首页 | 本学科首页   官方微博 | 高级检索  
     

紫金山天文台55 yr手绘黑子数据系统差分析
引用本文:孙雪兵,郑胜,何慧灵,曾曙光. 紫金山天文台55 yr手绘黑子数据系统差分析[J]. 天文学报, 2019, 0(1): 55-63
作者姓名:孙雪兵  郑胜  何慧灵  曾曙光
作者单位:三峡大学理学院
基金项目:中华人民共和国科技部基础性工作专项(2014FY120300);中国天文联合基金项目(U1531247;U1731124)
摘    要:对紫金山天文台(简称紫台)自1954年至2011年共55 yr的手描黑子图进行了数字化.将紫台太阳黑子相对数(PRSN)和黑子群数(PGSN)与国际太阳影响数据分析中心(SIDC)中的对应数据(月平均太阳黑子相对数(IRSN)和月平均黑子群数(IGSN))进行对比研究,发现:(1)紫台黑子数据与SIDC黑子数据有很强的正相关性,说明紫台黑子数据的可靠性;(2) PRSN和IRSN、PGSN和IGSN的系统偏差分别处于7%左右、5%左右,紫台数据与SIDC数据在活动周的极小期的差异性显著大于极大期;(3)紫台的视宁度从1995年开始变差,直接导致了PRSN (PGSN)与IRSN (IGSN)的比值明显变大,表明视宁度的变化影响了紫台黑子的观测质量.

关 键 词:太阳黑子  黑子相对数  黑子群数  系统差  视宁度

System Difference Analysis for the 55 Years' Hand-drawing Sunspot Data of Purple Mountain Observatory
SUN Xue-bing,ZHENG Sheng,HE Hui-ling,ZENG Shu-guang. System Difference Analysis for the 55 Years' Hand-drawing Sunspot Data of Purple Mountain Observatory[J]. Acta Astronomica Sinica, 2019, 0(1): 55-63
Authors:SUN Xue-bing  ZHENG Sheng  HE Hui-ling  ZENG Shu-guang
Affiliation:(College of Science,China Three Gorges University,Yichang 443000)
Abstract:The hand-drawing sunspot records of the Purple Mountain Observatory(PMO)from March 1954 to December 2011 are digitized completely.In this paper,we compare relative sunspot number(PRSN)and group sunspot number(PGSN)of the PMO with the corresponding data from Solar Influences Data Analysis Center(SIDC),namely the relative sunspot number of SIDC(IRSN)and the group sunspot number of SIDC(IGSN),respectively.It is found that there is a strong positive correlation between the sunspot data of the PMO and the SIDC,which indicates the reliability of the PMO sunspot data.When comparing PRSN with IRSN and contrasting PGSN with IGSN,the system difference is about 7 percent and 5 percent,respectively.The difference in the minimal period of solar active circle of the PMO and SIDC sunspot data is significantly greater than that in the maximal period.The visibility of the PMO became worse since 1995,which directly leads to a significant increase in the ratio of PRSN(PGSN)to the IRSN(IGSN).It indicates that the change of visibility affects the observation quality of the PMO sunspot data.
Keywords:sunspot  relative sunspot number  group sunspot number  system difference  visibility
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号