西北地震学报
西北地震學報
서북지진학보
NORTHWESTERN SEISMOLOGICAL JOURNAL
2001年
2期
131-136
,共6页
地磁场总强度%自相关%相关系数%异常特征%短期预报
地磁場總彊度%自相關%相關繫數%異常特徵%短期預報
지자장총강도%자상관%상관계수%이상특정%단기예보
计算了河南省6个台站的相邻时段的地磁场总强度观测资料的自相关系数．分析了各台自相关系数的变化与地震的关系．各台的自相关系数曲线对应地震的效果较好．发震时间一般在异常低值后1～8个月．统计得出了各台所对应的地震震级与自相关系数异常面积和震中距的经验公式．利用3个以上台站的经验公式和交汇法，即可以求出震中位置和地震震级．经震例检验，该方法基本可行．
計算瞭河南省6箇檯站的相鄰時段的地磁場總彊度觀測資料的自相關繫數．分析瞭各檯自相關繫數的變化與地震的關繫．各檯的自相關繫數麯線對應地震的效果較好．髮震時間一般在異常低值後1～8箇月．統計得齣瞭各檯所對應的地震震級與自相關繫數異常麵積和震中距的經驗公式．利用3箇以上檯站的經驗公式和交彙法，即可以求齣震中位置和地震震級．經震例檢驗，該方法基本可行．
계산료하남성6개태참적상린시단적지자장총강도관측자료적자상관계수．분석료각태자상관계수적변화여지진적관계．각태적자상관계수곡선대응지진적효과교호．발진시간일반재이상저치후1～8개월．통계득출료각태소대응적지진진급여자상관계수이상면적화진중거적경험공식．이용3개이상태참적경험공식화교회법，즉가이구출진중위치화지진진급．경진례검험，해방법기본가행．
Autocorrelation coefficients of data of geomagnetic total intensity of neighboring periods from six stations in Henan province are calculated respectively.The relationship between the coefficients and earthquakes is analysed.The results show there is a good correlation between them.The original time is usually within 1～8 months after the lowest value of the coefficients.Empirical formulas between magnitude,anomalous area of the autocorrelation coefficients and epicentral distance for every station are statistically obtained.By using the empirical formulas of three or more stations and intersection method,the magnitude and epicenter of coming earthquake can be forecasted.The test results show the method is basically feasible.
