@article{10902/21343, year = {2021}, month = {3}, url = {http://hdl.handle.net/10902/21343}, abstract = {ABSTRACT: The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a three-phase project. The first two phases were dedicated to the model development and hazard calculations, following a formalized decision-making process based on a multiple-expert protocol. The third phase was dedicated to documentation and dissemination. The hazard assessment workflow was structured in Steps and Levels. There are four Steps: Step-1) probabilistic earthquake model; Step-2) tsunami generation and modeling in deep water; Step-3) shoaling and inundation; Step-4) hazard aggregation and uncertainty quantification. Each Step includes a different number of Levels. Level-0 always describes the input data; the other Levels describe the intermediate results needed to proceed from one Step to another. Alternative datasets and models were considered in the implementation. The epistemic hazard uncertainty was quantified through an ensemble modeling technique accounting for alternative models' weights and yielding a distribution of hazard curves represented by the mean and various percentiles. Hazard curves were calculated at 2,343 Points of Interest (POI) distributed at an average spacing of ∼20 km. Precalculated probability maps for five maximum inundation heights (MIH) and hazard intensity maps for five average return periods (ARP) were produced from hazard curves. In the entire NEAM Region, MIHs of several meters are rare but not impossible. Considering a 2% probability of exceedance in 50 years (ARP≈2,475 years), the POIs with MIH >5 m are fewer than 1% and are all in the Mediterranean on Libya, Egypt, Cyprus, and Greece coasts. In the North-East Atlantic, POIs with MIH >3 m are on the coasts of Mauritania and Gulf of Cadiz. Overall, 30% of the POIs have MIH >1 m. NEAMTHM18 results and documentation are available through the TSUMAPS-NEAM project website (http://www.tsumaps-neam.eu/), featuring an interactive web mapper. Although the NEAMTHM18 cannot substitute in-depth analyses at local scales, it represents the first action to start local and more detailed hazard and risk assessments and contributes to designing evacuation maps for tsunami early warning.}, publisher = {Frontiers Media}, publisher = {Frontiers in Earth Science March 2021 Volume 8 Article 616594}, title = {The Making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)}, author = {Basili, Roberto and Brizuela, Beatriz and Herrero, Andre and Iqbal, Sarfraz and Lorito, Stefano and Maesano, Francesco Emanuele and Murphy, Shane and Perfetti, Paolo and Romano, Fabrizio and Scala, Antonio and Selva, Jacopo and Taroni, Matteo and Tiberti, Mara Monica and Thio, Hong Kie and Tonini, Roberto and Volpe, Manuela and Glimsdal, Sylfest and Harbit, Carl Bonnevie and Løvholt, Finn and Baptista, María Ana and Carrilho, Fernando and Matias, Luis Manuel and Omira, Rachid and Babeyko, Andrey and Hoechner, Andreas and Gürbüz, Mücahit and Pekcan, Onur and Yalçiner, Ahmet and Canals, Miquel and Lastras, Galderic and Agalos, Apostolos and Papadopoulos, Gerassimos and Triantafyllou, Ioanna and Benchekroun, Sabah and Jaouad, Hedi Agrebi and Abdallah, Samir Ben and Bouallegue, Atef and Hamdi, Hassene and Oueslati, Foued and Amato, Alessandro and Armigliato, Alberto and Behrens, Jörn and Davies, Gareth and Di Bucci, Daniela and Dolce, Mauro and Geist, Eric and Gonzalez Vida, Jose Manuel and González Rodríguez, Ernesto Mauricio and Macias Sanchez, Jorge and Meletti, Carlo and Ozer Sozdinler, Ceren and Pagani, Marco and Parsons, Tom and Polet, Jascha and Power, William and Sørensen, Mathilde and Zaytsev, Andrey}, }