Historic ANSS Composite Catalog Search

Long Business Description

The ANSS (Advanced National Seismic System) Composite Catalog is a world-wide earthquake catalog created by merging the master earthquake catalogs from contributing ANSS institutions and then removing duplicate solutions for the same event. The ANSS Composite Earthquake Catalog grew out of the efforts of the CNSS (Council of the National Seismic System). It was previously called the CNSS Earthquake Catalog.

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