1. Seismic hazard for the Trans Adriatic Pipeline (TAP). Part 2: broadband scenarios at the Fier Compressor Station (Albania)
- Author
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Alessandro Vuan, A. Tamaro, Sotiris Sboras, D. Sandron, Luca Moratto, A. Chatzipetros, Dario Civile, Massimo Zecchin, S. Daja, Riccardo Geletti, A. Rebez, S. Pavlides, M. Santulin, Panagiotis Karvelis, F. Zgur, David Zuliani, Dario Slejko, Paolo Fabris, A. Saraò, Costas Papazachos, Riccardo Caputo, J. Garcia-Pelaez, V. Volpi, Dimitra Rapti, Giuliana Rossi, and Silvia Ceramicola
- Subjects
Offset (computer science) ,Ground motion ,Pipeline (computing) ,0211 other engineering and technologies ,Compressor station ,02 engineering and technology ,Active fault ,Induced seismicity ,010502 geochemistry & geophysics ,01 natural sciences ,Trans-Adriatic Pipeline ,PE8_3 ,0105 earth and related environmental sciences ,Civil and Structural Engineering ,021110 strategic, defence & security studies ,Hydrogeology ,DSHA ,Ambientale ,Building and Construction ,PE10_7 ,Geotechnical Engineering and Engineering Geology ,Vertical component ,Near-field ,Geophysics ,Seismic hazard ,Structural geology ,Seismology - Abstract
To ensure environmental and public safety, critical facilities require rigorous seismic hazard analysis to define seismic input for their design. We consider the case of the Trans Adriatic Pipeline (TAP), which is a pipeline that transports natural gas from the Caspian Sea to southern Italy, crossing active faults and areas characterized by high seismicity levels. For this pipeline, we develop a Probabilistic Seismic Hazard Assessment (PSHA) for the broader area, and, for the selected critical sites, we perform deterministic seismic hazard assessment (DSHA), by calculating shaking scenarios that account for the physics of the source, propagation, and site effects. This paper presents a DSHA for a compressor station located at Fier, along the Albanian coastal region. Considering the location of the most hazardous faults in the study site, revealed by the PSHA disaggregation, we model the ground motion for two different scenarios to simulate the worst-case scenario for this compressor station. We compute broadband waveforms for receivers on soft soils by applying specific transfer functions estimated from the available geotechnical data for the Fier area. The simulations reproduce the variability observed in the ground motion recorded in the near-earthquake source. The vertical ground motion is strong for receivers placed above the rupture areas and should not be ignored in seismic designs; furthermore, our vertical simulations reproduce the displacement and the static offset of the ground motion highlighted in recent studies. This observation confirms the importance of the DSHA analysis in defining the expected pipeline damage functions and permanent soil deformations.
- Published
- 2021