Contribution to the Seismic Hazard Assessment in Northeastern Algeria
| dc.contributor.author | BOUDEBOUDA, Afaf | |
| dc.date.accessioned | 2025-07-13T12:49:46Z | |
| dc.date.available | 2025-07-13T12:49:46Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | The northeastern region of Algeria is renowned for its significant seismic activity within the North African context. The high seismicity rate in this area generates a considerable earthquake hazard. According to the national seismic zoning map of RPA, the northeastern region of Algeria falls within zones I and II, characterized by low to moderate seismicity. However, even earthquakes of relatively low magnitude can cause significant damage, particularly when buildings are of poor quality. Considering recent strong events, the inadequacy of the RPA zoning map to accommodate large events in the region is evident. Consequently, a reliable seismic hazard assessment, accounting for recent dvancements in the field, is imperative to enhance building design and effectively mitigate seismic risk within this area. This thesis aims to improve the seismic hazard assessment in northeastern Algeria by incorporating new data, seismic source considerations, ground motion predictions, and thoroughly addressing inherent uncertainties. A significant contribution of this work is the development of a new seismic catalog, which serves as a foundational element for seismic hazard analysis. The catalog is refined through advanced techniques and clear criteria. We established a unified moment magnitude catalog using local scaling relationships between different magnitude measures and moment magnitude. The catalog prepared in this study will be useful for various seismological applications, including seismic hazard assessment, preparation of ground motion prediction equations (GMPE), seismicity, seismotectonics, and earthquake prediction in the study area. The hazard distribution was quantified in terms of Peak Ground Acceleration (PGA) and spectral accelerations for different periods. To evaluate the PGA, the REASSESS V2.0 software was used for single and multi-site Probabilistic Seismic Hazard Analysis (PSHA) in the area under study. The PSHA was performed using a standard logic tree methodology, allowing for a systematic consideration of model-based uncertainties and their effects on the estimated ground motion parameters. These ismic hazard maps are valuable tools for future risk assessments of structures in the specified regions. | |
| dc.format | ||
| dc.identifier.uri | https://dspace.univ-annaba.dz//handle/123456789/4019 | |
| dc.language.iso | en | |
| dc.publisher | Université Badji Mokhtar Annaba | |
| dc.subject | northeast algeria; seismic activity; seismic hazard; seismic catalog; probabilistic seismic hazard analysis; peak ground acceleration; logic tree | |
| dc.title | Contribution to the Seismic Hazard Assessment in Northeastern Algeria | |
| dc.type | Thesis |