Earthquakes and Structures

Volume 28, Number 6, 2025, pages 459-468

DOI: 10.12989/eas.2025.28.6.459

Completeness analysis of earthquake catalogue and seismic parameter of selected region of Prayagraj

Bhukya Naresh, Kumar Venkatesh and Laxmi Kant Mishra

Abstract

In the construction of resilience structures Seismic hazard analysis is one of the important study in predicting an earthquake. The proper earthquake prediction depends on proper catalogue data, which can give the proper seismic parameters. This paper also describes the declustering of earthquake data to perform completeness some of the 708 earthquake events are used to perform declustering and completeness analysis. The earthquake catalogue data of 110 years, from 1900 to 2019 has been collected through recognized data centers. This data has been subdivided into five groups with respect to their earthquake magnitudes of every decade. This paper describes how to analyze the data required to estimate the seismic parameter b- value of the selected region Prayagraj. A statistical completeness analysis has been carried out using two methods Stepp's and CUVI methods. After performing completeness seismic parameter of the region b-value has been estimated. After finishing the completeness by to find the b-value of selected region and obtained 0.76 and 0.78 by using Stepp's and CUVI methods respectively.

Key Words

aftershocks; completeness; declustering; earthquake magnitude

Address

Bhukya Naresh: Department of Civil Engineering, J. B. Institute of Engineering and Technology, Hyderabad, India Kumar Venkatesh and Laxmi Kant Mishra: Department of Civil Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, India