Abstract
In urban planning activities, besides a detailed seismic zonation, knowledge of the areal distribution of active faults, and particularly of faults crossing the city in heavily built districts, may be valuable in numerous cases. This chapter aims to identify active faults or fractures in Bucharest, a large city developed over thick layers of Quaternary unconsolidated sediments. To achieve this goal, the research is based on an integrated analysis of all existing relevant data coming from geology, geomorphology, geophysics and seismology. Another purpose is to understand the role of faults in the spatial variability of seismic damaging effects on buildings in view of a better future urban planning. The N–S fault system seems to be involved in neotectonics, affecting the geomorphology between Bucharest and Ploieşti cities. It could represent an active transcrustal fault, the deepest seismic event recorded within Bucharest at subcrustal depth being located on its southern prolongation. Within Bucharest the presence of faults affecting Pleistocene sediments was previously illustrated using borehole data, shallower vertical displacements of Quaternary formations along faults being interpreted in this study. The existing seismic reflection data recorded within Bucharest was used to interpret shallow faults considered as active or capable faults crossing Quaternary sedimentary deposits.
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The authors are indebted to the reviewers for their valuable scientific comments, contributing this way to an improved final version of this paper.
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Ioane, D., Diaconescu, M., Chitea, F., Garbacea, G. (2014). Active Fault Systems and Their Significance for Urban Planning in Bucharest, Romania. In: Bostenaru Dan, M., Armas, I., Goretti, A. (eds) Earthquake Hazard Impact and Urban Planning. Environmental Hazards. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7981-5_2
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