Effects of foreshortening on shallow sub-surface flows observed with local helioseismology

被引：16

作者：

Beckers, Jacques M. ^{[1
]}

机构：

[1] Univ Washington, Dept Astron, Seattle, WA 98195 USA

来源：

SOLAR PHYSICS | 2007年 / 240卷 / 01期

关键词：

D O I：

10.1007/s11207-006-0286-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

From the results given in a recent paper by Zaatri et al. (2006, Solar Phys. 236, 227) it is clear that foreshortening effects play a major role in estimating the magnitude and direction of meridional and other flows in the shallow solar sub-surface layers using local helioseismology. Using a different algorithm to account for these effects I arrive at a significantly different estimate for the meridional flows.

引用

页码：3 / 7

页数：5

共 12 条

[1] Changes in solar dynamics from 1995 to 2002 [J].

Basu, S ;

Antia, HM .

ASTROPHYSICAL JOURNAL, 2003, 585 (01) :553-565

[2] SOME COMMENTS ON THE LIMB SHIFT OF SOLAR LINES .3. VARIATION OF LIMB SHIFT WITH SOLAR LATITUDE, ACROSS PLAGES, AND ACROSS SUPERGRANULES [J].

BECKERS, JM ;

TAYLOR, WR .

SOLAR PHYSICS, 1980, 68 (01) :41-47

[3]

BECKERS JM, 2005, B AM ASTRON SOC, V37, P464

[4]

BECKERS JM, 1978, P WORKSHOP SOLAR ROT, P166

[5] Evolving submerged meridional circulation cells within the upper convection zone revealed by ring-diagram analysis [J].

Haber, DA ;

Hindman, BW ;

Toomre, J ;

Bogart, RS ;

Larsen, RM ;

Hill, F .

ASTROPHYSICAL JOURNAL, 2002, 570 (02) :855-864

[6]

HABER DA, 2006, SOHO 18 GONG 2006 HE

[7] Doppler measurements of the sun's meridional flow [J].

Hathaway, DH .

ASTROPHYSICAL JOURNAL, 1996, 460 (02) :1027-1033

[8] Meridional circulation variability from large-aperture ring-diagram analysis of Global Oscillation Network Group and Michelson Doppler Imager data [J].

Hernández, IG ;

Komm, R ;

Hill, F ;

Howe, R ;

Corbard, T ;

Haber, DA .

ASTROPHYSICAL JOURNAL, 2006, 638 (01) :576-583

[9] SEPARATION OF LARGE-SCALE PHOTOSPHERIC DOPPLER PATTERNS [J].

SNODGRASS, HB .

SOLAR PHYSICS, 1984, 94 (01) :13-31

[10] SOLAR ROTATION MEASUREMENTS AT MOUNT-WILSON .5. REANALYSIS OF 21 YEARS OF DATA [J].

ULRICH, RK ;

BOYDEN, JE ;

WEBSTER, L ;

SNODGRASS, HB ;

PADILLA, SP ;

GILMAN, P ;

SHIEBER, T .

SOLAR PHYSICS, 1988, 117 (02) :291-328

← 1 2 →