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A Bayesian procedure for Probabilistic Tsunami Hazard Assessment

机译:贝叶斯概率海啸危险性评估程序

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摘要

In this paper, a Bayesian procedure is implemented for the Probability Tsunami Hazard Assessment (PTHA). The approach is general and modular incorporating all significant information relevant for the hazard assessment, such as theoretical and empirical background, analytical or numerical models, instrumental and historical data. The procedure provides the posterior probability distribution that integrates the prior probability distribution based on the physical knowledge of the process and the likelihood based on the historical data. Also, the method deals with aleatory and epistemic uncertainties incorporating in a formal way all sources of relevant uncertainty, from the tsunami generation process to the wave propagation and impact on the coasts. The modular structure of the procedure is flexible and easy to modify and/or update as long as new models and/or information are available. Finally, the procedure is applied to an hypothetical region, Neverland, to clarify the PTHA evaluation in a realistic case.
机译:在本文中,贝叶斯程序用于概率海啸危险评估(PTHA)。该方法是通用的,模块化的,结合了与危害评估有关的所有重要信息,例如理论和经验背景,分析或数值模型,工具和历史数据。该过程提供后验概率分布,该后验概率分布将基于过程的物理知识和历史数据基于可能性的先验概率分布进行整合。此外,该方法还处理了偶然的和认识上的不确定性,从形式上将所有相关不确定性源(从海啸发生过程到海浪传播以及对海岸的影响)都纳入了考虑范围。该程序的模块化结构是灵活的,并且只要有新的模型和/或信息可用,就易于修改和/或更新。最后,将该程序应用于假设区域Neverland,以阐明实际情况下的PTHA评估。

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