A team of researchers from the Royal Observatory of Belgium, Université Savoie Mont Blanc and Institut de Physique du Globe de Paris has identified nonaxisymmetric wavelike patterns in the equatorial region of the Earth's core. In their paper published in Proceedings of the National Academy of Sciences the group describes their study of geomagnetic data obtained from satellites and ground-based observatories over a twenty-year period and describes fluctuations they found beneath the equatorial part of the planet.