SIMPLE DYNAMIC-MODELS OF NEPTUNE GREAT DARK SPOT

被引：58

作者：

POLVANI, LM

WISDOM, J

DEJONG, E

INGERSOLL, AP

机构：

[1] MIT,DEPT MATH,CAMBRIDGE,MA 02139

[2] MIT,DEPT EARTH ATMOSPHER & PLANETARY SCI,CAMBRIDGE,MA 02139

[3] CALTECH,DIV GEOL & PLANETARY SCI,PASADENA,CA 91125

来源：

SCIENCE | 1990年 / 249卷 / 4975期

关键词：

D O I：

10.1126/science.249.4975.1393

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The large amplitude oscillations of the shape of Neptune's Great Dark Spot are well reproduced by simple dynamical models of an isolated vortex embedded in a background shear flow. From the time series of the aspect ratio and inclination of the vortex values are estimated for the background shear and the mean vorticity of the Great Dark Spot, and a lower bound is placed on the value of the Rossby deformation radius. These models imply the existence of a planetary-scale zone of deterministic chaotic advection in the atmosphere of Neptune.

引用

页码：1393 / 1398

页数：6