Utilization of microtremor measurements to evaluate fundamental frequency in urban settlement of Taxila-Pakistan
Utilization of microtremor measurements to evaluate fundamental frequency in urban settlement of Taxila-Pakistan
- Author(s): S.M.T. Qadri ; M.A. Islam ; B. Nawaz ; K. Rehman
- DOI: 10.1049/cp.2018.1608
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- Author(s): S.M.T. Qadri ; M.A. Islam ; B. Nawaz ; K. Rehman Source: 7th Brunei International Conference on Engineering and Technology 2018 (BICET 2018), 2018 page (4 pp.)
- Conference: 7th Brunei International Conference on Engineering and Technology 2018 (BICET 2018)
- DOI: 10.1049/cp.2018.1608
- ISBN: 978-1-83953-002-9
- Location: Bandar Seri Begawan, Brunei
- Conference date: 12-14 Nov. 2018
- Format: PDF
The present study has been conducted on Taxila, Pakistan to understand its local geology and its suspected contribution to disaster during a seismic event. The Nakamura technique was applied to estimate fundamental frequency f0, spectral ratio amplitude A0, and alluvium thickness H along 16 selected sites in the study area. The estimated values for fundamental frequency f0 lie between 0.7 and 11.3 Hz, spectral ratio amplitude A0 ranges between 1.02 and 3.9 and the alluvium thickness H ranges between 2.91 and 216.79 meters.ARC GIS maps were also designed to show the spatial extent of the site response parameters. The results were then correlated with borehole data to enhance the credibility of the result. The results inferred through the study indicated that the study area exhibits an overall low fundamental frequency f0 thus reflecting greater alluvium thickness H and consequently high susceptibility to damage amplification by local site effects.
Inspec keywords: geology; disasters; seismology; earthquakes; geographic information systems; geophysical techniques; seismic waves
Subjects: Seismic sources; Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research; Data and information; acquisition, processing, storage and dissemination in geophysics; Seismic waves; Asia
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