Investigating the earthquake catalog of the National Observatory of Athens

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Abstract

The earthquake catalog of the National Observatory of Athens (NOA) since the beginning of the Greek National Seismological Network development in 1964, is compiled and analyzed in this study. The b-value and the spatial and temporal variability of the magnitude of completeness of the catalog is determined together with the times of significant seismicity rate changes. It is well known that man made inhomogeneities and artifacts exist in earthquake catalogs that are produced by changing seismological networks and in this study the chronological order of periods of network expansion, instrumental upgrades and practice and procedures changes at NOA are reported. The earthquake catalog of NOA is the most detailed data set available for the Greek area and the results of this study may be employed for the selection of trustworthy parts of the data in earthquake prediction research.

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Chouliaras, G. (2009). Investigating the earthquake catalog of the National Observatory of Athens. Natural Hazards and Earth System Science, 9(3), 905–912. https://doi.org/10.5194/nhess-9-905-2009

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