【摘要】 地震预警是利用地震预报的骨干指标,采用层次分析法,计算分析在区域(分区)和震级已确定的情况下发生地震的紧迫程度。通过把华北地区分为不同的预警区域(南部、西北部和东北部),建立区域地震震情指标预警模型,确定了华北地区14个地震预警判据,利用层次分析法,通过震情指标的相应运算,建立区域指标预警系统,根据预警等级判断标准得出每次震例的红、橙、黄、蓝预警等级。最后对华北地区不同区域的强震进行回顾性检验,在震前得到预警等级较为理想,为政府采取相应防震和应急措施提供依据。更多还原

【Abstract】 Earthquake early warning is defined as using the main indexes of earthquake prediction to calculate and analyze the urgency of a given-magnitude earthquake by the analytic hierarchy process(AHP) for a given region(or sub-region).We divide the North China into 3 earthquake-early-warning regions—the South,the Northwest,and the Northeast,and build early-warning models of indexes of regional seismic situations to determine 14 early-warning criterion in North China.Using AHP,and performing the calculation of indexes of seismic situations,we build an early-warning system of regional indexes and get the early warning level—Red,Orange,Yellow,and Blue for each earthquake by early-warning criterion.Finally,we check the early-warning system with the historical strong earthquake in North China and get the ideal result.更多还原