Publication of results obtained with Kakioka Magnetic Observatory data should be cited as below.
Example 1: Kakioka geomagnetic per-second data set
Kakioka Magnetic Observatory, 2013, Kakioka geomagnetic field 1-second digital data in IAGA-2002 format [dataset], Kakioka Magnetic Observatory Digital Data Service, doi: 10.48682/186bd.58000
Example 2: Memanbetsu K-index dataset
Kakioka Magnetic Observatory, 2015, Memambetsu K-index [dataset], Kakioka Magnetic Observatory Digital Data Service, doi: 10.48682/386d7.00250
For specific citation instructions on each dataset, see Citation on the Metadata (English) page in Digital Data Service.