| 并置VLBI站相对形变率及其与VTRF2005结果的比较 |
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| 引用本文： | 杨志根,舒逢春.并置VLBI站相对形变率及其与VTRF2005结果的比较[J].中国科学院上海天文台年刊,2006(1):26-32. |
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| 作者姓名： | 杨志根 舒逢春 |
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| 作者单位： | 中国科学院上海天文台，中国科学院上海天文台 上海 200030 中国科学院测量与地球物理研究所，武汉 430077，上海 200030 |
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| 基金项目： | Acknowledgement The paper composition was mainly completed at Shanghai Galileo Industries Ltd. （SGI）. 680 Guiping Road, Shanghai 200233, China. We thank the SGI for kindly providing its good working facilities for the paper writing. |
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| 摘 要： | 对杨志根等人在2005年估计的全球6个并置VLBI站的相对形变率(特别是相对垂直形变率)结果与最近的VLBI全球解VTRF2005的相应结果作了比较。结果表明,北美Greenbank的NRAO20和NRAO85_3两个VLBI站之间每年3—4mm的相对垂直形变率和Westford的WEST- FORD和HAYSTACK两个VLBI站间每年1-2mm的相应结果可以进一步得到肯定;太平洋夏威夷岛的KOKEE和KAUAI两个VLBI站每年2～5mm的相对水平形变率和日本鹿岛的KASHIMA和KASHIM34两个VLBI站间每年1-2mm的相应结果也可以得到确认。然而,每年2—4mm的KASHIMA和KASHIM34站间的相对垂直形变率结果,在过去所有观测研究的结果中都被基本肯定,在VTRF2005中的结果中却几乎消失了,对其中可能的原因作了讨论。此外,对北美的FD-VL- BA和HRASO85两个VLBI站间的相对垂直形变率仍不能肯定,在不同的全球解中,FD-VLBA站的形变率解结果是基本稳定的,而HRASO85站在VTRF2005中的垂直形变率结果为(2．61±3．91) mm／a,与估计的结果符号相反,并且比在VTRF2003中的相应结果大了2．2mm／a,估计误差也大了近7倍。有关的结果还有待采用更新的资料进行讨论。
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| 关 键 词： | 地球参考架 并置VLBI站的相对形变率 VTRF005 |
| 收稿时间： | 07 20 2006 12:00AM |
| 修稿时间： | 08 2 2006 12:00AM |
RELATIVE DEFORMATION RATES BETWEEN CO-LOCATED VLBI STATIONS AND ITS COMPARISONS WITH VTRF2005 |
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| YANG Zhigen SHU Fengchun.RELATIVE DEFORMATION RATES BETWEEN CO-LOCATED VLBI STATIONS AND ITS COMPARISONS WITH VTRF2005[J].Annals of Shanghai Observatory Academia Sinica,2006(1):26-32. |
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| Authors: | YANG Zhigen SHU Fengchun |
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| Abstract: | The data of the relative deformation rates between stations in six co-located VLBI sites were used to compare with corresponding results obtained from solutions of the recent VLBI Terrestrial Reference Frame 2005 (VTRF2005). Comparisons led to the conclusions that the relative vertical deformation rates of 3 ~4 mm/a between NRA020 and NRA085_3 stations and of 1 ~2 mm/a between HAYSTACK and WESTFORD stations are re-confirmed. The relative horizontal deformation rates of 2 ~ 5 mm/a between KOKEE and KAUAI stations as well as that of 1 ~ 2 mm/a between KASHIMA and KASHIM34 stations are basically confirmed. However, a relative vertical deformation of about 2 ~ 4 mm/a between the KASHIMA and KASHIM34 stations, which has been confirmed in the previous studies, disappears in the VTRF2005. Some discussions are addressed. |
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| Keywords: | terrestrial reference frames - relative deformation rates between co-located VLBI sites - VTRF2005 |
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