VIRTUAL MODES AND MODE AMPLITUDES NEAR CUTOFF

被引：15

作者：

TINDLE, CT

机构：

[1] Applied Research Laboratories The University of Texas at Austin

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1979年 / 65卷 / 06期

关键词：

D O I：

10.1121/1.382929

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

For a Pekeris model the contribution of the continuous mode integral is analyzed in terms of virtual modes with particular attention to cases with a discrete mode just below or just above cutoff. There is a steady change of amplitude as a virtual mode changes into a discrete mode. The mode amplitudes decay with range and analytic approximations valid in most practical situations are obtained. © 1979, Acoustical Society of America. All rights reserved.

引用

页码：1423 / 1428

页数：6

共 9 条

[1]

ABRAMOWITZ M, 1965, HDB MATH FUNCTIONS, P300

[2]

GRADSHTEYN IS, 1965, TABLES INTEGRALS SER, P465

[3] NORMAL MODES, VIRTUAL MODES, AND ALTERNATIVE REPRESENTATIONS IN THEORY OF SURFACE-DUCT SOUND PROPAGATION [J].