摘要
本研究报告以非线性孕震系统在爆发前夕的外敏性为物理基础,对大气扰动下的岩体失稳突变问题进行了初步的理论探讨,不仅给出了气-地耦合的一般表示,更连续分析了云南近35年来大气压力场演化与场内近百次5级以上地震(内含19次6级,4次7级)的基本关系,系统地证明了绝大部分强震都是在其上覆大气涨落加剧及与邻区气压梯度增大时突然爆发的,这种自然共性的揭示,既是对理论的认证,也丰富了短临地震预报的科学依据。
In this study report, tubing the out-sensitivity in unlinear earthquake developing system beforethe eve of break out as the physics hots, a problem of sudden cadge on rock bady out-of-Stabilizationunder the situation of atmospheric disturbance hat been primatily probed into. The general expressionsof atmosphere-earth coupling and critical condition of the coupling hsve been given. The basicrelation between atmospheric pressure field evolution the near one hundred earthquakes with M≥5.0 (including 19 earthquakes with M=6 and 4 with M=7) have been studied using 35-year continuous beta in Yunnan. It has been systematically proved that mOSt of the strong earthquakes had happened atthe time when atmospheric fluctuation, random disturbance around mean values, suddenly increasedto a certain threshold and gradient of atmospheric pressure comparing with neighboring area obviouslywent up.Above theoretic seeking and the revelation of atmosphere earth related general character have Provided scientific bases for short-imminent earthquake from the angle of mechanics of earthquakegenerating.
出处
《高原地震》
1994年第4期1-14,共14页
Plateau Earthquake Research
基金
地震科学联合基金
关键词
气-地耦合
气压场
涨落
临震预报
Atmosphere-earth coupling Atmospheric pressure field Fluctuation Impending earthquake Prediction