Modern tsunami events have highlighted the vulnerability of port structures to these high-impact but infrequent occurrences. However, port planning rarely includes adaptation measures to address tsunami hazards. The 2011 Tohoku tsunami presented us with an opportunity to characterise the vulnerability of port industries to tsunami impacts. Here, we provide a spatial assessment and photographic interpretation of freely available data sources. Approximately 5000 port structures were assessed for damage and stored in a database. Using the newly developed damage database, tsunami damage is quantified statistically for the first time, through the development of damage fragility functions for eight common port industries. In contrast to tsunami damage fragility functions produced for buildings from an existing damage database, our fragility functions showed higher prediction accuracies (up to 75 % accuracy). Pre-tsunami earthquake damage was also assessed in this study and was found to influence overall damage assessment. The damage database and fragility functions for port industries can inform structural improvements and mitigation plans for ports against future events.

中文翻译：

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海啸对港口的破坏：编目破坏以创建 2011 年东北事件的脆弱性函数

现代海啸事件凸显了港口结构对这些高影响但不常发生的事件的脆弱性。然而，港口规划很少包括应对海啸灾害的适应措施。2011 年的东北海啸为我们提供了一个机会来描述港口工业对海啸影响的脆弱性。在这里，我们提供免费可用数据源的空间评估和摄影解释。对大约 5000 个港口结构进行了损坏评估并存储在数据库中。使用新开发的损害数据库，通过开发八个常见港口行业的损害脆弱性函数，首次对海啸损害进行了统计量化。与从现有损害数据库中为建筑物生成的海啸损害脆弱性函数相比，我们的脆弱性函数显示出更高的预测准确度（准确度高达 75%）。本研究还评估了海啸前的地震破坏，发现它会影响整体破坏评估。港口行业的损害数据库和脆弱性功能可以为港口的结构改进和缓解计划提供信息，以应对未来事件。