ABSTRACT Typhoon Jebi in 2018 caused severe damage along areas of Osaka Bay, Japan. After the storm, a Japan Society of Civil Engineers (JSCE) coastal survey group surveyed the coastal impacts and recorded watermarks inside Osaka Bay and along the Pacific. The maximum storm tide recorded by a tide gauge was 3.29 m at the Osaka Tide Station, which is a historical high for Osaka Bay. Coastal flooding consisted of both storm surge and wave run-up in almost all locations, with flooding exceeding 5 m and 12 m in elevation from mean sea level in the inner parts of Osaka Bay and along the Pacific coast, respectively. Coastal damage was severe in areas located outside of coastal barriers, such as ports and harbors, while residential areas were mainly well protected and spared due to coastal protection systems. In addition, some inland flooding occurred in the Kobe-Ashiya regions due to the storm surge propagating up several small rivers. This survey report summarizes the findings of the post-event survey by JSCE and analyzes the relation between maximum water level and resulting damage.

中文翻译：

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2018年台风飞燕日本关西地区海岸破坏事后调查

摘要 2018 年台风飞燕在日本大阪湾地区造成严重破坏。风暴过后，日本土木工程师协会 (JSCE) 的海岸调查小组调查了大阪湾内和太平洋沿岸的海岸影响并记录了水印。潮位计记录的最大风暴潮在大阪潮汐站为 3.29 m，这是大阪湾的历史最高潮。几乎所有地点的沿海洪水都包括风暴潮和波浪爬高，大阪湾内部和太平洋沿岸的平均海平面高度分别超过 5 m 和 12 m。港口和海港等沿海屏障以外的地区沿海破坏严重，而由于沿海保护系统，居民区主要受到良好保护和幸免。此外，由于风暴潮沿几条小河流传播，神户-芦屋地区发生了一些内陆洪水。本调查报告总结了 JSCE 事后调查的结果，并分析了最高水位与造成的损害之间的关系。