论文标题
评估海平面上升对理想化和Neretva河河口盐对外侵入的影响
Assessment of Sea-Level Rise Impacts on Salt-Wedge Intrusion in Idealized and Neretva River Estuary
论文作者
论文摘要
了解河口对海平面上升的反应对于制定适当的缓解和气候变化适应策略至关重要。这项研究调查了海平面上升对盐 - 韦奇河口盐度侵入的影响。使用源自两层液压理论的简单表达式在理想化的河口中评估了海平面的上升影响，并在克罗地亚的Neretva River河口使用两层依赖时间依赖的模型来评估。该评估基于三个指标 - 盐 - 韦奇侵入长度，海水体积以及河流流入恢复基线侵入所需的流入。发现潜在的SLR增加了所有三个考虑的指标。理想化河口中的理论分析表明，较浅的河口对SLR更敏感。 NERETVA河河口的数值结果表明，SLR可能会增加盐 - 韦奇的入侵长度，体积和矫正河流流入。但是，由于通道的几何形状，尤其是对于较低的河流流入，结果是高度非线性的。因此，还讨论了对限制潜在入侵的频道床斜率影响的理论评估。这一发现强调了在评估SLR影响时使用几种不同指标的必要性。
Understanding the response of estuaries to sea-level rise is crucial in developing a suitable mitigation and climate change adaptation strategy. This study investigates the impacts of rising sea levels on salinity intrusion in salt-wedge estuaries. The sea-level rise impacts are assessed in idealized estuaries using simple expressions derived from a two-layer hydraulic theory, and in the Neretva River Estuary in Croatia using a two-layer time-dependent model. The assessment is based on three indicators - the salt-wedge intrusion length, the seawater volume, and the river inflows needed to restore the baseline intrusion. The potential SLR was found to increase all three considered indicators. Theoretical analysis in idealized estuaries suggests that shallower estuaries are more sensitive to SLR. Numerical results for the Neretva River Estuary showed that SLR may increase salt-wedge intrusion length, volume, and corrective river inflow. However, the results are highly non-linear because of the channel geometry, especially for lower river inflows. A theoretical assessment of channel bed slope impacts on limiting a potential intrusion is therefore additionally discussed. This findings emphasize the need to use several different indicators when assessing SLR impacts.
