塞瓦斯托波尔湾水污染传播模拟

IF 0.7 Q4 OCEANOGRAPHY
V. Belokopytov, A. Kubryakov, S. F. Pryakhina
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引用次数: 8

摘要

介绍跟踪各种污染物的扩散,制定控制沉船排放的操作系统,是海洋环境监测的重要任务之一。根据塞瓦斯托波尔湾水循环的诊断计算,对不同下水道流入的污染杂质的输送过程进行了建模。数据和方法。海流场是使用普林斯顿海洋模型的西格玛坐标版本计算的,该模型适用于塞瓦斯托波尔湾的区域条件。为了计算污染杂质的传输,在循环模型中引入了物质转移和扩散模型。模型中使用了塞瓦斯托波尔气象局获得的风速和风向数据、使用塞瓦斯托pol湾2.7万个水文站的信息计算的温度、盐度和密度气候场、切尔纳亚河排水量的平均季节变化以及空间分辨率为68米的数字底部起伏。结果分析。对Gollandiya湾可能排放点污染物传播的数值实验表明,污染物运动轨迹(方向)对水循环模式的依赖性在Yuznaya湾最为明显,而在塞瓦斯托波尔湾中部则不太明显。如果Chernaya河河口发生破坏性排放,无论风力条件如何,污染物点都会向西北方向移动,并到达Gollandiya湾。污染水量的进一步演变类似于Gollandiya湾内污水直接排放后的过程。讨论和结论。所进行的数值计算证实了该模型的操作能力及其对所研究物理过程的充分再现。它既可以模拟塞瓦斯托波尔湾水域的环流季节变化和温盐结构,也可以更准确地描述污染物传播的轨迹。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modelling of Water Pollution Propagation in the Sevastopol Bay
Introduction. Tracking of spread of various contaminations and elaboration of the operational systems to control wrecking discharges are among the important tasks of marine environment monitoring. The processes of transport of the contaminating impurity inflowing from different sewers were modeled based on the diagnostic calculations of water circulation in the Sevastopol Bay. Data and Methods. The currents field was calculated using the sigma-coordinate version of the Princeton Ocean Model adapted for the regional conditions in the Sevastopol Bay. To calculate the polluting impurity transport, the model of the matter transfer and diffusion was incorporated into the circulation model. The data on the wind speed and direction obtained at the Sevastopol met office, the temperature, salinity and density climatic fields calculated using the information of 2.7 thousands hydrological stations in the Sevastopol Bay, average seasonal variations of the River Chernaya water discharge and the digital bottom relief with spatial resolution 68 m were used in the model. Analysis of Results. Numerical experiments on the contaminant propagation from the point of possible discharge in the Gollandiya Bay reveal that dependence of the pollutant movement trajectory (direction) upon the pattern of water circulation is most evident in the Yuzhnaya Bay and less manifested in the central part of the Sevastopol Bay. In case of a wrecking discharge in the River Chernaya mouth, a contaminant spot, regardless of wind conditions, moves to the northwest and reaches the Gollandiya Bay. Further evolution of the polluted water volume is similar to the process developing after a sewage discharge directly within the Gollandiya Bay. Discussion and Conclusions. The carried out numerical calculations confirm operatioinal capability of the model and its adequate reproduction of the physical processes under study. It permits both to model the circulation seasonal variation and the thermohaline structure of the Sevastopol Bay waters, and to describe more accurately trajectories of the contaminants’ spread.
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来源期刊
Physical Oceanography
Physical Oceanography OCEANOGRAPHY-
CiteScore
1.80
自引率
25.00%
发文量
8
审稿时长
24 weeks
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