Model-based tsunami warnings derived from observed impacts
Model-based tsunami warnings derived from observed impacts
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DOI：
10.5194/nhess-10-2631-2010
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发表时间：
2010-01-01
影响因子：
4.6
通讯作者：
Greenslade, D. J. M.
中科院分区：
文献类型：
--
作者：
Allen, S. C. R.;Greenslade, D. J. M.
澳大利亚联合海啸警报中心使用T2海啸情景数据库，为澳大利亚大陆海岸线及其外部领土的潜在海啸威胁提供预报指导。本研究描述了一种方法，从T2情景数据库获得的模型数据生成沿海海啸警报。考虑到观察到的9个过去事件的沿海影响，导致正在设计的回顾性或“理想”的预警计划。在指定的海岸带内的最大振幅的第95百分位值进行检查和阈值，产生最佳匹配的理想方案进行选择。这种经验方法是基于影响的，并允许T2情景被用作对海岸的潜在影响的代理，以产生澳大利亚地区的警告。
The Joint Australian Tsunami Warning Centre uses the T2 tsunami scenario database to provide forecast guidance for potential tsunami threats to the coastlines of mainland Australia and its external territories. This study describes a method for generating coastal tsunami warnings from model data obtained from the T2 scenario database. Consideration of observed coastal impacts for nine past events leads to retrospective or "ideal" warning schemes being designed. The 95th percentile values of maximum amplitude within designated coastal zones are examined and thresholds that produce the best match for the ideal schemes are selected. This empirical method is impact-based and allows the T2 scenarios to be used as a proxy for potential impacts on the coast in order to generate warnings for the Australian region.