DISPERSION AND REPOPULATION OF HEARD-ASCENSION MODES

被引：13

作者：

SHANG, EC ^{[1
]}

WANG, YY ^{[1
]}

GEORGES, TM ^{[1
]}

机构：

[1] NOAA,ENVIRONM TECHNOL LAB,BOULDER,CO 80303

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1994年 / 96卷 / 04期

关键词：

D O I：

10.1121/1.410109

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The propagation of acoustic modes over the 9140-km underwater path to Ascension during the Heard Island Feasibility Experiment is simulated. Using a modal decomposition of the parabolic-equation field, we find that mode coupling at the circumpolar. front has significant impact on modal dispersion and modal repopulation, which complicates the pulse-arrival sequence. Modal dispersion and modal repopulation are calculated at eleven frequencies from 52 to 62 Hz, and the effects on pulse spreading are shown.

引用

页码：2371 / 2379

页数：9

共 19 条

[1]

Brekhovskikh L.M., 1980, WAVES LAYERED MEDIA

[2] THE GROUP-VELOCITY OF NORMAL-MODES [J].