Effect of a Western Continental Slope on the Wind-Driven Circulation*
Effect of a Western Continental Slope on the Wind-Driven Circulation*
复制标题
西部大陆坡度对风驱动环流的影响*
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
J. Becker
中科院分区：
文献类型：
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作者：
J. Becker
对于等密度海洋，一个简单的惯性风生环流理论模式的数值解很大程度上取决于西侧边界是具有垂直侧壁还是光滑的大陆架。在有陆架的盆地中，反气旋风得到了非定常的单涡旋惯性解，而气旋风得到的通常是定常的单涡惯性解。然而，在平底盆地，相应的模式解对于反气旋风和气旋风都是稳定的。此外，对于气旋强迫，在西部陆坡的盆地中发现了多重平衡，而在平底盆地中则不存在(尽管平底盆地解的唯一性尚未得到证明)。模式解对地形和风强迫标志的依赖性归因于摩擦的影响，摩擦位于盆地的西南角，对大陆陆相是有利的。
Abstract Numerical solutions of a simple theoretical model of the wind-driven circulation with inertia for a constant density ocean depend strongly upon whether the western boundary is modeled with a vertical sidewall or a smooth continental shelf. In the basin with the continental shelf, unsteady single-gyre inertial solutions are obtained for anticyclonic winds while steady single-gyre inertial solutions typically are obtained for cyclonic winds. In the flat-bottom basin, however, the corresponding model solutions are steady for both anticyclonic and cyclonic winds. In addition, for cyclonic forcing, multiple equilibria are found in the basin with the western continental slope but not in the flat-bottom basin (although the uniqueness of the solutions in the flat-bottom basin has not been proven). The dependence of the model solutions on the topography and the sign of the wind forcing is attributed to the effects of friction, which are localized in the southwest corner of the basin for the continental sl...