摘要
根据研究方法不同的动力学特征及其运用上的差异,利用已知的水文气象资料推测海洋流场的方法可以分成3类:①描述性方法;②热成风关系式与示踪物守恒相结合的诊断方法;③Sark isyan诊断模式及复杂动力模式。结合南海环流的工作讨论了这些方法的进展情况及在南海环流研究中的作用,并对目前利用水文气象资料推测海洋流场的研究趋势进行了分析。
Some methods for deducing circulation from hydrographic data are reviewed. These methods could be classified into three types according to their different dynamics and their different applications as follows:①description methods, the major character is only to qualitatively describe the direction of ocean circulation.②diagnostic methods which combine thermal wind relation with tracer conservation, these methods could be used to quantitatively calculate the absolute ocean geostrophic currents. Some oceanographers began to consider the ageostrophic current component by these methods, and ③Sarkisyan' s diagnostic methods and the other complicated models. Taking winds, topographic effects into account, these methods quantitatively calculate the absolute currents, which include geostrophic and ageostrophic components. In this paper, we will discuss their progress together with the South China Sea circulation. We will also analyze their developmental trends in the study of deducing ocean circulation from hydrographic data. For studying the SCS circulation, these methods which deduce the ocean circulation from the hydrographic data play a very important role in recognizing the SCS ocean circulation while the differences of the results from these methods in calculating SCS ocean circulation need to be studied further.
出处
《地球科学进展》
CAS
CSCD
2004年第1期100-106,共7页
Advances in Earth Science
基金
国家重点基础研究发展规划项目"南海季风环流及其变异机理"(编号:1999043805)
"南海环流及其变异预测数值模式"(编号:1999043810)
国家自然科学基金项目"P矢量方法在南海中的运用"(编号:40076009)
中国科学院大气科学和地球流体力学数值模拟国家重点实验室开放课题"太平洋涡度的输入及其对南海的影响"资助
关键词
水文资料
海洋流场
南海环流
Hydrographic data
Sea Current
The South China Sea circulation.
