Radium Isotope Tracers to Evaluate Coastal Ocean Mixing and Residence Times
Radium Isotope Tracers to Evaluate Coastal Ocean Mixing and Residence Times
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DOI：
10.1007/978-3-642-10637-8_17
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
L. Zhang;J. Zhang;P. Swarzenski;Zhe Liu
中科院分区：
文献类型：
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作者：
L. Zhang;J. Zhang;P. Swarzenski;Zhe Liu
在近岸生物地球化学研究中，独特海岸水团的识别和来源是必不可少的。水团混合和停留时间影响水质，并在藻华的演变中发挥作用。因此，这些信息对资源管理人员至关重要，因为他们有兴趣了解污染物的来源和命运以及它们在沿海海洋中的最终命运。如果混合对于定量评估交换量很重要，那么水停留时间或水龄对于评估这种交换率很重要。了解水的质量停留时间对检查污染物排放的时间尺度和评价输送现象是有用的。本文综述了利用镭同位素评价沿海水体混合和停留时间的科学意义、测量方法和模型。这里描述的每种方法或模型都是有效的，尽管每种方法或模型都有自己的优点和缺点。给出了不同端元混合的例子作为案例研究。这里提出的所有方法都证明了镭同位素在评估水质量混合和停留时间方面的效用。
The identification and provenance of unique coastal water masses is essential in near-shore biogeochemical studies. Water mass mixing and residence times impact water quality and can play a role in the evolution of algal blooms. Such information is thus critical for resource managers who have an interest in understanding the source and fate of contaminants and their eventual fate in the coastal ocean. If mixing is important for quantitatively assessing the amount of exchange, the water residence time or water age is important to assess the rate of this exchange. An understanding of water mass residence times is useful to examine time scales of contaminant discharge and to evaluate transport phenomena.This review summarizes the scientific significance, measurement approaches, and models to evaluate coastal water mixing and residence times using radium isotopes. Each method or model described here is valid, although each has its own advantages and disadvantages. Examples of mixing among different end-members are given as case studies. All approaches presented here demonstrate the utility of radium isotopes for the evaluation of water mass mixing and residence times.