Li Sida, Wahl Thomas, Talke Stefan A, Jay David A, Orton Philip M, Liang Xinghui, Wang Guocheng, Liu Lintao
State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Sci Adv. 2021 Mar 5;7(10). doi: 10.1126/sciadv.abe2412. Print 2021 Mar.
Nuisance flooding (NF) is defined as minor, nondestructive flooding that causes substantial, accumulating socioeconomic impacts to coastal communities. While sea-level rise is the main driver for the observed increase in NF events in the United States, we show here that secular changes in tides also contribute. An analysis of 40 tidal gauge records from U.S. coasts finds that, at 18 locations, NF increased due to tidal amplification, while decreases in tidal range suppressed NF at 11 locations. Estuaries show the largest changes in NF attributable to tide changes, and these can often be traced to anthropogenic alterations. Limited long-term measurements from estuaries suggest that the effects of evolving tides are more widespread than the locations considered here. The total number of NF days caused by tidal changes has increased at an exponential rate since 1950, adding ~27% to the total number of NF events observed in 2019 across locations with tidal amplification.
滋扰性洪水（NF）被定义为轻微的、非破坏性的洪水，它会给沿海社区带来重大的、累积的社会经济影响。虽然海平面上升是美国观察到的NF事件增加的主要驱动因素，但我们在此表明，潮汐的长期变化也有影响。对美国海岸40个潮汐测量记录的分析发现，在18个地点，由于潮汐放大，NF增加，而在11个地点，潮汐范围的减小抑制了NF。河口显示出由于潮汐变化导致的NF最大变化，这些变化通常可追溯到人为改变。河口有限的长期测量表明，不断变化的潮汐的影响比这里考虑的地点更广泛。自1950年以来，由潮汐变化引起的NF天数以指数速率增加，在有潮汐放大的地点，这使得2019年观察到的NF事件总数增加了约27%。
