The GTM started as a self-convened group of tsunami scientists affiliated to research, academic and private organizations around the world to focus efforts and provide coordinate action for tsunami hazard and risk assessment.

History
Over the past ten years, participant organizations have been working together toward a science-based understanding of tsunami hazard and risk and the development of standards and methods accepted by the tsunami community. Several other individuals and organizations are presently collaborating on GTM activities.
On September 26, 2024, the Global Tsunami Model (GTM) Association was formally established with the signing of the Articles of Association by 18 tsunami scientists from 14 different science organisations in Croatia, Italy, France, Germany, Norway, Portugal, Spain, Turkiye, and the UK.
The inaugurational assembly elected a board, consisting of J. Behrens (Chair, Germany), A. Rudloff (Treasurer, Germany), F. Løvholt (Rapporteur, Norway), Fatemeh Jalayer (Deputy Chair, UK), S. Lorito (Member, Italy). Next steps in establishing proper procedures and refining a business model for the GTM were discussed.
The GTM Association was formally registered as a German e.V. on August 1st, 2025.

Founding Members of Global Tsunami Model (GTM) Association ( Photo: J. Behrens/UHH)
AGITHAR
AGITHAR - Accelerating Global science In Tsunami Hazard and Risk analysis - was the primary forum for shaping GTM since 2019
AGITHAR
- is a scientific networking project based in Europe
- produces state-of-the-art documents (published as scientific papers)
- produces the tsunami 'cookbook' outlining the 'how-to' in tsunami hazard and risk (in final review)
- formalizes GTM through the COST innovation Grant framework ‘Sustaining AGITHAR - building a Global Tsunami Model Association’

AGITHAR General Assembly in Malaga 2022
Supportive organisations
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