Near-Inertial Wave Propagation in the Western Arctic
Near-Inertial Wave Propagation in the Western Arctic
复制标题
北极西部的近惯性波传播
DOI：
10.1175/jpo2715.1
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发表时间：
2005
影响因子：
3.5
通讯作者：
R. Pinkel
中科院分区：
文献类型：
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作者：
R. Pinkel
摘要从1997年10月到1998年10月，北极表面热量收支（SHEBA）冰营从加拿大盆地中部越过北风岭和楚科奇帽漂流到北冰洋西部。在此期间的大部分时间里，多普勒声纳监测上层海洋的速度和剪切场。近惯性内波被认为是超惯性运动场的主要贡献者。典型的均方根速度为1-2 cm s−1。在这项工作中，与向上和向下传播的波群的速度和剪切方差进行量化。在这些与底层海底深度相关的变化中检测到模式。这些探索的目的是评估这些极低能量的近惯性波在加拿大盆地的大规模演变中发挥的作用。具体重点是输送到盆地斜坡和陆架的能流，可用于驱动海洋边界的混合。能量和…
Abstract From October 1997 through October 1998, the Surface Heat Budget of the Arctic (SHEBA) ice camp drifted across the western Arctic Ocean, from the central Canada Basin over the Northwind Ridge and across the Chukchi Cap. During much of this period, the velocity and shear fields in the upper ocean were monitored by Doppler sonar. Near-inertial internal waves are found to be the dominant contributors to the superinertial motion field. Typical rms velocities are 1–2 cm s−1. In this work, the velocity and shear variances associated with upward- and downward-propagating wave groups are quantified. Patterns are detected in these variances that correlate with underlying seafloor depth. These are explored with the objective of assessing the role that these extremely low-energy near-inertial waves play in the larger-scale evolution of the Canada Basin. The specific focus is the energy flux delivered to the slopes and shelves of the basin, available for driving mixing at the ocean boundaries. The energy and ...