1. TSUNAMI HAZARD: IMPACT OF DATA QUALITY ON A MODELLING AND MAPPING FRAMEWORK
- Author
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Rudy VanDrie, Gede Pringgana, and Ni Nyoman Pujianiki
- Subjects
tsunami ,hazard ,models ,data ,quality ,accuracy ,demnas ,batnas ,anuga ,Oceanography ,GC1-1581 - Abstract
The need to review the impact of tsunamis on the island of Bali and Indonesia as a whole is real and warranted. There are in excess 17,500 island, 275million people and multiple Tsunami sources. The last comprehensive assessment of tsunami risk and hazard for parts of Bali and Padang was completed in 2010 with data since identified as unsuitable in accuracy. Several problems are identified to improve tsunami hazard mapping in Indonesia, such as the role of input data accuracy consistency and density of data, a better description of hazard, and the sensitivity of hazard to input data quality. The research objectives include reviewing multiple data sets, undertaking tsunami impact modeling, and developing a data quality metric. Further there is consideration of a future framework approach to enable a nationwide roll-out of modelling on the basis the metric identifying the availability of improved quality of data. Strongly related to this is the ongoing development and review of the Indonesian BATNAS and DEMNAS data. It is recommended that version metadata be developed for the evolving data sets in time. Noting that ongoing improvement in this data is a strong candidate to trigger the need to update Tsunami Modelling and Mapping in Indonesia, either as a whole, or in specific areas as it becomes available.
- Published
- 2023