Geomagnetic conjugate observation of therinospheric waves at midlatitudes
中纬度地区热流层波的地磁共轭观测
基本信息
- 批准号:13573006
- 负责人:
- 金额:$ 7.81万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2001
- 资助国家:日本
- 起止时间:2001 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
(1)We have investigated a nighttime medium-scale traveling ionospheric disturbance(MSTID) observed by an airglow imager at Shigaraki, Japan. The structure was identified in the airglow images of OI (630.0 nm and 777.4 nm) as NW-SE band structures moving southwestward with a velocity of 50 m/s. We found that an electric field oscillation of -1.2 mV/m was sufficient to reproduce the observed airglow amplitudes. This modeled electric field was comparable to that observed by the DMSP F15 satellite as it passed over Shigaraki during our observing period. The DMSP ion drift data show that the oscillation of the polarization electric field correlated with the MSTID structure in the airglow image.(2)We found a large-scale equatorial F-region airglow depletions extending to low-midlatitudes in both hemispheres. The observational sites were located at low-midlatitude geomagnetic conjugate points. Clear depletions of 630.0-nm airglow intensity due to equaterial plasma bubbles were simultaneously observed with two all-sky imagers at Sata, Japan (magnetic latitude 24° N), and its geomagnetic conjugate point, Darwin, Australia (magnetic latitude 22° S). These observations indicate that plasma depletions in the equatorial ionosphere elongate along the geomagnetic field lines.(3)We report for the first time simultaneous observations of MSTIDs at geomagnetic conjugate points in both hemispheres, using two all-sky airglow imagers at midlatitudes. A 630-nm all-sky imager at Sata, Japan, detected MSTIDs with a wave front elongated from NW to SE. MSTIDs with a wave front elongated from SW to NE were observed at the geomagnetic conjugate point, Darwin, Australia. The MSTID structures mapped from Darwin to its magnetic conjugate points along the geomagnetic field lines coincide closely with those in the Sata images. This result suggests that polarization electric field plays an important role in the generation of MSTIDs.
(1)We研究了日本Shigaraki的气辉成像仪观测到的夜间中等尺度行进电离层扰动(MSTID)。在OI(630.0 nm和777.4 nm)的气辉图像中,该结构被识别为以50 m/s的速度向西南方向移动的NW-SE带结构。我们发现,-1.2 mV/m的电场振荡足以再现所观察到的气辉振幅。该模拟电场与DMSP F15卫星在我们的观测期间经过Shigaraki时观测到的电场相当。DMSP离子漂移数据表明,极化电场的振荡与气辉图像中的MSTID结构相关。(2)We发现了一个大规模的赤道F区气辉耗尽延伸到低中纬度地区在两个半球。观测点位于低中纬度地磁共轭点。在日本佐田(磁纬24° N)和澳大利亚达尔文(磁纬22° S)的地磁共扼点,用两台全天空成像仪同时观测到了由于等离子体气泡引起的630.0 nm气辉强度的明显衰减。这些观测结果表明,赤道电离层中的等离子体耗尽沿地磁场线沿着伸长。(3)We 2009年,美国国家天文台利用两台中纬度全天空气辉成像仪,首次报告了在两个半球的地磁共扼点同时观测MSTID的情况。日本佐田的一台630纳米全天空成像仪探测到了MSTID,其波前从西北向东南延伸。在澳大利亚达尔文的地磁共扼点观测到波前由西南向东北方向延长的MSTID。从达尔文到其磁共轭点沿着磁力线的MSTID结构与Sata图像上的结构非常吻合。这一结果表明,极化电场在MSTID的产生中起着重要的作用。
项目成果
期刊论文数量(37)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Geomagnetic conjugate observations of equatorial airglow depletions
- DOI:10.1029/2002gl015347
- 发表时间:2002-08
- 期刊:
- 影响因子:5.2
- 作者:Yuichi Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson
- 通讯作者:Yuichi Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson
Geomagnetic conjugate observations of medium‐scale traveling ionospheric disturbances at midlatitude using all‐sky airglow imagers
- DOI:10.1029/2004gl020262
- 发表时间:2004-08
- 期刊:
- 影响因子:5.2
- 作者:Yuichi Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson
- 通讯作者:Yuichi Otsuka;K. Shiokawa;T. Ogawa;P. Wilkinson
Otsuka, Y: "Geomagnetic conjugate observations of equatorial airglow depletions"Geophys. Res. Lett.. 29,15. 43.1-43.4 (2002)
Otsuka, Y:“赤道气辉消耗的地磁共轭观测”地球物理学。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Shiokawa, K.: "Statistical study of nighttime medium-scale traveling ionospheric disturbances using midlatitude airglow images"J. Geophys. Res.. (in press). (2002)
Shiokawa, K.:“利用中纬度气辉图像进行夜间中尺度移动电离层扰动的统计研究”J.
