文章摘要
孙君嵩,叶青,王丽,章鑫,尹欣欣.基于GEI方法对苏皖地区地电活动指数的可靠性研究[J].地震工程学报,2020,42(2):453-459. SUN Junsong,YE Qing,WANG Li,ZHANG Xin,YIN Xinxin.Reliability of Geoelectric Activity Indexes in Jiangsu andAnhui Provinces Based on GEI Method[J].China Earthquake Engineering Journal,2020,42(2):453-459.
基于GEI方法对苏皖地区地电活动指数的可靠性研究
Reliability of Geoelectric Activity Indexes in Jiangsu andAnhui Provinces Based on GEI Method
投稿时间:2019-06-20  
DOI:10.3969/j.issn.1000-0844.2020.02.453
中文关键词: 地电场;地电指数;地电扰动;地磁场;地磁指数;地磁扰动
英文关键词: geoelectric field;geoelectric index;geoelectric disturbance;geomagnetic field;geomagnetic index;geomagnetic disturbance
基金项目:江苏省地震局青年科学基金(201910);国家自然科学基金(41374080);中国地震局专项:全国地球物理台网数据跟踪分析与产出;中国地震局监测、预报、科研三结合课题(3JH-202001027)
作者单位E-mail
孙君嵩 江苏省地震局, 江苏 南京 210004  
叶青 中国地震台网中心, 北京 100045 qing_gef@126.com 
王丽 江苏省地震局, 江苏 南京 210004  
章鑫 广东省地震局, 广东 广州 510070  
尹欣欣 甘肃省地震局, 甘肃 兰州 730000  
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中文摘要:
      使用地电扰动幅度与静日变化幅值比的地电活动指数(GEI)计算方法,连续计算江苏、安徽两省6个地电场台站2018年第一季度的单台地电指数D、平均地电指数Ds。同时将地电指数D、Ds与单台地磁指数K、平均地磁指数K(即[K+0.5])对比得到:86.48%的指数D与指数K完全相同或仅相差1,89.44%的指数Ds与指数K完全相同或仅相差1。两类电、磁指数的高度吻合说明:(1)连续产出的地电指数是可靠的。(2)地电指数D、Ds可以量化界定地电场活动水平。极个别的地电指数D、Ds与地磁指数KK仍存在一定差异,这与地电场台站观测有关,提升地电场观测资料的质量能更好地确定地电指数。(3)地电指数与地磁指数相互弥补能更准确地确定地球电磁活动水平,其在相关的地球科学技术领域有广泛的应用前景。
英文摘要:
      In this study, in the first quarter of 2018, the single-station geoelectric index D and multi-station average geoelectric index Ds were determined using the geoelectric index (GEI) method based on observation data of 6 stations in Jiangsu and Anhui Provinces. Comparing the index D and Ds with single-station geomagnetic index K and average geomagnetic index K of the 6 stations, it was found that: 86.48% of D indexes are correspondingly the same with K indexes or have only a difference of 1, and 89.44% of Ds indexes are correspondingly the same with K indexes or have only a difference of 1. The high consistency between two types of indexes showed that: (1) the geoelectric index calculated by this method is reliable; (2) the electromagnetic activity level can be quantitatively identified by geoelectric indexes D and Ds. Only a few of the D and Ds indexes have a slight difference from the K and K indexes, but the problem can be well solved if the measurement accuracy of geoelectric field is improved or the measurement data from more stations are used in the calculation; (3) In the future, the mutual compensation and reference between the geoelectric and geomagnetic indexes will more accurately identify the earth’s electromagnetic activity level in mainland China. This will have a wide prospect of application in the related field of earth science and technology.
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