Meridional Flows from Ring Diagram Analysis

Meridional Flows from Ring Diagram Analysis
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环图分析的子午流

DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
The SOI Ring Diagram Team
The SOI Ring Diagram Team
中科院分区:
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文献类型:
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作者:
I. González Hernández;J. Patrón;R. Bogart;The SOI Ring Diagram Team

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为了寻找太阳包层中的纬向环流,我们对太阳表面的一组小区域进行了环图分析。日震数据包括太阳振荡调查/迈克尔逊多普勒成像仪Dopplergrams采取了约50小时的时间跨度(约3000图像),1998年6月20日至22日。所研究的区域包括以赤道为中心的纬度115°和经度30°。在r/ R=0.97和表面之间存在向极流动。在这个深度范围内,没有证据表明这些纬向流的返回路径。这些流动的时间稳定性将在分析使用相同技术获得的天气图后进行讨论。
In order to search for meridional circulation in the solar envelope, we have applied ring diagram analysis to a set of small regions over the surface. The helioseismic data consist of Solar Oscillation Investigation/Michelson Doppler Imager Dopplergrams taken over a time span of about 50 hr (~3000 images) on 1998 June 20-22. The regions studied cover 115° in latitude centered on the equator and 30° in longitude. We find poleward flows between r/ R=0.97 and the surface. There is no evidence in this depth range for the return path of these meridional flows. The temporal stability of these flows will be discussed after the analysis of a synoptic map obtained using the same technique.