| 近年地磁场的长期变特征 |
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| 引用本文： | 解用明,高登平,王艳荣,鞠永,韩和平,郭学增,郭建芳. 近年地磁场的长期变特征[J]. 华北地震科学, 2007, 25(1): 1-5 |
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| 作者姓名： | 解用明 高登平 王艳荣 鞠永 韩和平 郭学增 郭建芳 |
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| 作者单位： | 河北省地震局,河北,石家庄,050021;河北省地震局红山地震台,河北,隆尧,054000;河北省地震局后土桥地震台,河北,昌黎,066611;河北省地震局丰宁地震台,河北,丰宁,068350;河北省地震局阳原地震台,河北,阳原,075800;河北省地震局兴济地震台,河北,沧县,061021 |
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| 摘 要： | 利用红山、后土桥等台近30年的的地磁绝对观测资料,对F、H、Z各分量进行了分析,对Z分量的年速率进行了研究。结果:1999年和2000年F总场和Z分量长期变相继出现了转折,结束了逐年上升的变化趋势,但局部地区近两年有所回升。而H分量趋势没有变化,依照原来的趋势在下降;Z分量年速率的减缓变化往往与华北地区较强地震有关。
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| 关 键 词： | 长期变 年速率 转折 华北地区 |
| 文章编号： | 1003-1375（2007）01-0001-05 |
| 收稿时间： | 2005-11-24 |
| 修稿时间： | 2005-11-24 |
Characteristics of long term variation of geomagnetic field in recent years |
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| XIE Yong-ming, GAO Deng-ping, WANG Yan-rong, JU yong, GUO Xue-zeng, GUO Jian-fang. Characteristics of long term variation of geomagnetic field in recent years[J]. North China Earthquake Sciences, 2007, 25(1): 1-5 |
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| Authors: | XIE Yong-ming GAO Deng-ping WANG Yan-rong JU yong GUO Xue-zeng GUO Jian-fang |
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| Affiliation: | 1. Earthquake Administration of Hebei Province, Shijiazhuang 050021, China; 2. Hongshan Seismostation, Longyao 054000, Hehei Province, China; 3. Houtuqiao Seismostation, Changli 066611, Hebei Province, China; 4. Fengning Seismostation, Fengning 068350, Hebei Province, China; 5. Yangyuan Seismostation, Yangyuan 075800, Hebei Province, China; 6. Xingji Seismostation,Cangxian County, Hebei Province,China |
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| Abstract: | The F,H and Z component of geomagnetic data observed by some seismostations in recent 30 years,such as Hongshan,Houtuqiao,are analyzed,and the annual rate of Z component is also studied.The results show: ended the yearly ascending tendency,the long term variation of F and Z component showed a turning respectively in 1999 and 2000,but recovered a little in some local region in recent two years;with a descending tendency,the H component did not change.The slow down of variations in Z component is usually relevant to the relatively strong earthquake in North China area. |
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| Keywords: | long term variation annual rate turning North China area |
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