次声波

次声波和次声武器从上世纪末才开始引起人们的关注和研究，因此次声发射和聚焦技术还处于起步阶段，许多理论和技术难题需要解决。

The infrasound wave and the infrasound weapon have been aroused people 's attention and research since last century end , so infrasound emission and focus technology are in the initial step , and there are many puzzles of theory and technology are need to be solved .

一定强度的机械作业振动、汽车振动、声波特别是次声波振动等都会对人体造成生理功能改变，甚至病理性损伤。

The vibration of the machines , automobiles , and infrasound wave , etc. can lead to physiological function change and even pathological injury to human when it reaches some intensity .

基于FPGA的次声波合成的电路设计

Circuit Design of Infrasound Wave Based on FPGA

结论强次声波可引起豚鼠Corti器超微结构不同程度的损伤。

Conclusion High - level infrasound can cause damage to the inner ear of guinea pigs .

强次声波对豚鼠Corti器外毛细胞脱氢酶活性的影响

Effects of intense infrasound on activities of dehydrogenase of the organ of Corti in guinea pigs

地面风产生的扰动噪声影响周期大于10s的次声波的检测。

Wind noise at the surface of the Earth limits the detection of infrasonic waves with periods greater than 10 s.

用Budden的全波解理论，加上一定的边界条件，求出了次声波共振因子的位置，由此解释了观测到的次声波频谱中的两个共振峰。

Using the theory of BUDDEN full waves and some certain boundary conditions , the authors get the location of resonant peaks of infrasonic . Based on this , the two resonant peaks in the infrasonic spectrum can be explained reasonably .

1993年7月12日日本北海道地震次声波

Infrasound waves caused by earthquake on 12 July 1993 in Japan

地震预报中次声波声源方向的研究

A Study of the Direction of Infrasonic Origin on Earthquake Forecast

利用次声波对常规导弹爆炸效果探测的方法

Measurement Method on Conventional Missile Explosion Result Using Infrasound Wave

强次声波对豚鼠前庭终器超微结构的损伤

Ultrastructure damage of vestibular end-organs induced by intense infrasound in guinea pigs

次声波在海啸灾害预警中的应用探讨

Discussion on Application of Infrasonic Wave to Tsunami Disaster Warnings

次声波聚焦技术研究

Research of the Infrasound Wave Focus Technic

分析台风季节所观测到的次声波扰动

Analyzing infrasonic disturbance observed in typhoon season

初步解释了强震前兆次声波的产生机理和传播机制。

The generating and propagating mechanism of the precursory infrasound of earthquake are primarily explained .

次声波武器及其物理基础

Infrasonic weapons and their physical foundations

4～8级大风的次声波三维动态频谱测量研究

Measurement of three-dimensional dynamic frequency spectra of infrasonic waves produced by winds with 4-8 wind scales

对次声波扰动的观测与分析

Observation and analysis of infrasonic disturbances

用次声波对陨石爆炸能量的计算

A calculation of the energy released from the great meteorite explosion based on the infrasound data

2001年1月强震的前兆次声波测量及机理探讨

Mechanism discussion and Measurements of the Precursory Infrasonic Wave of Strong Earthquake in January of 2001

次声波及次声武器

Infrasonic sound and infrasonic weapon

利用次声波异常信号预测发震时间及震级是十分有效的。

Using the infrasound method to predict the initial time and scale of the earthquake is effective .

2000年7～9月强地震的前兆次声波测量研究

Measurements and Study of the Precursory Infrasonic Waves of Strong Earthquakes from July to September , 2000

次声波图数字化系统

An infrasound waveform digitization system

次声波普遍存在于工业、交通、自然及生活环境中。

Infrasonic wave is commonly found in a variety of industry , transportation , nature and living environment .

急性次声波暴露后豚鼠位听功能及内耳超微结构的变化

Effects of acute infrasound exposure on vestibular and auditory functions and the ultrastructural changes of inner ear in the guinea pig

由于大气层的不均匀性，次声波分解成不同的简正方式来传播，它们有各自的相速度和群速度。

Since the inhomogeneity in the atmosphere , an infrasonic wave consists of different normal modes , of different phase and group velocities .

强地震前兆次声波三维动态频谱的最大振幅不仅与地震级别有关，而且与震源距离及深度都有关。

The maximal amplitude of the precursory infrasound is related to the magnitude of earthquake and the distance and depth of the epicenter .

频谱分析结果表明：（1）各流星产生的次声波大都很短暂，持续时间在1－5分钟内；

The analytic results show . ( 1 ) Infrasonic waves produced by meteor are mostly very short , lasting one to five minutes ;

当由一个声学阵接收次声波时，不同的简正波在声阵上产生不相同的时间延迟。

When an infrasonic wave is received by an acoustic array , the time delays of the different modes on the array are also different .