Scaling relationships for diffusive boundary layer thickness and diffusive flux based on in situ measurements in coastal seas
Scaling relationships for diffusive boundary layer thickness and diffusive flux based on in situ measurements in coastal seas
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基于沿海海域原位测量的扩散边界层厚度和扩散通量的比例关系
DOI：
10.1016/j.pocean.2016.03.001
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发表时间：
2016
影响因子：
4.1
通讯作者：
Hao Wei
中科院分区：
文献类型：
--
作者：
Jianing Wang;Liang Zhao;Renfu Fan;Hao Wei
本文分析了三个近岸海域在不同动力和氧环境下的扩散边界层和底边界层的现场测量结果。总结了DBL厚度（dDBL）的以往定标方法。三种方法，导致一致的尺寸在双方的派生关系都植根于巴彻勒长度尺度。将巴彻勒长度尺度表示为流速（U）的函数的方法被发现是当壁定律适用时缩放dDBL的最合适的方法。扩散通量由动态强制dDBL和DBL上的氧浓度差（DC）控制。DC值可以使用BBL（CBBL）的氧浓度和标准化的底栖温度进行缩放。一个有效的方法来缩放的基础上测量的底栖温度，盐度，U，CBBL的扩散通量，并估计底部粗糙度。dDBL的缩放主要基于U和缩放的扩散通量很好地拟合数据从三个网站，尽管他们在动态和氧气环境的显着差异。© 2016 Elsevier Ltd.保留所有权利。
In situ measurements of the diffusive boundary layer (DBL) and bottom boundary layer (BBL) under different dynamic and oxygen environments in three coastal seas are analyzed. Previous scaling methods for the DBL thickness (dDBL) are summarized. Three methods that lead to consistent dimensions at both sides of the derived relationships have all been rooted in the Batchelor length scale. The method representing the Batchelor length scale as a function of flow speed (U) is found to be the most appropriate for scaling dDBL when the law of wall applies. Diffusive flux is controlled by the dynamic-forced dDBL and the difference in oxygen concentration over the DBL (DC). Values of DC could be scaled using the oxygen concentration of the BBL (CBBL) and the normalized benthic temperature. An effective method is developed for scaling the diffusive flux based on measurements of benthic temperature, salinity, U, CBBL, and the estimation of bottom roughness. The scaling of dDBL based mainly on U and the scaling of diffusive flux well fit data from the three sites, despite their distinct differences in dynamic and oxygen environments. Ó 2016 Elsevier Ltd. All rights reserved.