Long-Period Tides in an Atmospherically Driven, Stratified Ocean
Long-Period Tides in an Atmospherically Driven, Stratified Ocean
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DOI：
10.1175/jpo-d-15-0006.1
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发表时间：
2015-07
影响因子：
3.5
通讯作者：
R. Ponte;A. Chaudhuri;S. Vinogradov
中科院分区：
文献类型：
--
作者：
R. Ponte;A. Chaudhuri;S. Vinogradov
AbstractLong-period tides (LPT) are studied using a stratified, primitive equation model on a global domain and in the presence of a fully developed, atmospherically forced ocean general circulation. The major LPT constituents, from termensual to nodal (18.6 yr) periods, are examined. Ocean circulation variability can overwhelm the longest tide signals and make inferring LPT from data difficult, but model results suggest that bottom pressure offers cleaner signal-to-noise ratios than sea level, particularly at low latitudes where atmospherically driven variability is substantially stronger at the surface than at the bottom. Most tides exhibit a significant large-scale dynamic response, with the tendency for weaker nonequilibrium signals in the Atlantic compared to the Pacific as seen in previous studies. However, across most tidal lines, the largest dynamic signals tend to occur in the Arctic and Nordic Seas and also in Hudson Bay. Bathymetry and coastal geometry contribute to the modeled nonequilibrium b...
