated by use of ESR (EISCAT Svalbard Radar), SuperDARN, ACE satellite and CHAMP satellite. The field-aligned ion upflows were observed by ESR, which occurred in night-time between 16 and 17, April 2002, and 19 June 2004. However, ESR didn't show remarkable increase of electron density, electron temperature and ion temperature, which are generated by auroral particle precipitation or frictional heating. The Solar wind parameters were obtained by ACE satellite. SuperDARN showed variation of convection electric field depending on By component of Interplanetary Magnetic Field. CHAMP satellite observed also variations of neutral density, neutral wind, ion density and electron temperature along the satellite orbits. At the time, ESR was in the polar cap region. Our analyses may suggest that the ion upflow observed by ESR was generated in the upwind region of plasma convection in the high-latitude ionosphere and was moving to ESR station by the convection.",
author = "Soga Sato and Huixin Liu and Shigeto Watanabe and Yasunobu Ogawa",
year = "2007",
language = "English",
pages = "13--25",
journal = "Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics",
issn = "0441-067X",
publisher = "Hokkaido University",
number = "70",

}

TY - JOUR

T1 - Ion upflow observed in the polar ionosphere

AU - Sato, Soga

AU - Liu, Huixin

AU - Watanabe, Shigeto

AU - Ogawa, Yasunobu

PY - 2007

Y1 - 2007

N2 - Ion upflow has been investigated by use of ESR (EISCAT Svalbard Radar), SuperDARN, ACE satellite and CHAMP satellite. The field-aligned ion upflows were observed by ESR, which occurred in night-time between 16 and 17, April 2002, and 19 June 2004. However, ESR didn't show remarkable increase of electron density, electron temperature and ion temperature, which are generated by auroral particle precipitation or frictional heating. The Solar wind parameters were obtained by ACE satellite. SuperDARN showed variation of convection electric field depending on By component of Interplanetary Magnetic Field. CHAMP satellite observed also variations of neutral density, neutral wind, ion density and electron temperature along the satellite orbits. At the time, ESR was in the polar cap region. Our analyses may suggest that the ion upflow observed by ESR was generated in the upwind region of plasma convection in the high-latitude ionosphere and was moving to ESR station by the convection.

AB - Ion upflow has been investigated by use of ESR (EISCAT Svalbard Radar), SuperDARN, ACE satellite and CHAMP satellite. The field-aligned ion upflows were observed by ESR, which occurred in night-time between 16 and 17, April 2002, and 19 June 2004. However, ESR didn't show remarkable increase of electron density, electron temperature and ion temperature, which are generated by auroral particle precipitation or frictional heating. The Solar wind parameters were obtained by ACE satellite. SuperDARN showed variation of convection electric field depending on By component of Interplanetary Magnetic Field. CHAMP satellite observed also variations of neutral density, neutral wind, ion density and electron temperature along the satellite orbits. At the time, ESR was in the polar cap region. Our analyses may suggest that the ion upflow observed by ESR was generated in the upwind region of plasma convection in the high-latitude ionosphere and was moving to ESR station by the convection.

UR - http://www.scopus.com/inward/record.url?scp=84891823796&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891823796&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84891823796

SP - 13

EP - 25

JO - Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics

JF - Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics

SN - 0441-067X

IS - 70

ER -