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Scaling Properties of Solar Magnetic and Velocity Fields

Scaling Properties of Solar Magnetic and Velocity Fields
太阳磁场和速度场的标度特性
批准号:
9628882
负责人:
Ana Cadavid
金额:
$17.74万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1996
资助国家:
美国
项目状态:
已结题
起止时间:
1996-09-01 至 2000-06-30

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中文摘要
翻译
PI将研究太阳磁场和速度场的空间和时间结构的标度对称性,以追踪它们在对流太阳等离子体中的物理起源。 首先,她将研究多重分形对称适用于太阳的物理尺度和磁场强度的范围。 小波变换将定位磁场强度表现出奇异行为的图像位点。 PI将观察这些站点和未解决的磁结构(如磁通管)之间的关系。 然后,她将利用磁矢量场方向上涨落的标度对称性,区分零场或横向场的组态与快速反转场的组态。 通过检查多普勒图像,PI将确定缩放的形式,从而确定光球层中的传输。 最后,PI将检查一系列有效的模型,用于产生观测到的磁场结构和缩放对称性。
英文摘要
The PI will study the scaling symmetry of spatial and temporal structure of solar magnetic and velocity fields to trace their physical origins in the convective solar plasma. First, she will investigate the range of physical scales and magnetic filed strengths over which multifractal symmetry applies on the Sun. Wavelet transforms will localize image sites where the magnetic field strength appears to show singular behavior. The PI will observe the relation between these sites and unresolved magnetic structures, such as flux-tubes. She will then distinguish between zero or transverse field configurations versus rapidly reversing fields using the scaling symmetry of fluctuations in the direction of the magnetic vector field. By examining Doppler images, the PI will determine the form of scaling and, thus, of the transport in the photosphere. Finally, the PI will examine a diverse array of effective models for the generation of observed magnetic field structuring and scaling symmetry.
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会议论文
Scaling Dynamics of Photospheric Fields and the Problem of Energy Release in the Upper Solar Atmosphere
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