Predecessors of the giant 1960 Chile earthquake

Marco Cisternas (), Brian F. Atwater, Fernando Torrejón, Yuki Sawai, Gonzalo Machuca, Marcelo Lagos, Annaliese Eipert, Cristián Youlton, Ignacio Salgado, Takanobu Kamataki, Masanobu Shishikura, C. P. Rajendran, Javed K. Malik, Yan Rizal and Muhammad Husni
Additional contact information
Marco Cisternas: Pontificia Universidad Católica de Valparaíso
Brian F. Atwater: US Geological Survey at University of Washington
Fernando Torrejón: Centro EULA-Chile
Yuki Sawai: National Institute of Advanced Industrial Science and Technology
Gonzalo Machuca: Universidad de Concepción
Marcelo Lagos: Pontificia Universidad Católica de Chile
Annaliese Eipert: National Oceanic and Atmospheric Administration
Cristián Youlton: Pontificia Universidad Católica de Valparaíso
Ignacio Salgado: Pontificia Universidad Católica de Valparaíso
Takanobu Kamataki: National Institute of Advanced Industrial Science and Technology
Masanobu Shishikura: National Institute of Advanced Industrial Science and Technology
C. P. Rajendran: Centre for Earth Science Studies
Javed K. Malik: Indian Institute of Technology
Yan Rizal: Institute of Technology
Muhammad Husni: Meteorological and Geophysical Agency of Indonesia

Nature, 2005, vol. 437, issue 7057, 404-407

Abstract: Earthquake succession The common assumption that the longer the time since an earthquake, the larger the next earthquake slip, seemed not to apply to the giant magnitude 9.5 Chile earthquake of 1960. It had been 123 years since the last earthquake but the 1960 slip was equivalent to about 300 years' worth of plate motion. Based on historical writings, estuarine stratigraphy, diatom palaeoecology and tree ring data, Cisternas et al. have profiled the predecessors of the Chile earthquake in 1575, 1737 and 1837. This history shows that the giant earthquake of 1960 released strain that lesser events had left unspent. Stress build-up through multiple recurrence intervals may also have contributed to the extreme magnitude of the 2004 Sumatra–Andaman earthquake.

Date: 2005
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DOI: 10.1038/nature03943

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