【摘要】 通过计算地震活动能量距平场,研究了黑龙江及其附近区域3次中等地震前的研究区能量场在地震孕育过程中相关的物理时空变化特征。结果显示,地震活动能量场的时间曲线呈较大幅度上升可能预示了发生中强震的时间段,而地震活动能量场等值线高值变化区对应了可能发生M5以上地震的区域。结合热红外卫星长波辐射(OLR)值发现,地震前能量场等值线高值变化区升温明显,表明研究区能量场处于能量积累(释放)增强的状态。这些特征的提取,对该地区中强地震的中短期预测有一定的指导意义。更多还原

【Abstract】 Through the calculation of seismic activity energy field,we research the space-time variation characteristics to during the process of earthquake preparation before three medium earthquakes of Heilongjiang and surrounding region.The result shows that the energy field time curve upward change with large amplitude may mean the moderatestrong earthquake is going up,while the high values of isogram may indicate the seismic-risk region.The temperature rises obviously in the energy field before earthquakes(by OLR values),indicating that the energy field accumulation(release) is enhancing.These features will be useful for earthquake forecast of moderate-strong earthquakes in Heilongjiang and surrounding area.更多还原