HMC Index
收藏B2FIND2026-04-25 收录
下载链接：
https://b2find.eudat.eu/dataset/5b0b36df-21b6-5683-a3cd-791023a31b22
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资源简介：
The HMC (Hourly Magnetospheric Currents) index measures the activity of large-scale magnetospheric currents on Earth's surface from 1900 to 2015. It resolves the absolute...
