学术通告
2019年度
2018年度
2017年度
2016年度
2015年度
2014年度
2013年度
2012年度
2011年度
2010年度
规章制度
通知公告
·关于停止接待散客参观的公告 (2020-12-29)
·2020年“国家奖学金”获奖名单公示 (2020-10-26)
·中国科学院云南天文台食堂原材料供应商遴选公告 (2020-09-30)
·中国科学院云南天文台关于2020年度岗位聘用事宜的通知 (2020-09-03)
·昆明分院拟提名2020年度云南省科学技术奖励项目相关信息公示 (2020-07-06)
·中国科学院云南天文台2019-2020学年优秀学生初选名单公示 (2020-05-25)
·关于做好2020年度中国科学院院长奖学金初选工作的通知 (2020-05-02)
·关于做好2020年度朱李月华奖学金评选工作的通知 (2020-05-02)
·关于申报2020年度中国科学院大学—必和必拓奖学金的通知 (2020-01-14)
·计算太阳物理领域博士后招聘启事 (2020-01-06)
您现在的位置:首页 > 新闻资讯 > 学术通告 > 2016年度
【云台学术报告】2016年8月15日(周一)上午9:30-10:30 Y12会议室
2016-08-09  |  作者:  |  【  】 【打印】 【关闭

【学术报告】
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
报告题目:On the evolution of pre-flare dynamics in a 3-dimensional solar Active Region

报告人:Korsos, Marianna

报告人单位:SP2RC, University of Sheffield, England

报告时间:2016年8月15日(周一)上午9:30-10:30

报告地点:Y12会议室

报告语言:英文

报告摘要:

Here, we introduce and discuss the relevant properties and their capability to improve Space Weather forecasting of pre-flare behavioural patterns in typical solar Active Regions (ARs) by focusing on their evolution from the photosphere towards the solar atmosphere in 3D. The basis of proxy measure of our approach is the so-called, recently successfully introduced, weighted horizontal gradient of magnetic field (W_GM) defined between spots of opposite polarities closer to polarity inversion line(s) of an AR. The value and the temporal variation of W_GM is found to possess novel and potentially important diagnostic information about (i) the intensity of expected flares, (ii) the accuracy of onset time prediction, and (iii) whether a flare, with same energetic class in terms of the GOES classification, is followed by another one within an 18-hour window on the photosphere. Next, we will demonstrate how, by tracking the temporal evolution of W_GM, distance between opposite polarity spots and the associated net flux in the lower solar atmosphere evolves as function of height. We show and argue for that this latter temporal behaviour across the chromosphere-low corona has fundamentally new forecast capabilities. We found, that at a certain height the converging of opposite polarities begin much earlier than at the photosphere or at other heights. Therefore we propose and present a tool to identify the optimum height in the solar atmosphere for flare forecasting that may considerably increase the forecast time.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
请全体师生踊跃参加!

本通知也可以在云台学术报告网页看到:

http://www.ynao.cas.cn/xwzx/xstg/

申请安排学术报告的同事请参见台学术报告管理办法:

http://www.ynao.cas.cn/xwzx/xstg/gzzd/

抚仙湖太阳观测与研究基地

云南天文台学术委会  

邀请方联系人:徐稚

8月09日

 
©2010  中科院云南天文台    版权所有     滇ICP备05000010号-1    滇公网安备53011102001009号
地址:中国 云南省 昆明市 官渡区 羊方旺396号    邮编:650216    联系我们