地震仪器定向与磁偏角

英文篇名：SEISMIC INSTRUMENT ORIENTATION AND MAGNETIC DECLINATION
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：吕永清 ; 蔡亚先 ; 程骏玲
英文作者：Lu Yongqing1 ; 2 ; 3) ; Cai Yaxian1 ; 2 ; 3) and Cheng Junling1) 1)Institute of Seismology ; CEA ; Wuhan 430071 2)Crustal Movement Laboratory ; Wuhan 430071 3)Wuhan Base of Institute of Crustal Dynamics ; CEA ; Wuhan 430071
中文关键词：地震仪器定向 ; 磁偏角 ; 罗盘 ; 磁北极 ; 地理北极
英文关键词：seismic instrument orientation ; magnetic declination ; compass ; magnetic north pole ; geographical north pole
出版日期：2006-05-30
机构：中国地震局地震研究所,地壳运动与地球观测实验室武汉430071,中国地震局地壳应力研究所武汉创新基地,武汉430071,中国地震局地震研究所,地壳运动与地球观测实验室,武汉430071,中国地震局地壳应力研究所武汉创新基地,武汉430071,中国地震局地震研究所,,武汉430071,武汉430071,武汉430071
年：2006
期：02
出版单位：大地测量与地球动力学

摘要

在安装地震仪器时,方位精度要求到6′,而在许多台站的摆房里预先没有划好方位线,故不得不借助罗盘定向,且必须用磁偏角修正。阐述了磁偏角的变化,提出了计算磁偏角的方法,推出了实用的计算公式。
Orientation,the accuracy should be 6′, for the seismic instruments is important. Because there is no orientation line in many seismic stations, people has to use the compass to find the earth’s north orientation and use the magnetic declination to correct the result. This paper describes the change of the magnetic declination and the method and the formation for calculating magnetic declination are presented as well.

引文

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