乌鲁木齐台地磁Z分量日变幅及其逐日比地震前兆分析

英文篇名：THE OMEN ANALYSIS OF DAY AMPLITUDE AND ITS DAY TO DAY RATIO ABOUT THE GEOMAGNETISM Z COMPONENT IN URUMQI STATION
中文刊名：内陆地震
英文刊名：Inland Earthquake
作者：张翼 ; 杨福喜 ; 和锐
英文作者：ZHANG Yi1 ; YANG Fu-xi1 ; HE Rui2 (1.Earthquake Administration of Xinjiang Uygur Autonomous Region ; Urumqi 830011 ; Xinjiang ; China ; 2.Institute of Physical Geography ; CEA ; Beijing 100081 ; Beijing ; China)
中文关键词：地磁Z分量 ; 日变幅 ; 逐日比 ; 前兆异常
英文关键词：Geomagnetism Z component ; Day amplitude ; Day to day ratio ; The omen anomaly
出版日期：2007-03-30
机构：新疆维吾尔自治区地震局,新疆维吾尔自治区地震局,中国地震局地球物理研究所新疆乌鲁木齐830011,新疆乌鲁木齐830011,北京100081
年：2007
期：01
出版单位：内陆地震

摘要

利用乌鲁木齐台地磁垂直分量1980~2004年的25年时均值资料计算日变幅及其逐日比,比较了日变幅与日变幅逐日比法对应地震的效果,发现日变幅逐日比异常后对应地震的效果比日变幅异常对应地震的效果更佳,在二者的共同的预报时段内,地震对应率更高。Z分量日变幅逐日比值超过5倍均方差线后与周围270 km范围内的MS5地震对应较好,且通过了具有97.5%置信水平的R值评分检验,表明具有较好的预报效能。
Using the hour mean value data of geomagnetism vertical component about 25 years from 1980 to 2004 in Urumqi station to compute day change amplitude and the day to day ratio,we contrasted the effect of corresponding earthquakes between the day change amplitude and the day to day ratio method.We find that the corresponding result of the day to day ratio anomaly is better than one of the day change amplitude anomaly.In the common forecast time of them,the corresponding ratio of earthquakes is higher.After the ratio value of Z component about day to day ratio of day amplitude surpasses 5 time of mean-square deviation,it is better that the corresponding earthquakes with MS5 in the range of 270 km around them.And it passed R value test with 97.5% level.It showed that it had the good potency to forecast earthquakes.

引文

[1]丁鉴海,卢振业,黄雪香.地震地磁学[M].北京:地震出版社,1994,237-245.
    [2]冯志生,王建宇,蒋延林,等.地磁垂直分量日变幅逐日比及其与地震关系的探讨[J].华南地震,2001,21(2):20-26.
    [3]王文.地磁日变规律的破坏与地震的关系研究[J].地震地磁观测与研究,2003,24(1):1-6.
    [4]冯志生,王建宇,蒋延林.地磁Z分量整点值空间相关法在江苏地区地震预报中的初步应用[J].地震学刊,1998,(3):13-18.
    [5]曾小苹,续春荣,赵明,等.地球磁场对太阳风的加卸载响应与地震[J].地震地磁观测与研究,1996,17(1):49-53.
    [6]吴增.地磁日变化与谐波振幅比的关系[J].地震战线,1974,(2):17-21.