Hazard Working group
Presently, the main emphasis for this group is to set up the next probabilistic global tsunami hazard model, as well as providing local workflows for conveying the global information to local scale.
The Global Probabilistic Tsunami Hazard Model from earthquake sources starts from the current version of the model (Davies et al. 2018), the hazard working group has the following initial focus (more details on the global model are given here:)
- Improved earthquake source models, with variable source area and depth dependent subduction properties.
- Improved source model, including effects of horizontal deformation on the tsunami generation.
- More efficient tsunami propagation model using Tsunami-HySEA
- Improved coastal coverage and inclusion of small islands globallhy
- Interoperable output for risk analysis, including integration with GEMs OpenQuake model
Linked to the sources provided through the global model, GTM offers competence and workflows utilising High Performance Computing (HPC) to simulate the local tsunami hazard at high resolution. A workflow for this so-called Local Probabilistic Tsunami Hazard Analysis (PTHA) is depicted in the image below. Tsunami inundation hazard maps can now be generated through the simulation of tens of thousands of scenarios at high spatial resolution, something that was not possible even 10-15 years ago. GTM can set up the execution and interpretation of local the PTHA, which should utilize high resolution local topography and bathymetry datasets. More detail about this service is given here
