Ambient Noise H/V Spectral Ratios in Estimation of Site Effects along coastal transect from Kakinada to Haldia
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International Journal of Engineering Trends and Technology (IJETT) |  |
| © 2019 by IJETT Journal | ||
| Volume-67 Issue-7 |
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| Year of Publication : 2019 | ||
| Authors : K. Goverdhan , T. Seshunarayana |
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| DOI : 10.14445/22315381/IJETT-V67I7P224 |
Citation
MLA Style: K. Goverdhan , T. Seshunarayana"Ambient Noise H/V Spectral Ratios in Estimation of Site Effects along coastal transect from Kakinada to Haldia" International Journal of Engineering Trends and Technology 67.7 (2019): 124-131.
APA Style:K. Goverdhan , T. Seshunarayana(2019). "Ambient Noise H/V Spectral Ratios in Estimation of Site Effects along coastal transect from Kakinada to Haldia"International Journal of Engineering Trends and Technology, 67(7), 124-131.
Abstract
Local site effect is a crucial component of seismic risk assessment studies. For this, analysis of ambient noise of site is an important tool for estimation of local site effects, which in turn is also influenced by geological composition of the site as it plays a significant role amplifying certain frequencies of ground motion. Thus, in order to estimate the site effects, a study involving identification of critical geological features using satellite imagery and surface geological details was done followed by Horizontal-to-Vertical (H/V) Spectral Ratios (HVSR) with the short duration data in different geological formations, along the transect from Kakinada to Haldia. Of the seventy-three (73) lineaments that were identified, site response analysis was conducted at fifty-one (51) different structural lineaments. Of them, the NW-SE trending major lineaments were identified along the corridor and the study at these lineaments using the ambient noise analysis; fundamental frequency and the corresponding amplification of soils are discussed in this paper. The results of the study summarize the local site effects and probable impact during an earthquake, could be useful for any proposed critical structures in the region.
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Keywords
Ambient noise, H/V spectral ratios, Frequency, Nakumura technique, Amplification