Meridional flows from ring diagram analysis

被引：0
|
作者：
Hernández, IG [1 ]
Patrón, J [1 ]
Bogart, RS [1 ]
机构：
[1] Inst Astrofis Canarias, Tenerife 38200, Spain
来源：
SOHO 6/GONG 98 WORKSHOP ON STRUCTURE AND DYNAMICS OF THE INTERIOR OF THE SUN AND SUN-LIKE STARS, VOLS 1 AND 2: VOL 1: SESSIONS I-III, VOL 2: SESSIONS IV-VI | 1998年 / 418卷
关键词：
helioseismology; meridional flows;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Meridional circulation from the equator to the poles is found from ring diagram analysis of helioseismic data. The data. consist of SOI/MDI Dopplergrams taken every minute during its Dynamics Program in 1996. The time span used in this work is about 50 hours (similar to 3000 images). Studying 15-deg square sections centered at latitudes 0 degrees, +/-10 degrees, +/-15 degrees, +/-20 degrees, +/-30 degrees, +/-40 degrees, +/-50 degrees, and Carrington longitudes 90 degrees and 105 degrees, we find a remarkable behaviour in the meridional component of the horizontal velocity fields, with poleward flows between r/R-. = 0.97 and the surface. There is no evidence in this depth range of the return path of the meridional flows. The temporal stability of these flows is discussed in light of a synoptic map obtained using the same technique.
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收藏
页码：781 / 786
页数：6
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