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A platform for research: civil engineering, architecture and urbanism
Deaggregation of seismic hazard for Amaravati capital region in Peninsular India
https://orcid.org/http://orcid.org/0000-0002-3572-0978
This paper presents the deaggregation of seismic hazard analysis for the Amaravati region of Andhra Pradesh, characterized by moderate seismicity in Peninsular India. The past few major earthquakes in the Peninsular Indian region have attracted many researchers to conduct a micro-level seismic hazard analysis. After the bifurcation of Telangana state from Andhra Pradesh in 2014, Amaravati and adjoining localities have been proposed as new capital to the residual state of Andhra Pradesh. Because of the significance of capital, the present study i.e., deaggregation of seismic hazard of the Amaravati region has been carried out. In this study, the complete analysis was carried out in three stages. First, an updated earthquake catalog has been prepared from a radial distance of 500 km keeping Velgapudi as the center. The seismic hazard parameters were estimated considering the earthquake data after declustering. In the second stage of the study, the probabilistic seismic hazard analysis of the Amaravati region has been carried out considering four potential seismic source zones and using the attenuation relation proposed by the national disaster authority of India (2010). The seismic hazard curves representing the cumulative seismic hazard and the uniform hazard spectra subjected to bedrock conditions of the Amaravati region have been developed. The peak horizontal acceleration and spectral acceleration were estimated up to a maximum spectral period of 2.0 s. In the final stage of the study, the seismic hazard results are further deaggregated to understand the relative ground motion of the earthquake sources in terms of magnitude and hypocentral distance. The deaggregation of seismic hazard is shown for 10%, 5%, and 2% probabilities of exceedance in 50 years corresponding to bedrock conditions. Finally, the obtained results were compared with the latest version of IS: 1893 part-1: 2016 (Criteria for earthquake-resistant design of structures), and noticed that the selected study region was being overestimated. The outcomes of this study could significantly help to generate or scale the acceleration time histories for site-specific ground response analysis, insurance agencies for policy-making, and builders for designing the new structures and retrofitting existing structures.
Deaggregation of seismic hazard for Amaravati capital region in Peninsular India
https://orcid.org/http://orcid.org/0000-0002-3572-0978
This paper presents the deaggregation of seismic hazard analysis for the Amaravati region of Andhra Pradesh, characterized by moderate seismicity in Peninsular India. The past few major earthquakes in the Peninsular Indian region have attracted many researchers to conduct a micro-level seismic hazard analysis. After the bifurcation of Telangana state from Andhra Pradesh in 2014, Amaravati and adjoining localities have been proposed as new capital to the residual state of Andhra Pradesh. Because of the significance of capital, the present study i.e., deaggregation of seismic hazard of the Amaravati region has been carried out. In this study, the complete analysis was carried out in three stages. First, an updated earthquake catalog has been prepared from a radial distance of 500 km keeping Velgapudi as the center. The seismic hazard parameters were estimated considering the earthquake data after declustering. In the second stage of the study, the probabilistic seismic hazard analysis of the Amaravati region has been carried out considering four potential seismic source zones and using the attenuation relation proposed by the national disaster authority of India (2010). The seismic hazard curves representing the cumulative seismic hazard and the uniform hazard spectra subjected to bedrock conditions of the Amaravati region have been developed. The peak horizontal acceleration and spectral acceleration were estimated up to a maximum spectral period of 2.0 s. In the final stage of the study, the seismic hazard results are further deaggregated to understand the relative ground motion of the earthquake sources in terms of magnitude and hypocentral distance. The deaggregation of seismic hazard is shown for 10%, 5%, and 2% probabilities of exceedance in 50 years corresponding to bedrock conditions. Finally, the obtained results were compared with the latest version of IS: 1893 part-1: 2016 (Criteria for earthquake-resistant design of structures), and noticed that the selected study region was being overestimated. The outcomes of this study could significantly help to generate or scale the acceleration time histories for site-specific ground response analysis, insurance agencies for policy-making, and builders for designing the new structures and retrofitting existing structures.
Deaggregation of seismic hazard for Amaravati capital region in Peninsular India
https://orcid.org/http://orcid.org/0000-0002-3572-0978
This paper presents the deaggregation of seismic hazard analysis for the Amaravati region of Andhra Pradesh, characterized by moderate seismicity in Peninsular India. The past few major earthquakes in the Peninsular Indian region have attracted many researchers to conduct a micro-level seismic hazard analysis. After the bifurcation of Telangana state from Andhra Pradesh in 2014, Amaravati and adjoining localities have been proposed as new capital to the residual state of Andhra Pradesh. Because of the significance of capital, the present study i.e., deaggregation of seismic hazard of the Amaravati region has been carried out. In this study, the complete analysis was carried out in three stages. First, an updated earthquake catalog has been prepared from a radial distance of 500 km keeping Velgapudi as the center. The seismic hazard parameters were estimated considering the earthquake data after declustering. In the second stage of the study, the probabilistic seismic hazard analysis of the Amaravati region has been carried out considering four potential seismic source zones and using the attenuation relation proposed by the national disaster authority of India (2010). The seismic hazard curves representing the cumulative seismic hazard and the uniform hazard spectra subjected to bedrock conditions of the Amaravati region have been developed. The peak horizontal acceleration and spectral acceleration were estimated up to a maximum spectral period of 2.0 s. In the final stage of the study, the seismic hazard results are further deaggregated to understand the relative ground motion of the earthquake sources in terms of magnitude and hypocentral distance. The deaggregation of seismic hazard is shown for 10%, 5%, and 2% probabilities of exceedance in 50 years corresponding to bedrock conditions. Finally, the obtained results were compared with the latest version of IS: 1893 part-1: 2016 (Criteria for earthquake-resistant design of structures), and noticed that the selected study region was being overestimated. The outcomes of this study could significantly help to generate or scale the acceleration time histories for site-specific ground response analysis, insurance agencies for policy-making, and builders for designing the new structures and retrofitting existing structures.
Deaggregation of seismic hazard for Amaravati capital region in Peninsular India
Asian J Civ Eng
Reddy, M. Madhusudhan (author) / Rao, Ch. Hanumantha (author) / Reddy, K. Rajasekhara (author) / Kumar, G. Kalyan (author)
Asian Journal of Civil Engineering ; 24 ; 1077-1095
2023-06-01
19 pages
Article (Journal)
Electronic Resource
English
Seismic Source Characterization for Amaravati Capital Region, Andhra Pradesh, India
| Springer Verlag | 2021
Regional seismic risk scenarios based on hazard deaggregation
| British Library Conference Proceedings | 2002