The 2018 Sulawesi tsunami caused widespread impacts in Palu City, Indonesia, including to components of infrastructure lifeline networks. Lifeline networks are key to the operation of society and are particularly crucial during post-disaster relief and recovery efforts. Understanding their vulnerability to tsunami hazards is important for disaster risk reduction, but is an understudied topic. This study uses field survey and remotely sensed data to develop a single dataset, used to create tsunami fragility functions for road and utility pole assets in Palu. Tsunami inundation depths were estimated at component locations from a spatial interpolation of field measured flow depths and wave run-up. Component attributes and geometries exposed to tsunami inundation were compiled from both field surveys and remote sensing on satellite imagery and ‘street view’ imagery, which included component construction material, capacity (roads) and height (poles). Roads demonstrate a 0.16 probability of exceeding complete damage at 2 m inundation depth, while utility poles see a 0.47 probability. The probability of exceeding complete damage at 2 m inundation depth for concrete, asphalt, collector and local roads is 0.34, 0.17, 0.19 and 0.13 respectively, and for concrete, steel, steel < 5 m height and steel > 5 m height utility poles is 0.42, 0.48, 0.49 and 0.47 respectively. When comparing the synthesised tsunami fragility functions to those from other global events, Palu roads were more vulnerable at 2 m inundation depth (0.16) compared to roads exposed to the 2011 Tohoku tsunami in Japan (0.06) and 2015 Illapel tsunami in Chile (0.05).

中文翻译：

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使用实地调查和 2018 年印度尼西亚帕卢苏拉威西海啸的遥感数据的道路和电线杆资产的海啸脆弱性函数

2018 年苏拉威西海啸对印度尼西亚帕卢市造成了广泛影响，包括基础设施生命线网络的组成部分。生命线网络是社会运作的关键，在灾后救援和恢复工作中尤为重要。了解他们对海啸灾害的脆弱性对于减少灾害风险很重要，但这是一个研究不足的话题。本研究使用实地调查和遥感数据来开发单一数据集，用于为帕卢的道路和电线杆资产创建海啸脆弱性函数。海啸淹没深度是根据现场测量的水流深度和波浪爬高的空间插值在组件位置估计的。暴露于海啸淹没的组件属性和几何形状是根据卫星图像和“街景”图像的实地调查和遥感编制的，其中包括组件建筑材料、容量（道路）和高度（极点）。道路在 2 m 淹没深度处超过完全损坏的概率为 0.16，而电线杆的概率为 0.47。混凝土、沥青、集电器和地方道路在 2 m 淹没深度超过完全损坏的概率分别为 0.34、0.17、0.19 和 0.13，对于混凝土、钢、钢 < 5 m 高度和钢 > 5 m 高度的电线杆为分别为 0.42、0.48、0.49 和 0.47。将合成的海啸脆弱性函数与其他全球事件的脆弱性函数进行比较时，帕卢道路在 2 m 淹没深度 (0.