Entrainment in the Denmark Strait overflow plume by meso-scale eddies
Entrainment in the Denmark Strait overflow plume by meso-scale eddies
复制标题
中尺度涡流夹带丹麦海峡溢出羽流
DOI：
10.5194/os-6-301-2010
复制
发表时间：
2009
期刊：
影响因子：
3.2
通讯作者：
D. Quadfasel
中科院分区：
文献类型：
--
作者：
Gunnar Voet;D. Quadfasel
抽象的。利用系泊仪器和经典水文数据的电流和温度的时间序列，估计夹带的浮力环境水到溢出羽流的丹麦海峡和相关的下游变暖的羽流。在岩床的前200 km内，变暖率最高（0.4-0.5 K/100 km），并在下游进一步降低至0.05-0.1 K/100 km。搅拌中尺度涡旋导致横向热通量，解释0.1 K/100公里的变暖，但在第一个200公里的窗台也垂直diapycnal通量，可能是由打破内波，必须有助于夹带。
Abstract. The entrainment of buoyant ambient water into the overflow plume of Denmark Strait and the associated downstream warming of the plume are estimated using time series of currents and temperature from moored instrumentation and classical hydrographic data. Warming rates are highest (0.4–0.5 K/100 km) within the first 200 km of the sill, and decrease to 0.05–0.1 K/100 km further downstream. Stirring by mesoscale eddies causes lateral heat fluxes that explain the 0.1 K/100 km warming, but in the first 200 km from the sill also vertical diapycnal fluxes, probably caused by breaking internal waves, must contribute to the entrainment.