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Geomagnetic conjugate observation of nighttime medium- and large-scale traveling ionospheric disturbances : FRONT3 campaign
夜间中大规模移动电离层扰动的地磁共轭观测:FRONT3 活动
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Shiokawa;K.;Y.Otsuka;T.Ogawa;M.Yamamoto他7名
- 通讯作者:M.Yamamoto他7名
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SHIOKAWA Kazuo其他文献
Statistical analysis of wavenumber distribution of mesospheric and ionospheric waves in airglow images over ten years: Comparison of Rikubetsu and Shigaraki, Japan, Magadan, Russia and Athabasca, Canada
十年来气辉图像中层波和电离层波波数分布统计分析——日本陆别和信乐、俄罗斯马加丹和加拿大阿萨巴斯卡的比较
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
TSUCHIYA Satoshi;SHIOKAWA Kazuo;OTSUKA Yuichi;NAKAMURA Takuji;YAMAMOTO Mamoru;CONNORS Martin;SCHOFIELD Ian;SHEVTSOV Boris and PODDELSKY;Igor - 通讯作者:
Igor
J-PARC KOTO実験バレル型検出器アップグレード以降の物理ランにおけるK中間子崩壊背景事象の解析
J-PARC KOTO 实验桶探测器升级后运行的物理中 kaon 衰变背景事件分析
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
TSUCHIYA Satoshi;SHIOKAWA Kazuo;TAKEO Daiki;FUJINAMI Hatsuki;OTSUKA Yuichi;MATSUDA S. Takashi;EJIRI K. Mitsumu;NAKAMURA Takuji;and YAMAMOTO Mamoru;篠原智史 - 通讯作者:
篠原智史
陸別・信楽・アサバスカ・マガダンの大気光画像を用いた中間圏大気重力波・中規模伝搬性電離圏擾乱の水平波数分布の長期統計解析
使用陆别、信乐、阿萨巴斯卡和马加丹的气辉图像对中层大气重力波和中尺度传播电离层扰动的水平波数分布进行长期统计分析。
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
TSUCHIYA Satoshi;SHIOKAWA Kazuo;OTSUKA Yuichi;NAKAMURA Takuji;YAMAMOTO Mamoru;CONNORS Martin;SCHOFIELD Ian;SHEVTSOV Boris and PODDELSKY;Igor - 通讯作者:
Igor
日本・カナダの大気光画像を用いた中間圏重力波・TIDの水平位相速度分布の長期統計解析
利用日本和加拿大的气辉图像对中层重力波和 TID 的水平相速度分布进行长期统计分析
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
TSUCHIYA Satoshi;SHIOKAWA Kazuo;FUJINAMI Hatsuki;OTSUKA Yuichi;NAKAMURA Takuji;YAMAMOTO Mamoru;Ian Schofield;and Martin Connors - 通讯作者:
and Martin Connors
探検・科学・異文化理解――ヘディンの軌跡を通して考える
探索、科学和跨文化理解:思考赫定的轨迹
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
TSUCHIYA Satoshi;SHIOKAWA Kazuo;FUJINAMI Hatsuki;OTSUKA Yuichi;NAKAMURA Takuji;YAMAMOTO Mamoru;Ian Schofield;and Martin Connors;松田 素二 - 通讯作者:
松田 素二
SHIOKAWA Kazuo的其他文献
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{{ truncateString('SHIOKAWA Kazuo', 18)}}的其他基金
High-time resolution measurements of aurora and electromagnetic waves using ground-based observation network and satellites
使用地面观测网络和卫星对极光和电磁波进行高时间分辨率测量
- 批准号:
23403009 - 财政年份:2011
- 资助金额:
$ 7.81万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study of the upper atmosphere dynamics using highly sensitive multi-point optical instruments
使用高灵敏度多点光学仪器研究高层大气动力学
- 批准号:
20244080 - 财政年份:2008
- 资助金额:
$ 7.81万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Ground-Satellite observation of geospace environment over Siberia and Japan
西伯利亚和日本地球空间环境的卫星地面观测
- 批准号:
18403011 - 财政年份:2006
- 资助金额:
$ 7.81万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
A study of magnetotail dynamics during substorms using high-time resolution data
使用高时间分辨率数据研究亚暴期间的磁尾动力学
- 批准号:
13640449 - 财政年份:2001
- 资助金额:
$ 7.81万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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