Understanding the impact of sea level rise on coastal areas is crucial as a large percentage of the population live on the coast. This study uses computational tools to examine how two major consequences of sea level rise: salt intrusion and an increase in water volume affect the hydrodynamics and flooding areas of a major estuary in the Iberian Peninsula. A 2D numerical model created with the software MOHID was used to simulate the Guadiana Estuary in different scenarios of sea level rise combined with different freshwater flow rates considering varying tidal amplitudes. An increase in salinity was found in response to an increase in mean sea level in both high and low freshwater flow rates at all areas around the estuary. An increase in flooding areas around the estuary was also positively correlated with an increase in mean sea level.

了解海平面上升对沿海地区的影响至关重要，因为很大一部分人口生活在沿海地区。这项研究使用计算工具来检验海平面上升的两个主要后果：盐分入侵和水量增加如何影响伊比利亚半岛主要河口的水动力和洪水区域。使用由MOHID软件创建的2D数值模型来模拟瓜迪亚纳河口在海平面上升的不同情况下，结合不同的潮汐振幅，结合不同的淡水流速。在河口周围所有区域，淡水流量的高低均与平均海平面的增加有关，盐度增加。河口周围洪灾面积的增加也与平均海平面的增加呈正相关。