A Suggested Method for Representing Gradient Flow in Isentropic Surfaces
A Suggested Method for Representing Gradient Flow in Isentropic Surfaces
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表示等熵表面梯度流的建议方法
DOI：
10.1175/1520-0477-18.6-7.210
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发表时间：
1937
影响因子：
8
通讯作者：
R. B. Montgomery
中科院分区：
文献类型：
--
作者：
R. B. Montgomery
目前正广泛使用等熵图来表示大气流的流型，并正在尝试将其用于海洋学。它们的优点在于，任何绝热位移并保持在流体静力平衡下的粒子都保持在其原始表面上。简单地说，使用等熵图的目的是，它们提供了一种完全独立于关于梯度流存在的假设的方式来确定运动的方法。同时，我们希望知道梯度流是什么，并需要一种方便的方法来确定它。表示梯度流的常用方法，即通过等压线或等压面地形，不能用于等熵图的倾斜面。
Extensive use is now being made of isentropic charts for the rep resentation of flow patterns in atmospheric currents, and their use is being attempted in oceanography also. Their advantage lies in the property that any particle displaced adiabatically and maintained under hydrostatic equilibrium remains on its original surface. The purpose in using isentropic charts is, briefly, that they afford a means of determin ing the motion in a manner entirely independent of assumptions regard ing the existence of gradient flow. At the same time it is desirable to know what the gradient flow would be, and a convenient method for de termining it is needed. The common methods of represent ing gradient flow, viz., by means of isobars or topography of isobaric sur faces, cannot be used for the slop ing surface of an isentropic chart, ititution, Woods Hole, Mass.