Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2020, 47 (7), pp.e2019GL086685. ⟨10.1029/2019GL086685⟩ Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2020-04, Vol. 47, N. 7, P. e2019GL086685 (11p.) Geophysical Research Letters, 2020, 47 (7), pp.e2019GL086685. ⟨10.1029/2019GL086685⟩