The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango, El Salvador حسب Smith, VC, Costa, A, Aguirre-Díaz, G, Pedrazzi, D, Scifo, A, Plunkett, G, Poret, M, Tournigand, P-Y, Miles, D, Dee, MW, McConnell, JR, Sunyé-Puchol, I, Harris, PD, Sigl, M, Pilcher, JR, Chellman, N, Gutiérrez, E