Quantifying the Incoherent M2 Internal Tide in the Philippine Sea
Quantifying the Incoherent M2 Internal Tide in the Philippine Sea
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DOI：
10.1175/jpo-d-16-0023.1
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发表时间：
2016-08
影响因子：
3.5
通讯作者：
C. Kerry;B. Powell;G. Carter
中科院分区：
文献类型：
--
作者：
C. Kerry;B. Powell;G. Carter
斜压潮汐是混合能量进入深海的重要来源；然而，由于光谱的非相干部分很难观测，因此没有得到很好的研究。本文利用一个原始方程模式估算了菲律宾海域的相干和非相干M2内潮能量通量，该模式解析了M2正压和斜压潮汐以及随时间演变的大气强迫涡旋环流。时间平均的非相干内潮能量通量占相干能量通量的25%从吕宋海峡向东进入菲律宾海，时间平均非相干部分30%的相干能量通量向西传播到南中国海。内潮能量的非相干是斜压潮汐产生和传播变化的结果。量化非相干部分估计从高度计派生或线积分声学测量遗漏的能量，并将短暂的现场观测置于...
AbstractThe baroclinic tides are a crucial source of mixing energy into the deep ocean; however, the incoherent portion of the spectrum is not well examined because it is difficult to observe. This study estimates the coherent and incoherent M2 internal tide energy fluxes in the Philippine Sea using a primitive equation model that resolves the M2 barotropic and baroclinic tides and the time-evolving atmospherically forced eddying circulation. A time-mean, incoherent, internal tide energy flux of 25% of the coherent energy flux is found to emanate eastward into the Philippine Sea from the Luzon Strait and a time-mean incoherent portion of 30% of the coherent energy flux propagates westward into the South China Sea (SCS). The incoherent internal tide energy results from baroclinic tide generation and propagation variability. Quantifying the incoherent portion estimates the energy missing from altimeter-derived or line-integral acoustic measurements and places short-lived, in situ observations in the context...