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地球自转对北极黄河站观测日侧极光弧运动的影响

丘琪 杨惠根 陆全明 胡泽骏

丘琪, 杨惠根, 陆全明, 胡泽骏. 地球自转对北极黄河站观测日侧极光弧运动的影响[J]. 空间科学学报, 2016, 36(6): 909-915. doi: 10.11728/cjss2016.06.909
引用本文: 丘琪, 杨惠根, 陆全明, 胡泽骏. 地球自转对北极黄河站观测日侧极光弧运动的影响[J]. 空间科学学报, 2016, 36(6): 909-915. doi: 10.11728/cjss2016.06.909
QIU Qi, YANG Huigen, LU Quanming, HU Zejun. Motion of Dayside Auroral Arc Observed At Yellow River Station Affected by the Earth's Rotation[J]. Journal of Space Science, 2016, 36(6): 909-915. doi: 10.11728/cjss2016.06.909
Citation: QIU Qi, YANG Huigen, LU Quanming, HU Zejun. Motion of Dayside Auroral Arc Observed At Yellow River Station Affected by the Earth's Rotation[J]. Journal of Space Science, 2016, 36(6): 909-915. doi: 10.11728/cjss2016.06.909

地球自转对北极黄河站观测日侧极光弧运动的影响

doi: 10.11728/cjss2016.06.909
基金项目: 

国家自然科学基金重点项目(41431072),国家自然科学基金面上项目(41274164,41504115),南北极环境综合考察与评估专项(CHINARE2016-02-03,CHINARE2016-04-01),中国科学院战略性先导科技专项(XDA04060201),浦东新区科技发展基金(Pkj2013-z01),国家海洋局极地科学重点实验室开放基金(KP201303)和中组部青年拔尖人才计划项目共同资助

详细信息
    通讯作者:

    丘琪,E-mail:ariesgreen@163.com

  • 中图分类号: P353.6

Motion of Dayside Auroral Arc Observed At Yellow River Station Affected by the Earth's Rotation

  • 摘要: 利用北极黄河站全天空极光数据,采用AACGM模型,将日侧极光弧映射到地磁坐标系,定量计算地球自转导致的极光弧运动速度.对于任意一条极光弧,其偏斜角定义为极光弧方向与当地地磁东西方向的夹角.研究发现,地球自转产生的速度由极光弧离开天顶的距离和偏斜角决定,其中偏斜角的影响更为重要,其还决定速度的方向.在4年的观测数据中,提取超过40000张出现极光弧的图像,计算极光弧偏斜角.计算结果表明,日侧极光弧的偏斜角随磁地方时增大而逐渐减小,并在大约10:00MLT(磁地方时)附近发生反转.由于偏斜角的反转,地球自转产生的极光弧运动在晨侧多为极向运动,到午后多为赤道向运动.相比午前,午后的运动更为明显,最大速度可超过300m·-1.

     

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出版历程
  • 收稿日期:  2015-10-12
  • 修回日期:  2016-03-02
  • 刊出日期:  2016-11-15

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