ABSTRACT A post-event survey of the coastal impacts of Typhoon Hagibis was conducted in the Greater Tokyo and Shizuoka areas. The typhoon’s intensive landfall generated the highest-level storm surges recorded in the study area with a maximum sea-level anomaly of nearly 2 m at the head of Tokyo Bay. Highly populated coastal areas in the inner sheltered part of Tokyo Bay were subject to only minor damage partially because the peak storm surge occurred during a low spring tide. High water levels along the coastline facing the Pacific Ocean mostly measured 4–8 m above the mean sea level, the exception being the Seisho coast, where extreme wave runup reached over 10 m above the mean sea level. The high water levels predominantly caused by energetic swells were comparable with the crest heights of defense structures in a broad range of the study area. The intensive typhoon did not trigger catastrophic flood damage, but caused minor flooding due to wave overtopping, and there was substantial damage to coastal infrastructures along the coast. This paper presents both an overview of and detailed information regarding the coastal impacts of the intensive typhoon along the highly altered coastline with complex geometry.

中文翻译：

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超级台风海贝思对日本大东京和静冈地区的沿海影响

摘要 在大东京和静冈地区对台风海贝思的沿海影响进行了事后调查。台风的强烈登陆产生了研究区有记录以来最高级别的风暴潮，东京湾头部的最大海平面距平近2 m。东京湾内部避风区人口稠密的沿海地区仅受到轻微破坏，部分原因是风暴潮高峰发生在低潮期间。面向太平洋的海岸线沿线的高水位大多比平均海平面高 4-8 m，但 Seisho 海岸例外，那里的极端波浪爬高达到了比平均海平面高 10 m 的位置。主要由高能涌浪引起的高水位与研究区域广泛范围内防御结构的波峰高度相当。强台风并未引发特大洪水灾害，但因海浪漫顶造成轻微洪水，对沿岸基础设施造成较大破坏。本文概述了强台风对沿具有复杂几何形状的高度变化的海岸线的沿海影响的概述和详细信息。