Diapycnal diffusivities from a tracer release experiment in the deep sea, integrated over 13 years
Diapycnal diffusivities from a tracer release experiment in the deep sea, integrated over 13 years
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DOI：
10.1029/2011gl050294
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发表时间：
2012-02
影响因子：
5.2
通讯作者：
Craig D. Rye;M. Messias;J. Ledwell;A. Watson;A. Brousseau;B. King
中科院分区：
文献类型：
--
作者：
Craig D. Rye;M. Messias;J. Ledwell;A. Watson;A. Brousseau;B. King
2009 年 3 月记录的大西洋彼岸 24°S 剖面，采样了 13 年前在巴西盆地深处释放的示踪羽流。一维扩散方程用于模拟示踪剂的垂直扩散，产生 4 km 深度处的平均二密扩散率估计值约为 3 × 10−4 m2/s。这一估计与 1996 年至 2000 年（示踪剂释放后四年内）对示踪剂羽流进行的调查得出的结果类似，因此为该结果的长期稳定性提供了强有力的证据。
A section across the Atlantic at 24°S recorded in March 2009, sampled a tracer plume released in the deep Brazil Basin 13 years earlier. The 1‐D diffusion equation was used to model the vertical spread of the tracer, yielding a mean diapycnal diffusivity estimate of approximately 3 × 10−4 m2/s at 4 km depth. This estimate is similar to that found by surveys of the tracer plume made between 1996 and 2000, within four years of the tracer release and therefore provides strong evidence for the long‐term stability of that result.