In the wave model test,the study of action of wind on structure will be involved in the determination of wind speed scale.

Study on the relationship between abnormal charge of wave velocity ratio in Beijing area and medium earthquakes in Capital zone;

The abnormal change of wave velocity ratio in northwest of Beijing before Zhangbei 6.2 earthquake;

By measuring the velocities of the P-wave and S-wave in three orthotropic directions including parallel and vertical directions to the stratum of the rock samples for slate,phyllite,mylonite and metasandstone,and based on the wave velocities of other rocks from the relevant studies,the anisotropic effect of wave velocity ratio of the P-wave and S-wave for most rocks is put forward.

Characteristics of V_P/V_S ratio in the series of Jiujiang-Ruichang earthquake;

0 occurred in Bohai Sea area (37°─39°10 N, 118°─121°30 E) from January, 1970 to August, 1993 using the V_p/V_s ratio calculation and error formulas in the literature 1 from the references are calculated and T-test for the results is made.

Starting with the method and theory of multistation velocity ratio calculation,we thoroughly analyzed the differences between velocity ratios calculated by different formulae.

This paper calculates the velocity ratios of the P-waves and S-waves of earthquakes of MI≥2.

2-D crustal structure as well as velocity ratio ( v __P/ v __S ) is revealed by processing S-wave data from two wide-angle reflection/refraction profiles in and around Jiashi in the northeastern Pamirs, with the results of P-wave data taken into consideration.