基于DDS技术的电磁扰动观测系统检查装置

英文篇名：An inspection equipment for electro-magnetic disturbance observation based on DDS technique
中文刊名：地震学报
英文刊名：Acta Seismologica Sinica
作者：张世中 ; 石航 ; 王兰炜 ; 胡哲 ; 刘大鹏 ; 魏连生 ; 鞠永
英文作者：Zhang Shizhong1) Shi Hang2) ; Wang Lanwei1) Hu Zhe1) Liu Dapeng1) Wei Liansheng3) Ju Yong3) 1) Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China 2) Earthquake Administration of Gansu Province ; Lanzhou 730000 ; China 3) Fengning Seismic Station of Hebei Province ; Chengde 068350 ; China
中文关键词：电磁扰动 ; DDS ; ML2035
英文关键词：electro-magnetic disturbance ; DDS ; ML2035
出版日期：2013-01-15
机构：中国地震局地壳应力研究所;甘肃省地震局;河北省地震局丰宁地震台;
年：2013
期：01
出版单位：地震学报

摘要

电磁扰动方法作为捕捉地震短临异常的较好方法之一,受到国内外地震学家的广泛重视.在没有电磁事件时,观测仪器记录到的是没有规则的背景电磁场,无法确定观测系统运作是否正常.本文按照《地震地电观测方法——电磁扰动观测》(DB/T35-2009)标准要求,研发了基于直接数字合成(DDS)技术的电磁扰动观测系统检查装置,目前已成功应用到了观测台站.台站每月定期启动检查装置,确定电磁扰动观测系统日常工作是否正常;在记录到一些异常事件后,也可以及时启动检查装置,为判别异常事件提供技术支持.
As one of the important means for earthquake precursor observation, electro-magnetic disturbance observation has drawn considerable attention of seismologists both at home and abroad. When no electro-magnetic events occurred, observation instruments could only record chaotic electro-magnetic field, so we could not confirm whether the instruments were working properly or not. For this reason, we developed an inspection equipment in accordance with the electro-magnetic disturbance observation standard enacted by China Earthquake Administration, and applied it at stations successfully. The inspection instrument is started each month to check regularly the electro-magnetic disturbance observation system, providing technical support for the identification of anomalous events.

引文

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