The arrival of recently formed Labrador sea water in the Deep Western Boundary Current at 26.5°N
The arrival of recently formed Labrador sea water in the Deep Western Boundary Current at 26.5°N
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最近形成的拉布拉多海水到达北纬 26.5° 的深西边界流
DOI：
10.1029/98gl01853
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发表时间：
1998
影响因子：
5.2
通讯作者：
M. Mccartney
中科院分区：
文献类型：
--
作者：
R. Molinari;R. Fine;W. D. Wilson;R. Curry;J. Abell;M. Mccartney
北大西洋的深西部边界流（DWBC）是拉布拉多海水（LSW）形成区与南部海洋内部之间的主要管道。在26.5°N的DWBC中获得的水文性质时间序列（1985-1997）表明，在1994年之前，LSW密度范围内的温度、盐度和瞬态示踪剂性质几乎没有新近形成的包裹的迹象。从1994年开始一直持续到1997年，人们观察到一种较新版本的LSW的特性（更冷、更新鲜和更高的示踪剂浓度）。从区域数据库开发的较长的温度和盐度时间序列显示了Abaco地区1994年和1980-1981年的事件。这两个事件都与大约10年前在拉布拉多海发生的异常相一致。从拉布拉多海到26.5°N的10年过境时间少于从早期研究推断的18年过境时间。
The Deep Western Boundary Current (DWBC) of the North Atlantic is a principal conduit between the formation region for Labrador Sea Water (LSW) and the oceanic interior to the south. Time series (1985–1997) of hydrographic properties obtained in the DWBC at 26.5°N show that prior to 1994, temperature, salinity, and transient tracer properties within the LSW density range showed little indication of recently formed parcels. Properties characteristic of a newer version of LSW (cooler, fresher, and higher tracer concentrations) were observed beginning in 1994 and continuing through 1997. Longer time series of temperature and salinity, developed from a regional data base, show both the 1994 and a 1980–1981 event in the Abaco region. Both events are consistent with anomalies in the Labrador Sea that occurred some 10 years earlier. The 10‐year transit time from the Labrador Sea to 26.5°N is less than the 18‐year transit time inferred from earlier studies.