Abstract

GOMEZ-CAPERA, Augusto Antonio et al. Calculation of the location and magnitude of the 1785 earthquake in Colombia based on macroseismic intensity data. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2014, vol.38, n.147, pp.206-217. ISSN 0370-3908.

The earthquake that hit Colombia on July 12, 1785, is one of the seismic events with the highest number of macroseismic studies based on historical sources. Most of these studies have assigned a maximum intensity of VIII to the event. Following the study of Salcedo Hurtado and Castaño Castaño (2011), and applying the Bakun and Wentworth (1997) method and the macroseismic intensity attenuation proposed by Gómez Capera and Salcedo Hurtado (2002), we calculated the magnitude m = 6.9±0.2 and the macroseismic epicentre at 28 km from Bogotá. The validation of the attenuation model was performed with the instrumental parameters of the earthquake occurred on May 24, 2008, in the same region of the historical earthquake studied in the present article. Key words: Historical earthquake study, macroseismic intensity, earthquake parameters.

Keywords : Historical earthquake study; macroseismic intensity; earthquake parameters.

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