格尔木台地磁短周期变化与周围地震的对应关系

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英文篇名：The correponding relationship between the short period geomagnetic variations and the surrounding enrthquakes at Seismic Statio of Golmud 中文刊名：地震地磁观测与研究 英文刊名：SEISMOLOGICAL AND GEOMAGNETIC OBSERVATION AND RESEARCH 作者：邱鹏程 ; 沈德秀 ; 赵甲生 ; 周海生 ; 林云芳 ; 曾小苹 ; 赵明 ; 续春荣 英文作者：Qiu Pengcheng 1) ; Shen Dexiu 1) ; Zhao Jiasheng 1) ; Zhou Haisheng 1) ; Lin Yunfang 2) ; Zeng Xiaoping 2) ; Zhao Ming 2) and Xu Chunrong 3) 1)Seismic Station of Golmud ; Qinghai Province 816003 ; China 2)Institute of Geoph 中文关键词：地磁短周期变化 ; 转换函数 ; 近震 英文关键词：short period geomagnetic variation ; transfer function ; local earthquake 出版日期：1999-02-25 机构：中国青海格尔木地震台,中国地震局地球物理研究所,中国地震局地壳应力研究所 年：1999 期：01 出版单位：地震地磁观测与研究

摘要

计算分析了位于青藏高原东北部的格尔木地磁台１９８７年１月至１９９７年３月的地磁周期Ｔ＝９～２００ｍｉｎ的复转换函数Ａ的模｜Ａ｜、Ｂ的模｜Ｂ｜、总方差σｚ的帕金森矢量或韦氏矢量，并将其与同期格尔木周围３５０ｋｍ范围内ＭＳ≥５．０的８个地震进行了对比研究，发现周期为９，７５ｍｉｎ的｜Ａ｜、周期为９ｍｉｎ的｜Ｂ｜在震前有明显异常，总方差σｚ亦有一定的对应效果，帕金森或韦氏矢量在震前指向震中位置。
In this paper,the consecutive monthly variations of complex transfer function moduli |A| and |B| of geomagnetic field in the periods of T =9～200 min,the total variance σ z ,the magnetic azimuth α p and the Parkinson or Wiess vector from Jan.1987 to Mar.1997 at Seismic Station of Golmud,which is located in the northeast of Qinghai Plateau,were calculated and analyzed.They were compared and studied with eight earthquakes( M S≥5 0)occurred at the same time within the range of 350 km around the station.It was found that |A| of period 9,75 min and |B| of 9 min were strikingly anomalous prior to the earthquakes.The total variance σ z and the local earthquakes also have a certain corresponding effect.The Parkinson or Wiess vector pointed to the epicenters before these earthquakes.

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