Comparative Analysis on Magnetic Survey in Tibetan Region Based on China
详细信息
- 责任者：You Wei (Earthquake Administration of Yunnan Province ; Kunming 650041 ; China) ; Shi Faqi
- 刊名：Journal of Seismological Research
- 出版年：2012
- 卷期：35(1)
- 关键词：地磁 ; geomagnetism ; 数字制图 ; digital cartography ; 中国 ; China
- 页码：p.98-103
- 图表：7 illus., 3 tables, 10 refs.
- 分类号：0400
- 出版序号：20130063
- issnNo：ISSN1000-0666
- isbnNo：CN53-1062/P
摘要
The authors expound geomagnetic stations selection and surveying work of twice geomagnetic survey for “2005.0 China geomagnetic charts” and “2010.0 China geomagnetic charts” in Tibet. It is proved that the quality of field survey is reliable by analyzing abundant data which is related to the demands of criterion. Through comparative analyzing the corrected data of the first and the second period, the authors conclude that the zero constant value line of geomagnetic declination offset toward west,and the deviant is about 0.4. The average increment of geomagnetic field total intensity is 206 nT, and the average increment of geomagnetic incidence is 0.45° from 2005 to 2010 in the surveying region of Tibet.