sporadic E

The data of 5 ionospheric vertical sounding stations before 4 earthquakes in Japan are analyzed. It is found that most of the critical frequencies of the E sporadic layer tended to decrease and the only few tended to increase around the epicenters before and after the earthquakes.

分析日本4次地震前5个电离层垂测站资料，发现地震前后震中附近夜间电离层偶发E层的临界频率f0ES值多数呈下降趋势，少数呈增加趋势。

Partial Sequence Testing and Analysis of a New Sporadic Hepatitis E Virus

一株新型散发型戊型肝炎病毒部分核苷酸序列测定与分析

Using the mechanism of vertical and horizontal wind shear, we simulate the forming process of the mid-latitude sporadic E led by tides and planetary waves.

然后，从垂直风剪切和水平风剪切的基本思想出发，对潮汐和行星波形成中纬Es的过程进行了数值模拟研究；

Effects on Sporadic E Layer of the Leonid Meteor Shower Bursting

狮子座流星雨爆发对偶发E层的影响

We know how Sporadic E affects VHF radio signals.

我们知道怎么分散E影响VHF无线电信号.

CONCLUSION Acute hepatitis E is sporadic in army personnel and serious attention should be paid to its prevention.

结论部队人群普遍存在散发性戊肝，应重视其预防。