General overview

Here is a brief description of the steps that form the workflow. More detailed explanations are available on the corresponding dedicated pages.

STEP 1 - Selection of the POI(s) → aimed at selecting, from the NEAMTHM18 database, the offshore Point(s) of Interest in front of the target site, using the extension of the local grid or the coordinates of the site of interest or directly the labels of the desired POIs, if known (the options are mutually exclusive).

STEP 2 - Scenario Dumping → aimed at extracting, from the NEAMTHM18 database, all of the earthquake scenarios and corresponding metadata that contribute to the tsunami hazard at the target site.

STEP 3 - Scenario Selection → aimed at selecting, from the dumped scenarios, a number of relevant scenarios significantly contributing to the tsunami hazard at the target site. Presently, the implemented procedure is a disaggregation from the total hazard, based on the mean model of the epistemic uncertainty. In the future, other approaches will be implemented, such as the importance sampling.

STEP 4 - Scenario Annual Rates → aimed at retrieving the annual rates of occurrence, including the epistemic uncertainty, for the ensemble of scenarios obtained from the selection procedure.

STEP 5 - Tsunami Simulations → aimed at setting up and executing, for each scenario, the high-resolution numerical simulations of the tsunami inundation on telescopic nested grids, using the Tsunami-HySEA numerical code.

STEP 6 - Hazard aggregation → aimed at combining the tsunami amplitude computed through the numerical simulations with the scenario rates, in order to calculate the hazard curves on a predefined set of MIH (Maximum Inundation Height) thresholds.

STEP 7 - Visualization → aimed at producing hazard and inundation maps for selected average return periods (ARPs) for visualization, as well as exporting the hazard curves as csv tables for distribution.