Intermittent non-axial dipolar-field dominance of twin Laschamp excursions by Hyodo, M, Nakagawa, T, Matsushita, H, Kitaba, I, Yamada, K, Tanabe, S, Bradák, B, Miki, M, McLean, D, Staff, RA, Smith, VC, Albert, PG, Bronk Ramsey, C, Yamasaki, A, Kitagawa, J, Schlolaut, G, Gotanda, K, Tsumura, K, Inagawa, K, Kumazawa, K, Abe, H, Sugo, S, Takahashi, K, Kitamura, A