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Time scheduling of magnetic surveys in mid-latitudes with respect to forecasting geomagnetic activity

机译：中纬度地磁测量与预报地磁活动有关的时间安排

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The quality of magnetic surveys is essentially influenced by the geomagnetic activity. As the in situ measurements are usually limited to very short time period, they must be compared with observatory continuous registrations. When reducing measurements one makes an assumption that diurnal variations of the magnetic field are identical at both the station and the reference observatory. During magnetically quite periods, this assumption is satisfied to an acceptable extent. However, under high geomagnetic activity, the error may easily exceed the acceptable limit. Our analysis indicates that, in mid-latitudes, magnetic surveys should not be made, if some of the Kp values are over 5. Long-term and medium-term forecasts of geomagnetic activity are based on known periodicities (11-year, half-year and 27-day). Short-term forecasts are based on the knowledge of the actual conditions on the Sun, in the solar wind and in the interplanetary magnetic field. Regional Warning Centres, associated in the International Space Environment Service (ISES) deal with forecasts of geomagnetic activity. Links to all 12 centres can be obtained through http://www.ises-spaceweather.org/about-ises/index.html.
机译：磁性测量的质量基本上受地磁活动的影响。由于原位测量通常仅限于非常短的时间段，因此必须将其与天文台连续配准进行比较。当减少测量时，人们会假设在站和参考天文台，磁场的日变化是相同的。在磁性相当的时期内，可以满足此假设。但是，在高地磁活动下，该误差很容易超过可接受的极限。我们的分析表明，如果某些Kp值超过5，则在中纬度地区不应进行磁测。对地磁活动的长期和中期预测是基于已知的周期（11年，年零27天）。短期预报基于对太阳，太阳风和行星际磁场中实际状况的了解。与国际空间环境服务处（ISES）相关联的区域预警中心负责地磁活动的预报。可以通过http://www.ises-spaceweather.org/about-ises/index.html获得指向所有12个中心的链接。

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