In this paper,the basic physical concept and propagation characteristics of infrasonic wave are introduced,and the present status of study on infrasonic wave is summarized.

• 介绍了次声波的基本物理概念和次声波的传播特性,概述了次声波的研究现状,提出了利用次声波来预警海啸灾害的建议,并对其可行性进行了分析。