Investigation of Ambient Noise Levels in the Adana Basin and its Surroundings, Southern Turkey

Abstract

We investigate the characteristics of background seismic noise levels in the Adana basin and its surroundings (Southern Turkey) by using seventeen broadband velocity seismometers operated by Kandilli Observatory Earthquake Research Institute (KOERI) of Bosphorus University and Earthquake Research Department (ERD) of Disaster and Emergency Management Presidency of Turkey. The probability density functions of power spectral densities are calculated and their mode values are mapped to observe the spatial variations in day and night times. We observe that the calculated noise levels are coherent in general with the low- and high-noise models of the Earth. We also show an example where noise levels change as a function of period in seasonal basis.