沿海水平面上升的过渡性反应是对海平面上升的反应
Amandine L Bosserelle1,2, Leanne K Morgan2
1Department of Civil and Natural Resources Engineering, Faculty of Engineering, University of Canterbury, Christchurch, New Zealand.
Ground water
|May 3, 2025
概括
海平面上升 (SLR) 导致沿海地下水平面上升,可能导致洪水. 现实的SLR预测显示,水平面上升的速度比突发情景慢,这给长期管理带来了挑战.
科学领域:
- 水文地质学 水文地质学
- 沿海过程中的沿海过程.
- 气候变化影响气候变化的影响.
背景情况:
- 沿海含水层面临海平面上升 (SLR) 的风险,盐化已得到充分研究.
- 对于SLR对地下水位上升和潜在的地下水泛滥的影响的了解有限.
研究的目的:
- 为了量化由于各种海平面上升场景和速度而导致的过渡性水表运动.
- 评估不同含水层参数和内陆边界条件对水表反应的影响.
主要方法:
- 使用了可变密度的地下水流量模型.
- 模拟了各种海平面上升场景和速度.
- 检查了固定头部和固定流量内陆边界条件.
主要成果:
- 现实的SLR预测导致水平面上升速度较慢,而不是瞬间或渐进的情景.
- 水平面上升速度小于SLR,随着距离海岸的距离而下降,并且与SLR成比例.
- 固定流量条件呈现出较大且较慢的地下水位上升,表明存在更大的危险.
结论:
- 沿海地下水系统容易受到海平面上升导致的海平面上升的影响,而延迟的反应会给规划带来挑战.
- 固定流量边界条件对地下水位上升构成重大危险,其影响可能会在几十年内展开.
- 排水系统可以减轻平面水位的上升,但地下基础设施的影响需要仔细考虑.
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