新岛台地电场的潮汐响应与地震

doi:10.3321/j.issn:0001-5733.2006.06.022

CORC > 北京大学 > 地球与空间科学学院

	新岛台地电场的潮汐响应与地震; Earthquakes and tide response of geoelectric potential field at the Niijima station
	黄清华 ; 刘涛
刊名	地球物理学报
	2006
关键词	潮汐地电场地震 tide geoelectric potential field earthquakes
DOI	10.3321/j.issn:0001-5733.2006.06.022
英文摘要	本文通过采用频谱分析和BAYTAP-G方法对位于日本伊豆群岛的新岛台跨度达三年(1998～2000年)的地电场的观测资料进行了分析研究,对该台地电场的潮汐响应进行了定量提取与分析,得到了地电场潮汐响应的一些主要特征,例如除了存在全日分潮、半日分潮等不同周期的潮汐成分外,还呈现出明显的半月、半年等不同周期的活动规律.进一步的定量分析显示与新岛台若乡(Wakago)关联的测线的潮汐响应在2000年夏季的群发地震前呈现出不同程度的异常变化,而在所分析的另一条测线中并未检测到类似的异常,这也许可以成为地震电磁信号的"选择性"现象的一种新的证据.; We adopted the spectrum analysis method and the BAYTAP-G method to analyze the geoelectric potential data at the Niijima station during 1998 similar to 2000. After the quantitative analysis of the tide response of geoelectric potential changes at the above station, we obtained some main characteristics of the tide response. Besides the tidal components with various periods such as diurnal tide, semi-diurnal tide, and so on, semimonthly and semi-yearly variations of tide response were also detected from the geoelectric potential data at the Niijima station. Further quantitative analysis showed that some anomalous tide response for the surveying dipoles associated with the Wakago site occurred prior to the earthquake swarm in the summer of 2000, while no clear anomalous tide response for another surveying dipole at the same station. The above result may become a kind of new evidence of the so - called "selectivity" phenomena of seismic electromagnetic signals.; 国家自然科学基金; 中国石油天然气集团公司资助项目; 国家自然科学基金; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 29; 6; 1745-1754; 49
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/251310]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	黄清华,刘涛. 新岛台地电场的潮汐响应与地震, Earthquakes and tide response of geoelectric potential field at the Niijima station[J]. 地球物理学报,2006.
APA	黄清华,&刘涛.(2006).新岛台地电场的潮汐响应与地震.地球物理学报.
MLA	黄清华,et al."新岛台地电场的潮汐响应与地震".地球物理学报 (2006).