Siderophile metal fallout to Greenland from the 1991 winter eruption of Hekla (Iceland) and during the global atmospheric perturbation of Pinatubo 由 Gabrielli, P, Barbante, C, Plane, J, Boutron, C, Jaffrezo, J, Mather, T, Stenni, B, Gaspari, V, Cozzi, G, Ferrari, C, Cescon, P