The original Toyohara Magnetic Observatory was built in Sakhalin on the occasion of the Second International Polar Year (1932 - 1933). The observatory was moved temporarily to Ikutora (Hokkaido), and finally to Memambetsu (Hokkaido) in 1949. Earth current and atmospheric electricity observations were started in 1950, and magnetic observations began in January 1952. The Memambetsu Magnetic Observatory was designated in 1967 as one of 14 observatories selected to determine the index of geomagnetic activity in the Northern Hemisphere (Kn).
| Memambetsu Magnetic Observatory, Japan Meteorological Agency |
| Memambetsu-syowa 62, Ozora-cho, Abashiri-gun, Hokkaido |
| 099-2356 |
| Japan |