Background noise properties at the IBERARRAY broadband seismic network

The characteristics of the background seismic noise recorded at the IberArray broadband seismic network have been analyzed using power spectral density (PSD) estimates and their corresponding probability density functions (PDFs) for the whole data set (up to 55 stations continuously recording since summer 2007). These PDFs provide a useful tool for managing the network as they allow identifying stations with anomalous high noise levels, but also allow investigating the major sources of noise at different frequency bands and the seismic background noise variations related to time of day, season, weather, location and type of installation.