Aa Indices.
收藏data.gov.uk2026-05-07 更新2026-04-25 收录
下载链接：
https://www.data.gov.uk/dataset/6dbd8a02-338a-4203-8cb5-a6805f0e5fda/aa-indices
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资源简介：
The aa index is a simple global geomagnetic activity index, with units of 1 nT (nanotesla), which is produced from the K indices from two approximately antipodal observatories. At present these are...
提供机构：
British Geological Survey (BGS)
