%0 Journal Article
%T Energetics of Geostrophic Adjustment in Rotating Flow<br>旋转流地转适应过程与能量转换规律
%A Fang Juan
%A Wu Rongsheng
%A <br>Fang Juan
%A Wu Rongsheng
%J 大气科学进展
%D 2002
%I 
%X Energetics of geostrophic adjustment in rotating flow is examined in detail with a linear shallow watermodel. The initial unbalanced flow considered first falls under two classes. The first is similar to thatadopted by Gill and is here referred to as a mass imbalance model, for the flow is initially motionless butwith a sea surface displacement. The other is the same as that considered by Rossby and is referred to as amomentum imbalance model since there is only a velocity perturbation in the initial field. The significantfeature of the energetics of geostrophic adjustment for the above two extreme models is that although theenergy conversion ratio has a large case-to-case variability for different initial conditions, its value isbounded below by 0 and above by 1/2. Based on the discussion of the above extreme models, the energeticsofadjustment for an arbitnary initial condition is investigated. It is found that the characteristics of the ener-getics of geostrophic adjustment mentioned above are also applicable to adjustment of the general unbal-anced flow under the condition that the energy conversion ratio is redefined as the conversion ratio betweenthe change of kinetic energy and potential energy of the deviational fields.
%K geostrophic adjustment
%K energy conversion ratio
%K mass imbalance
%K momentum imbalance
%K kine- tic energy
%K potential energy<br>地转适应
%K 质量不平衡
%K 动量不平衡
%K 能量转换率
%K 动能
%K 位能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=5434AFBF6CB6E7E8D67733B541F211C7&aid=8C57DB27888A1C70DB81107A01EBCF04&yid=C3ACC247184A22C1&vid=2A8D03AD8076A2E3&iid=94C357A881DFC066&sid=450524CAAD043961&eid=8D95DD1211171525&journal_id=0256-1530&journal_name=大气科学进展&referenced_num=0&reference_num=18