Parameters Derived from the SDO/HMI Vector Magnetic Field Data: Potential to Improve Machine-learning-based Solar Flare Prediction Models
Parameters Derived from the SDO/HMI Vector Magnetic Field Data: Potential to Improve Machine-learning-based Solar Flare Prediction Models
复制标题
从 SDO/HMI 矢量磁场数据导出的参数：改进基于机器学习的太阳耀斑预测模型的潜力
DOI：
10.3847/1538-4357/ab441b
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发表时间：
2019-10
期刊：
影响因子：
--
通讯作者：
Liu Yang
中科院分区：
文献类型：
--
作者：
Wang Jingjing;Liu Siqing;Ao Xianzhi;Zhang Yuhang;Wang Tieyan;Liu Yang
It is well established that solar flares and coronal mass ejections (CMEs) are powered by the free magnetic energy stored in volumetric electric currents in the corona, predominantly in active regions (ARs). Much effort has been made to search for eruption-related signatures from magnetic field observed mostly in the photosphere; and the signatures are further employed for predicting flares and CMEs. The parameters in the Space-weather HMI Active Region Patches (SHARP) data from the Solar Dynamics Observatory/HMI observation of vector magnetic field are designed and generated for this purpose. In this paper, we report research done on modification of these SHARP parameters with an attempt to improve flare prediction. The newly modified parameters are weighed heavily by magnetic polarity inversion lines (PIL) with high magnetic gradient, as suggested by Schrijver, by multiplying the parameters with a PIL mask. We demonstrate that the number of the parameters that can well discriminate erupted and nonerupted ARs increases significantly by a factor of two, in comparison with the original parameters. This improvement suggests that the high-gradient PILs are tightly related with solar eruption that agrees with previous studies. This also provides new data that possess potential to improve the machine-learning-based solar flare prediction models.
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影响因子：
4.8
作者：
Sander, J;Ester, M;Xu, XW
通讯作者：
Xu, XW
DOI：
10.1088/2041-8205/782/1/l10
发表时间：
2014-01
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
Tibor Torok;J. Leake;Viacheslav S. Titov;V. Archontis;Zoran Miki'c;M. Linton;K. Dalmasse;Guillaume Aulanier;B. Kliem
通讯作者：
Tibor Torok;J. Leake;Viacheslav S. Titov;V. Archontis;Zoran Miki'c;M. Linton;K. Dalmasse;Guillaume Aulanier;B. Kliem
影响因子：
2.8
作者：
W. Pesnell;B. Thompson;P. Chamberlin
通讯作者：
W. Pesnell;B. Thompson;P. Chamberlin
DOI：
10.1086/595550
发表时间：
2008-11
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
G. Barnes;K. Leka
通讯作者：
G. Barnes;K. Leka
影响因子：
2.8
作者：
B. Welsch;S. Christe;J. McTiernan
通讯作者：
B. Welsch;S. Christe;J. McTiernan