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首页> 外文期刊>Journal of Physical Oceanography >Quantifying the Incoherent M-2 Internal Tide in the Philippine Sea
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Quantifying the Incoherent M-2 Internal Tide in the Philippine Sea

机译:量化菲律宾海中非相干的M-2内潮

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摘要

The 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 M-2 internal tide energy fluxes in the Philippine Sea using a primitive equation model that resolves the M-2 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 of variability.
机译:斜压潮是将能量混合到深海中的重要来源。但是,由于很难观察到光谱的非相干部分,因此无法很好地进行检查。这项研究使用原始方程模型估算了菲律宾海中M-2内相干和非相干潮汐能通量,该原始方程模型解决了M-2正压和斜压潮以及随时间变化的大气强迫涡旋环流。从吕宋海峡向菲律宾海中发散的时间平均非相干内潮汐能量通量为相干能量通量的25%,向菲律宾东部扩散,并且时间相干通量的30%的时间均相干部分向西传播到菲律宾。南中国海(SCS)。内部潮汐能量的不连贯性来自斜压潮汐的产生和传播的变异性。对非相干部分进行量化,可以估算出高度计或线积分声学测量中缺少的能量,并在变化的情况下进行短暂的原位观测。

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