In order to monitor the ongoing seismicity in different seismically active regions of India, 300 state of the art digital strong ground motion accelerographs have been installed. To estimate site effects HVSR technique is used for 27 strong motion stations of Himachal Pradesh. In the present study, The Fourier response spectra are calculated for each component (North-South, East-West and Vertical). The horizontal to vertical spectral ratio curve (H/V ratio) was estimated using Nakamura formula. The data is processed by using “SeismoSignal” 2016 software. Along with H/V ratio the parameters can be estimated like Maximum Acceleration, Maximum Velocity and Maximum displacement. The Software gives the results based on PGA, PGV, PGD and results of ground motion parameters is obtained by considering maximum value and then by using a correction window of 5.12 seconds and then plotting it on elastic/inelastic curves by considering 5% damping. Maximum H/V spectra value is obtained for each strong motion stations. The Predominant frequency and Amplification factor for each strong motion station is obtained from H/V curve.
HVSR, Seismosignal, Predominant frequency, Amplification factor
Manish Srivastava "Regional Site Characterization by HVSR Technique Using the Archived Strong Motion Data of Earthquake Prone Areas" Iconic Research And Engineering Journals Volume 4 Issue 3 2020 Page 74-82
Manish Srivastava "Regional Site Characterization by HVSR Technique Using the Archived Strong Motion Data of Earthquake Prone Areas" Iconic Research And Engineering Journals, 4(3)