CAJ | 학술논문

通过对TOGA-COARE期间的一组锚系仪器阵列资料的分析得出:在赤道西太平洋1°45′S,156°E.海域存在显著的半日潮频内波,它的水平波数(波长)、垂向波数、水平传播速度和垂向传播速度分别约为:3.3×10-2 km-1 (210 km),-1.6×10-3 m-1,2.0 m/s,-3.8 cm/s.波形向斜下方传播,亦即波能向斜上方传输.它在观测点西南方生成后,向东北方向传播,到达观测海区.流速矢量旋转谱水平随深度的变化呈马鞍形,低谷及深处的峰所在深度分别与南赤道流及赤道潜流的南边界所在深度大体一致.旋转椭圆主轴方位角随深度变化,在浅层(40 m处)为北偏东30°,到深处(324 m)转为东偏南14°.总体上呈东北方向,表明波来自西南方向.
통과대TOGA-COARE기간적일조묘계의기진렬자료적분석득출:재적도서태평양1°45′S,156°E.해역존재현저적반일조빈내파,타적수평파수(파장)、수향파수、수평전파속도화수향전파속도분별약위:3.3×10-2 km-1 (210 km),-1.6×10-3 m-1,2.0 m/s,-3.8 cm/s.파형향사하방전파,역즉파능향사상방전수.타재관측점서남방생성후,향동북방향전파,도체관측해구.류속시량선전보수평수심도적변화정마안형,저곡급심처적봉소재심도분별여남적도류급적도잠류적남변계소재심도대체일치.선전타원주축방위각수심도변화,재천층(40 m처)위북편동30°,도심처(324 m)전위동편남14°.총체상정동북방향,표명파래자서남방향.
The analyses of a data series obtained during TOGA- COARE show the existence of remarkable semi-diurnal internal tides in the western equatorial Pacific Ocean around 1°45′S, 156°E. Some characteristic parameters of the internal tides are vertical wavenumber -1.6×10-3 m-1, horizontal wavenumber (wavelength) 3.3×10-2 km-1 (210 km), vertical propagation speed -3.8 cm/s and horizontal propagation speed 2.0 m/s. The waveforms propagate downwards slantingly, that is, the wave energy transfers upwards slantingly. Depth-distribution of the rotary spectral levels is a saddle-shape. The depths of the trough and the deeper peaks are almost coincident with those of the south boundaries of the South Equatorial Current and the Equatorial Undercurrent, respectively. The mean orientation of the rotary spectral ellipse changes with depth: 30o from north to east at 40 m, and changes into 14o from east to south at 324 m, and generally, it points to northeastward, which indicates that waves come from the southwest.