| Title |
Effects of P-SV wave propagation on ground motion characteristics due to variation in subsurface basement topography |
| ID_Doc |
42212 |
| Authors |
Kumar, V; Narayan, JP; Khatri, V; Kumar, N; Kamal |
| Title |
Effects of P-SV wave propagation on ground motion characteristics due to variation in subsurface basement topography |
| Year |
2021 |
| Published |
Journal Of Indian Geophysical Union, 25, 1 |
| Abstract |
In Indian metro cities like Bangalore, Delhi, and Mumbai etc, the rapid growth of the population made the realty developers to construct housing complexes, high rise commercial and residential structures at locales like sites close to the river beds and lakes. The expansion of these metropolises has pressurized builders to fill many lakes and terrains with loose soil, resulting land reclamation as a regular practice. These reclaimed lands, pose a grave threat to the human life and damage of structures during an earthquake, as subsurface basement topography (SSBT) can play a major role. In order to document the seismic response, we studied the effects of depth of SSBT on ground motion characteristics in both the quantitative and qualitative manners. The numerically computed P-SV-wave of various 2D SSBT models (bounded) is shown in this paper. The investigation of simulated results revealed a major alteration in ground motion and generation of new seismic phases. The curves for average spectral amplification are not symmetrical and smooth. These outcomes represent that consideration of depth of SSBT impact is very significant in seismic hazard analysis for the development of smart city. This study provides a way to differentiate between a risky and safe construction site in relative terms and can be utilized as a guide in earthquake readiness. |
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