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

were used before values computed from I o * If no Ms, m b , or I o value was
available, the event was not included on the map of large earthquakes.
Conclusions
114
The unified catalogs of hypocenter parameters and intensity compiled for
South America should prove useful for a wide range of studies, particularly
for investigations of earthquake hazard and risk. The seismologists in each
of the participating countries have made a very significant effort and
contribution in reviewing, editing, and supplementing the national catalogs
available to them. As a result, all of the national catalogs are now more
accurate and complete and much documentation has been added concerning the
sources of data, methods of computation, etc. The compilation of the national
catalogs into unified catalogs for all of South America would not have been
possible without the sustained national research efforts in each of the
countries.
The principal benefit of the catalogs is that they form a homogeneous
data base for geophysical investigations of wide scope. The term unifor. is
used here to mean that the data listed In the catalogs have been reviewed in a
systematic manner such that, insofar as possible, the hypocenter, magnitude,
and intensity data listed are consistent for all earthquakes.
An important concept in the compilation of the uniform catalogs is that
all data in the catalogs are referenced. Earthquake data that could not be
referenced were not used in the catalogs. Anyone wishing to review the basis
o!r the inclusion of any particular set of data in the catalog can, therefore,
riview the basic data source from which that data was obtained.
The principal obective of the "Prograi.i for the Mitigation of Earthquake
Effects in the Andean Region (Project Sisra)", under which these catalogs were