| 数据题名: | World Data Centre for Geomagnetism, Copenhagen |
| 数据类型: | 数据仓储
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| 语种: | 英语
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| 国别: | Denmark
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| 关键词: | Northern PC Index
; Kp-index
; geomagnetism
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| 学科领域: | Astrophysics and Astronomy ; Geophysics and Geodesy ; Physics ; Natural Sciences ; Geosciences (including Geography) ;
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| 英文摘要: | The WDC has a FTP-server to distribute the PCN index derived from the geomagnetic observatory Qaanaaq (THL) and the Kp-index data products derived at the geomagnetic observatory Niemegk (NGK). The WDC is also holding extensive archives of magnetograms and other geomagnetic observatory data products that predate the introduction of digital data recording. The material is in analogue form such as film or microfiche. The Polar Cap index (abbreviation PC index) consists of the Polar Cap North (PCN) and the Polar Cap South (PCS) index, which are derived from magnetic measurements taken at the geomagnetic observatories Qaanaaq (THL, Greenland, +85o magnetic latitude) and Vostok (VOS, Antarctica, -83o magnetic latitude), respectively. The idea behind these indices is to estimate the intensity of anti-sunward plasma convection in the polar caps. This convection is associated with electric Hall currents and consequent magnetic field variations perpendicular to the antisunward plasma flow (and related Hall current) which can be monitored at the Qaanaaq and Vostok magnetic observatories. PC aims at monitoring the energy input from solar wind to the magnetosphere (loading activity). The index is constructed in such a way that it has a linear relationship with the merging Electric Field at the magnetopause; consequently PC is given in units of mV/m as for the electric field. In August 2013, the International Association of Geomagnetism and Aeronomy (IAGA) endorsed the PC index. The endorsed PC index is accessible at pcindex.org or through WDC Copenhagen. |
| URL: | https://www.re3data.org/repository/r3d100010301
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| 资源类型: | 科学数据
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/111178
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| Appears in Collections: | 全球变化的国际研究计划
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| Recommended Citation: | |
. World Data Centre for Geomagnetism, Copenhagen.
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