在沉积物运输模型中模拟液化诱导的复悬浮流
Zichen Zhu1, Xing Du2, Bingchen Liang3
1First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, PR China.
Water research
|July 11, 2024
概括
这项研究引入了一个新的海洋模型来模拟波浪诱导的海底液化如何影响悬浮沉积物度 (SSC) 和侵蚀. 该模型准确地预测了液化对沿海沉积物动态和水质的影响.
科学领域:
- 地质危险 地质危险
- 海洋学 海洋学 海洋学
- 沿海工程 沿海工程
背景情况:
- 波浪诱导的液化是影响海底稳定性的重大地质危险.
- 悬浮沉积物度 (SSC) 对沉积物动态和海洋水质量至关重要.
- 现有的沉积物模型对液化对SSC的影响没有充分考虑.
研究的目的:
- 开发和验证一种在海洋模型中模拟液化诱导的复悬浮流量的方法.
- 量化液化对SSC和海底侵蚀的影响.
- 为了改善风暴期间沿海沉积物过程的预测.
主要方法:
- 引入了一种新的方法,将液化诱导的重悬浮流体纳入海洋模型.
- 模拟了中国黄河三角洲北部的风暴事件.
- 经验证的模型结果与观测数据 (波浪高度,水位,孔隙压力,SSC) 相比.
主要成果:
- 液化主要发生在水深小于12米的沿海地区,最大水深为1.39米.
- 该模型模拟了液化诱导的最大SSC为1.07kg·m-3,在6-12米深度上占SSC总量的26.2%.
- 风暴期间,海底侵蚀在8-12米深度范围内增加了33.9%.
结论:
- 开发的模型准确地预测了液化及其对SSC及其海底侵蚀的影响.
- 液化显著影响6-12米深度的沿海沉积物动态.
- 该方法在特定条件下适用,例如和,均的海床和中等液化深度.
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