Detection of Background Seismic Noise on Selected Digital Broadband Network Stations:Tarutung Earthquake

An assessment of the ambient seismic noise for four broadband GFZ stations is presented. However, the earthquake monitoring and detection purposes in the Northern Sumatra vicinity are crucial to know the seismic ambient noise tiers certified by way of a community of seismic stations. In this case, we used the Power Spectral Density and Probability Density Function (PSDPDF) methods to computed using waveform records from January 2019 for nine days and allows the use of data diseased with Tarutung earthquake with Magnitude 4.8 befell on 15 January 2019 when an excessive noise stage is observed. Based on the result, the noise at GSI station has low strength than BKNI, MNAI and PMBI station while the probability will increase at excessive frequencies. The cultural noise in human undertaking generates some noise and variability at lengthy periods is generally certified for earthquake signals process.