当前位置: X-MOL 学术Estuar. Coasts › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The Importance of Offshore Exchange for Water Temperatures in Norwalk Harbor
Estuaries and Coasts ( IF 2.7 ) Pub Date : 2020-04-02 , DOI: 10.1007/s12237-020-00710-7
Christina M. Menniti , Michael M. Whitney , Steven R. Deignan-Schmidt

The Norwalk Harbor is the estuarine portion of the Norwalk River, which connects to Long Island Sound. Like many embayments, this macrotidal harbor experiences higher summer water temperatures than waters farther offshore, which contribute to water quality problems. The summer season is characterized by surface heating, strong tides (as in all seasons), weak winds, and low river discharge. To determine the relative importance of exchange with offshore waters in regulating the harbor temperature, a control volume approach is used to make a summer temperature budget for the harbor based on observations. Time series of harbor temperature, surface heat flux, and Norwalk River inflow are constrained with measurements of water temperatures, atmospheric conditions, and river discharge. The impact of offshore exchange is inferred as the residual after the real temperature change in the harbor, and all other sources of temperature change are constrained. The analysis indicates that, in the summer, the impact of offshore exchange is comparable to the impact of the surface heat flux and far greater than the impact of the river. Consequently, the harbor is much cooler during summer than it would be if it was not connected to Long Island Sound. The methods applied here are applicable to any relatively small, semi-enclosed body of water and do not require the use of models or velocity observations. It is likely that many other embayments have an appreciable degree of thermal buffering via exchange with offshore waters.

中文翻译:

诺沃克港口离岸水温交换的重要性

诺沃克港口是诺沃克河的河口部分,与长岛之声相连。像许多堤岸一样,这个潮汐港的夏季水温要比更远的海上水温高,这会导致水质问题。夏季的特征是地表加热,潮汐强烈(与所有季节一样),弱风和河流流量低。为了确定与近海水交换对调节港口温度的相对重要性,基于观测值,使用控制量方法来为港口制定夏季温度预算。港口温度,地表热通量和诺沃克河入流的时间序列受到水温,大气条件和河流流量的测量的限制。可以将海上交换的影响推断为港口中实际温度变化后的剩余量,并且所有其他温度变化源都受到限制。分析表明,在夏季,海上交换的影响与地表热通量的影响相当,远大于河流的影响。因此,与未连接长岛之声的港口相比,夏天的港口凉爽得多。此处应用的方法适用于任何相对较小的半封闭水体,不需要使用模型或速度观测值。通过与离岸水交换,许多其他的隔离物可能具有一定程度的热缓冲作用。分析表明,在夏季,海上交换的影响与地表热通量的影响相当,远大于河流的影响。因此,与未连接长岛之声的港口相比,夏天的港口凉爽得多。此处应用的方法适用于任何相对较小的半封闭水体,不需要使用模型或速度观测值。通过与离岸水交换,许多其他的隔离物可能具有一定程度的热缓冲作用。分析表明,在夏季,海上交换的影响与地表热通量的影响相当,远大于河流的影响。因此,与未连接长岛之声的港口相比,夏天的港口凉爽得多。此处应用的方法适用于任何相对较小的半封闭水体,不需要使用模型或速度观测值。通过与离岸水交换,许多其他的隔离物可能具有一定程度的热缓冲作用。此处应用的方法适用于任何相对较小的半封闭水体,不需要使用模型或速度观测值。通过与离岸水交换,许多其他的隔离物可能具有一定程度的热缓冲作用。此处应用的方法适用于任何相对较小的半封闭水体,不需要使用模型或速度观测值。通过与离岸水交换,许多其他的隔离物可能具有一定程度的热缓冲作用。
更新日期:2020-04-02
down
wechat
bug