catalogo de terremotos para america del sur catalog of earthquakes ...

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It may often be the case that an event with an epicenter in one country
may have intensity reports in neighboring countries. In such situations, the
event is included in the intensity catalog for the country in which the
epicenter is located, and intensity observations from otheo countries are
included in the same place. The two-letter country code included with each
location wan added t.o identify the country in which the intensity occurred.
Observa, wn roy a given location may be included more than once if more than
one country included those observations. Many events from the Caribbean area
were feit in Venezuela. Since no intensity catalog has been compilid for the
Caribbean area, these events were left in the Venezuela intensity catalog.
The 'ntensity catalog includes space in the location records for
elevation, epicentral distance, hypocentral distance, and azimuth in order to
Facilitate analysis of intensity attenuation. The evaluation of these
parameters varied significantly among countries. If the data were not
cmpletcd by the individual countries, no further effort has been made to
complete the data. If epicenters are reevaluated most of these data would
have to be reevaluated. Thi' has been left as a possible future refinement of
the catalog.
Maps
Epicenter maps were produced from the data in the hypocenter catalog.
Two maps were produced: one with all events plotted, and one with events of
M, magnitude grnater than or equal to 6.5. The events were grouped into three
S!," P,.aC3 following the categories defined by Gutenberg and Richter (1954)
1hch are as follows: