Abstract: Abstract We investigate the characteristics of ambient noise across Greece as recorded at the Hellenic Unified Seismic Network (HUSN). Power spectral densities (PSDs) and their corresponding probability density functions (PDFs) have been estimated for 110 broadband seismic stations using the continuous waveform data for a four‐year period from 2007 to 2010. Using PDFs we monitor and show network performance in terms of overall station quality and the level of noise at each site. At high frequencies (>7 Hz), the main source of noise is cultura...
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