Tracking the spread of a passive tracer through Southern Ocean water masses
作者: Jan D. ZikaJean-Baptiste SalléeAndrew J. S. MeijersAlberto C. Naveira-GarabatoAndrew J. WatsonMarie-Jose MessiasBrian A. King
作者单位: 1School of Mathematics and Statistics, University of New South Wales, Sydney, Australia
2CNRS, LOCEAN Laboratory, Sorbonne Université, Paris, France
3British Antarctic Survey, Cambridge, UK
4National Oceanography Centre, University of Southampton, Southampton, UK
5College of Life and Environmental Sciences, University of Exeter, Exeter, UK
6National Oceanography Centre, Southampton, UK
刊名: Ocean Science, 2020, Vol.16 (2), pp.323-336
来源数据库: Copernicus Journal
DOI: 10.5194/os-16-323-2020
原始语种摘要: A dynamically passive inert tracer was released in the interior South Pacific Ocean at latitudes of the Antarctic Circumpolar Current. Observational cross sections of the tracer were taken over 4 consecutive years as it drifted through Drake Passage and into the Atlantic Ocean. The tracer was released within a region of high salinity relative to surrounding waters at the same density. In the absence of irreversible mixing a tracer remains at constant salinity and temperature on an isopycnal surface. To investigate the process of irreversible mixing we analysed the tracer in potential density-versus-salinity-anomaly coordinates. Observations of high tracer concentration tended to be collocated with isopycnal salinity anomalies. With time, an initially narrow peak in tracer concentration as...
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  • tracer 示踪物
  • salinity 盐度
  • spreading 扩张
  • isopycnal 等密度的
  • density 密度
  • irreversible 不可逆的
  • concentration 浓度
  • investigate 
  • through 经过
  • background 背景