A WAVE DYNAMIC INTERPRETATION OF SATURNS POLAR HEXAGON

被引：62

作者：

ALLISON, M

GODFREY, DA

BEEBE, RF

机构：

[1] NATL OPT ASTRON OBSERV,TUCSON,AZ 85726

[2] NEW MEXICO STATE UNIV,LAS CRUCES,NM 88003

来源：

SCIENCE | 1990年 / 247卷 / 4946期

关键词：

D O I：

10.1126/science.247.4946.1061

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 hexagonal, pole-centered cloud feature in Saturn's northern atmosphere, as revealed in Voyager dose-encounter imaging mosaics, may be interpreted as a stationary Rossby wave. The wave is embedded within a sharply peaked eastward jet (of 100 meters per second) and appears to be perturbed by at least one anticyclonic oval vortex immediately to the south. The effectively exact observational determination of the horizontal wave number and phase speed, applied to a simple model dispersion relation, suggests that the wave is vertically trapped and provides a diagnostic template for further modeling of the deep atmospheric stratification.

引用

页码：1061 / 1063

页数：3

共 20 条

[1]

ALLISON M, 1987, B AM ASTRON SOC, V19, P848

[2]

ALLISON M, 1990, ICARUS, V83, P283

[3]

[Anonymous], DYNAMIC METEOROLOGY

[4] THERMAL STRUCTURE OF SATURN FROM VOYAGER INFRARED MEASUREMENTS - IMPLICATIONS FOR ATMOSPHERIC DYNAMICS [J].