从中国地磁台网看1991年jerk  

Special feature of the 1991 jerk( Y ) in the Chinese region

作　　者：陈伯舫[1] 王文 范国华[1] 

机构地区：[1]中国地震局地球物理研究所

出　　处：《地震地磁观测与研究》1999年第1期33-38,共6页Seismological and Geomagnetic Observation and Research

摘　　要：从我国地磁台的Ｙ分量资料显示了１９９１年ｊｅｒｋ（Ｙ）在中国地区存在某些特殊性：ｊｅｒｋ出现的时间不一致。我国西北及部分华北地区ｊｅｒｋ出现在１９９１年，可是我国东南地区ｊｅｒｋ的出现时间滞后至１９９３～１９９４年，这两个地区间还有一过渡带（地区）。Some special features were revealed from the Y component data in the Chinese region:the occurrence year of the 1991 jerk( Y ) appears significant trending difference from one region to another region.The occurrence year is 1991 in the north west region of China and part of the Northern Chinese region.However,a time lag of about 2 or 3 years(1993～1994)exists in the south east Chinese region.Besides,there is a transition zone between the two regions stated above.

关 键 词：地磁场 年率变化 中国地区 地磁台 地震地磁 

分 类 号：P318.21[天文地球—固体地球物理学] P318.5[天文地球—地球物理学]