Now showing items 21-24 of 24

    • Ojeda Vargas, Javier; Ruiz Tapia, Sergio; Campo, Francisco del; Carvajal, Matías (Seismological Society of America, 2020)
      One of the most notable seismic sequences in modern times was recorded in May 1960 along the southern Chilean subduction zone. The sequence started on 21 May with the M-w 8.1 Concepcion earthquake; 33 hr later the M-w 9.5 ...
    • Ruiz Tapia, Sergio; Tavera, H.; Poli, P.; Herrera C., Carolina; Flores, C.; Rivera, E.; Madariaga, R. (Elsevier, 2017)
      On 24 November 2015 two events of magnitude Mw 7.5 and Mw 7.6 occurred at 600kmdepth under the Peru–Brazil boundary. These two events were separated in time by 300s. Deep event doublets occur often under South America. The ...
    • Sáez, Miguel; Pastén, César; Ruiz Tapia, Sergio; Salomón, José (Seismological Society of America, 2018)
      We studied the influence of a buried high-velocity layer (HVL) on the surface ground amplification of the city of Llolleo, Chile, where large peak ground accelerations were observed during the 1985 Mw 8.0 Valparaiso and ...
    • Ruiz Tapia, Sergio; Klein, Emilie; Campo, Francisco del; Rivera, Efraín; Poli, Piero; Metois, Marianne; Vigny, Christophe; Báez, Juan Carlos; Vargas Easton, Víctor; Leyton Florez, Felipe; Madariaga, Raúl; Fleitout, Luce (Seismological Soc Amer, 2016)
      On 16 September 2015, the M-w 8.3 Illapel, Chile, earthquake broke a large area of the Coquimbo region of north-central Chile. This area was well surveyed by more than 15 high-rate Global Positioning System (GPS) instruments, ...