A new type of magnetic wave unveiled by Swarm
Combining satellite measurements from Swarm, as well as from the earlier German Champ mission and Danish Ørsted mission, with a computer model of the geodynamo, a new type of magnetic wave, with a 7 year period, and a westward drift at phase speed of 1500km/year, has been mapped at the Earth’s core-mantle boundary. Such Magneto-Coriolis …