Spatially-averaged velocity from the seafloor horizontal electric field

A. Chave, D. Luther, J. Filloux
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引用次数: 8

Abstract

The theoretical relationship between the horizontal electric field (HEF) and the vertically integrated, conductivity-weighted horizontal water velocity, including the effect of finite electrical conductivity beneath the seafloor, is reviewed. This is validated by comparing data from a six-element taut current meter mooring to nearby HEF data collected in 1986-7 in the central north Pacific. The similarity of the two data sets is limited only by a high noise level in the mooring data due to rotor stalling and by large vertical wavenumber components of the velocity field that cannot be resolved with a small number of discrete velocity samples. The results of this study constitute further verification of the utility of electric field methods in oceanography.<>
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来自海底水平电场的空间平均速度
综述了水平电场(HEF)与垂直综合电导率加权水平水速之间的理论关系,包括海底有限电导率的影响。通过比较1986- 1987年在北太平洋中部收集的六单元绷紧海流计系泊数据和附近的HEF数据,验证了这一点。两个数据集的相似性仅受限于由于转子失速导致的系泊数据中的高噪声水平和速度场的大垂直波数分量,这些分量不能用少量离散速度样本来解决。本研究结果进一步验证了电场法在海洋学中的实用性。
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