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AR模型间隔模式和迭代模式预报地球定向参数对比
地球定向参数预报 AR 模型 间隔模式 迭代模式
2013/4/9
针对自回归 (AR) 模型，分别采用间隔模式和迭代模式，对国际地球自转和参考系服务(IERS) 的 EOP 08C04 数据序列作预报计算，并统计预报精度，对比分析两种预报模式的适用情况。结果表明，AR 模型两种预报模式各有特点，具体表现为：在数据利用率以及计算速度方面，间隔模式数据利用率低，计算速度快，而迭代模式数据利用率高，但计算速度较慢。对于参数预报适用方面，间隔模式较适合于 PMX、PMY...
Multi-Wavelength Observations of a Flux Rope Failed in the Eruption and Associated M-Class Flare from NOAA AR 11045
coronal loops magnetic eld ux rope magnetic reconnection
2011/9/27
We present the multi-wavelength observations of a flux rope that was trying to erupt from NOAA AR 11045 and the associated M-class solar flare on 12 February 2010 using space and ground based observat...
加权最小二乘法与AR组合模型在极移预测中的应用研究
极移预测 加权最小二乘法 AR模型 权函数
2012/9/12
分析了极移预测的重要性,介绍了目前极移预测的主要方法。根据目前常用预测模型中周年项和钱德勒项的时变性质,在极移预测方法上进行了一种新的尝试,即利用加权最小二乘法与AR组合模型对极移进行预测。为进一步优选模型中的加权函数,设计了3种选权方案,并通过对比,给出了极移X、Y序列各自合适的选权方案。通过实验最终验证了这种新方法对极移预测的精度提高有一定作用,可作为极移预测的一种参考方法;但该方法作为极移预...
Comparison of Energies Between Eruptive Phenomena and Magnetic Field in AR 10930
Energies Eruptive Phenomena Magnetic Field
2011/1/11
We present a study comparing the energy carried away by a coronal mass ejection (CME) and the radiative energy loss in associated flare plasma, with the decrease in magnetic free energy during a relea...
Post-flare evolution of AR 10923 with Hinode/XRT
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
Flares are dynamic events which involve rapid changes in coronal magnetic topology end energy release. Even if they may be localized phenomena, the magnetic disturbance at their origin may propagate a...
Study of the symbiotic star AR Pavonis。
Using a semiclassical approach, we have calculated electron−, proton−,
and He III−impact line widths and shifts for 9 Ar VIII transitions as a
function of temperature and perturber...
MEASURED, CALCULATED AND PREDICTED STARK WIDTHS OF THE SINGLY IONIZED C, N, O, F, Ne, Si, P, S, Cl AND Ar SPECTRAL LINES
plasma spectroscopy ionized emitters Ar SPECTRAL LINES
2009/3/18
In order to find reliable Stark width data, needed in plasma spectroscopy,
comparision between the existing measured, calculated and predicted
Stark width values was performed for ten singly ionized...