Empirical seismic vulnerability, deterministic risk and monetary loss assessment in Fira (Santorini, Greece)

• Published in: Natural hazards (Dordrecht) Vol. 93; no. 3; pp. 1251 - 1275
• Main Authors: Kazantzidou-Firtinidou, D., Kassaras, I., Ganas, A.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.09.2018; Springer Nature B.V
• Subjects: Ambient noise; Architecture; Aseismic buildings; Buildings; Civil Engineering; Damage assessment; Earth and Environmental Science; Earth Sciences; Earthquake damage; Earthquakes; Economic models; Environmental Management; Fault lines; FIRA; GDP; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Gross Domestic Product; Hydrogeology; Natural Hazards; Original Paper; Probability theory; Seismic activity; Seismic hazard; Seismic surveys; Side effects; Volcanic activity; Volcanic islands; Volcanoes; Vulnerability; Greece; Santorini; EMS-98; Seismic risk; Seismic vulnerability; Building typologies; Santorini; Monetary loss; HVSR
• ISSN: 0921-030X; 1573-0840
• DOI: 10.1007/s11069-018-3350-8

A deterministic seismic risk and monetary loss model is presented for the capital of Santorini volcanic Island, the town of Fira, on a building block scale. A local seismic source of M5.6 inferred from a recent volcano unrest in 2011–2012, detailed seismic vulnerability of 435 buildings and site conditions deduced from free-field ambient noise measurements were combined toward assessing the EMS-98 damage grade and its probability to occur. The seismic scenario yielded no damage or slight damage for 84% of the buildings, 16% of the constructions are expected to present moderate-to-heavy damage, while the economic loss amounts to 4 million euros. Although the model predicts low damage and direct economic loss, interaction with the touristic business activities might produce cascade side effects for the economy of the island and consequently Greece’s GDP, an important part of which emanates from Santorini.