Can we observe near-inertial waves by using lowered Acoustic Doppler Current Profiler?
Can we observe near-inertial waves by using lowered Acoustic Doppler Current Profiler?
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我们可以使用降低的声学多普勒电流剖面仪来观察近惯性波吗？
DOI：
10.1002/essoar.10512991.1
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Katsumata Katsuro
中科院分区：
文献类型：
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作者：
Yoshida;K.;and R. Mizuta;田中夕香子・山田卓司;Katsumata Katsuro
在模拟的Garrett-Munk内波中，定量地评估了用降低的声学多普勒海流剖面仪单次投射观测近惯性波的可行性。由于惯性周期在高纬度较短，而上升和下降之间的间隔在较浅的深度较长，因此该估计器的性能在较高纬度的较浅的深度较好。然而，即使在最好的条件下，估计也会受到超过100%的相对不确定性的影响。用LADCP模型精确估计近惯性波是不可行的。然而，在一个台站重复投射能够分辨典型的近惯性波。
Feasibility of observing near-inertial waves with a single cast of a lowered Acoustic Doppler Current Profiler is quantitatively assessed in simulated Garrett-Munk internal waves. Because the inertial period is shorter in higher latitudes and the interval between the upand downcasts is longer in shallower depths, the performance of the estimator is better in higher latitudes at shallower depths. Even in the best conditions, however, the estimates are contaminated by relative uncertainties greater than 100%. It is not feasible to estimate nearinertial waves accurately using a LADCP cast. Nevertheless, repeated casts at one station are capable of resolving typical near-inertial waves.