preliminary forecasting meaning in Chinese

初步预测

In this paper , according to the periodically active characteristics shown in the historical earthquake data in this region since 1900 , we describe the rule of seismicity with sine function and furthermore make a preliminary forecast of the seismicity intensity and the developing trend in northeast china till the year of 2008 by using the periodogram of time sequence and other analytical methods
摘要根据东北地区1900年以来的历史地震资料所显示的周期性活动特点，用正弦函数描述其地震活动规律，并结合时间序列的周期图及其他一些地震活动性分析方法，对该地区未来1 ~ 3年地震活动发展趋势和地震强度作了初步预测。