Probabilistic Tsunami Hazard Assessment 2018

Abstract This dataset provides a small sample of results from the[ 2018 Australian Probabilistic Tsunami Hazard Assessment]. It shows tsunami water levels (above the background sea level) with an exceedance rate of 1 in 1,000 at coastal points offshore of Australia, where water depths exceed 40 metres. Epistemic uncertainties (caused by the uncertain frequency of large earthquakes) are illustrated by providing results for both the logic-tree-mean and the 84th percentile. Many other products from this study are available via the [GitHub Code Interface] which also provides information on using the study for hazard assessment. Currency Date Published: 02 November 2018 Modification Frequency: As Needed Data Extent Spatial Extent North: -8.38° South: -68.9° East: 45.3° West: 169° Source Information Catalogue Entry: [2018 Australian Probabilistic Tsunami Hazard Assessment Results] Lineage Statement This data was generated using the 2018 Australian Probabilistic Tsunami Hazard Assessment outputs. The methodology used is described [here], the associated code is available [here] and the particular script that generated this data is located [here]. The Digital Atlas of Australia's Data Team converted the output CSV file into a Feature Service (Hosted), using the "XY to Point" Geoprocessing Tool in ArcGIS Pro, before then publishing it into the Digital Atlas. Data Dictionary ──────────────────────────────────────────────────┬─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Attribute name │Description ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Longitude │Longitude. ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Latitude │Latitude. ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Elevation │Sea-bed elevation relative to mean sea level (with negative values below sea level). ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Gauge ID │Unique ID for each Gauge. ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Stochastic Slip Stage Logic Tree Mean - 1 in 1,000│The tsunami maximum water level (above the background sea level) with an exceedance rate of 1/1000 according to the logic-tree-mean epistemic uncertainty model, using PTHA18's heterogeneous slip earthquake scenarios with constant rigidity. ──────────────────────────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Stochastic Slip Stage 84th Percentile - 1 in 1,000│The tsunami maximum water level (above the background sea level) with an exceedance rate of 1/1000 according to the 84th percentile epistemic uncertainty model, using PTHA18's heterogeneous slip earthquake scenarios with constant rigidity. ──────────────────────────────────────────────────┴─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Contact Manager Client Services, [clientservices@ga.gov.au]