Non-tidal variations in the deflection of the vertical at Beijing Observatory

	Non-tidal variations in the deflection of the vertical at Beijing Observatory
	Li, ZX ; Li, H; Li, YF ; Han, YB
刊名	JOURNAL OF GEODESY
	2005-05-01
卷号	78 期号:10 页码:588-593
关键词	astrometry gravimetry deflections of the vertical plumbline variations
英文摘要	At Beijing Observatory both astrometric and gravimetric observations are available to study the non-tidal variations in the deflections of the vertical ( or non-tidal plumbline variations, PLVs). From repeated gravimetric observations performed in a network around the observatory, the PLVs at Beijing Observatory during the period 1987.0 - 1996.0 have been calculated. After comparison with the observational residuals ( which also contain the PLV components) of the photoelectric astrolabe located at the observatory, the accuracy of the obtained PLV results has been examined. It is shown that, due to the asymmetry of the gravimetric network, the qualities of the two different PLV components are not equal. The longitude component of the PLV at Beijing has been determined successfully, to be of the order of 0.0500, with a contribution of about 0.0200 in the inter-annual time scale. The result for the latitude PLV component is not good enough to draw a conclusion. Although both techniques are able to measure the PLV, the result of the determination depends very much on the availability of observational data.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Geochemistry & Geophysics ; Remote Sensing
研究领域[WOS]	Geochemistry & Geophysics ; Remote Sensing
关键词[WOS]	SOUTHERN OSCILLATION INDEX ; Z-TERM ; STATIONS ; TIME
收录类别	SCI
语种	英语
WOS记录号	WOS:000228855100002
公开日期	2010-07-30
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/10498]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.Chinese Acad Sci, Shanghai Observ, Shanghai 200030, Peoples R China 2.China Seismol Bur, Inst Seismol, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Natl Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Li, ZX,Li, H,Li, YF,et al. Non-tidal variations in the deflection of the vertical at Beijing Observatory[J]. JOURNAL OF GEODESY,2005,78(10):588-593.
APA	Li, ZX,Li, H,Li, YF,&Han, YB.(2005).Non-tidal variations in the deflection of the vertical at Beijing Observatory.JOURNAL OF GEODESY,78(10),588-593.
MLA	Li, ZX,et al."Non-tidal variations in the deflection of the vertical at Beijing Observatory".JOURNAL OF GEODESY 78.10(2005):588-593.