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Authors: Gomez Capera, A. A.* 
Leschiutta, I.* 
Title: Determining the parameters of earthquake sources in south america from macroseismicintensity data (ceresis database).
Issue Date: Dec-2004
Series/Report no.: Volume 8, N° 1
Keywords: Earthquake source parameters
Intensity data points
Parametrization techniques
South America
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology 
Abstract: In the past decades many different procedures to handle with the historical data for the determination of the earthquake source parameters have been made. This has been only possible dealing with historical data interpreted and compiled as Intensity Data Points (IDP). One of the most interesting tools is the Boxer algorithm, a parameterisation method which computes the parameters of the earthquake source in terms of latitude and longitude of the epicentre, magnitude of the event, length, width and azimuth of the box, which represent the surface projection of the seismogenic source. We have used intensity data points available from the CERESIS database (earthquakes with I0≥8MM) to obtain a preliminary idea of the possible sources of some historical earthquakes of the South-American region. At a first approach to the South American historical seismicity we generally can affirm that our results agree fairly well with seismological data and geological background as reported in literature.
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