摘要
在文献[1]中,作者曾给出了f-平面上陆架诱导阻尼波的无因次方程组及相应的诸无因次参数,就一个底坡均匀的有限宽陆架上自由波模型给出了它的解,并仅对非弥散陆架波和半无限宽陆架上的零阶边缘波这两种特殊情形下的弥散关系作了分析。
Numerical calculations of the dispersion relationship of dissipative trapped-waves on an uniformly sloping continetal shelf of finite width are made to elucidate with emphasis the influences of bottom stress and/or width of continental shelf upon the waves on an f-plane.For edge waves the influences are:1.The order of magnitude of reletive frequencies for edge waves travelling on a continental shelf with"broad"width(■(δ)=1)is less than with"narrow"width(■(δ)<1).2.The influence of Coriolis force on edge waves is measured by■(√δ);for■(δ)=1,the fundamental edge wave travelling to the right(facing the sea from the shore)in the northern hemisphere can have a particular reletive wave number point corresponding to a zero group velocity;there is a reletive wave number region where the Coriolis force can have the dominant effect.3.The effect of turbulence-damping on edge waves is measured by■(√δμ/k),where k andμdenote the reletive wave number and the reletive turbulence-damping coefficient respectively;on an f-plane,the turbu lence-damping can have different influences,particulaly in the case where■(δ)=1,upon the characteristics of two edge waves which travel along the shore in the opposite directions.For continental Shelf waves the influences are:1.The difference between the influences of a"broad"shelf and a"narrow"shelf upon the reletive freqencies of the continental shelf waves is only in magnitude but not in the order of magnitude.2.The significant effect of turbulence-damping on the reletive frequencies of continental shelf waves is found only in a narrow reletive wave number region,particularly for the zero-order waves with■(δ)=1.Finally,a comparison between the models and some observations is made for edge waves.
作者
冯士筰
Feng Shizuo(Feng Shih-zao)(Shandong College of Oceanology)
出处
《海洋与湖沼》
1981年第1期1-8,共8页
Oceanologia Et Limnologia Sinica
