EMS-98.MACROSEISMIC RE-ASSESSMENT OF THE EARTHQUAKE OF JULY 12th ,1785 IN COLOMBIA
Published 2011-12-06
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Abstract
The earthquake on July 12, 1785, has been one of the largest shocks in central Colombia. It has left heavy damage in the capital and its surroundings. In files and libraries across the country is located the information leftby eye witnesses who describe the damages and effects in different populations. Several researchers have used this information to make assumptions on macroseismic intensity, applying the Modified Mercalli Scale, MCSand EMS-92. The intensity values reported are conflicting in many cases, and some give wrong interpretations of the information. In the present work is the re-evaluation using the EMS-98, giving new hypothesis of intensity where the maximum value is assigned to Santa Fe, and it also presents the corresponding map of intensity data.The spatial location of the intensity points shows that the effects left by this earthquake spread through out the Andean Cordillera belt along a linear trend in SW – NE, also coinciding with the trace of the main active faultsat the region.
Keywords: Earthquake, seismic intensity, macroseismic scale EMS-98.
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References
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