Asymmetry of Sunspot Distribution in KAU Solar Observations during 22 and 23 Solar Cycles

• 作者: Amerah Fouad Dhignah Fouad Yousef Kamal Hassan Mohammad Basurah
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 地球科学
• 关键词: SUNSPOTS LONG SOLAR Cycles North-south SOLAR Asymmetry
• 年，卷（期）: 2013,（4）
• 页码范围: 480-482
• 页数: 3页
• 分类号: P4

摘要

The King Abdul Aziz University (KAU) solar observations of Sunspot on daily passes from 1981 to 2009 are used to investigate the North-South asymmetry variation of the sunspot numbers and its area. We found that the asymmetry dominated to be southern during the last two solar cycles, which evidently exists following a long-term characteristic time scale. Our results were in compliance with the global asymmetry.