Internal tides and energy fluxes over Great Meteor Seamount

[摘要] Internal-tide energy fluxes are determined halfway over the southernslope of Great Meteor Seamount (Canary Basin), using data fromcombined CTD/LADCP yoyoing, covering the whole water column.Thestrongest signal is semi-diurnal and is concentrated in the upper fewhundred meters of the water column.An indeterminacy in energy fluxprofiles is discussed; it is argued that a commonly applied conditionused to determine these profiles is in fact invalid over slopingbottoms. However, the vertically integrated flux can be establishedunambiguously; the observed results are compared with the outcome of anumerical internal-tide generation model. For the semi-diurnalinternal tide, the vertically integrated flux found in the modelcorresponds well to the observed one. The observed diurnal signalappears to be largely of non-tidal origin.

[学科分类] 海洋学与技术