Flow and Horizontal Displacements from Ring Diagrams

Details Flow and Horizontal Displacements from Ring Diagrams Flow and Horizontal Displacements from Ring Diagrams

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...504l.131s&link_type=abstract

Astrophysical Journal Letters v.504, p.L131

Astronomy and Astrophysics

Astronomy

51

Methods: Data Analysis, Sun: Oscillations, Sun: Rotation

Scientific paper

A new algorithm for analyzing ring diagrams from helioseismic data is presented. This method is applied to two months of Solar and Heliospheric Observatory/Michelson Doppler Imager data from 1996 May 24 through July 24 to study flows and to measure the ratio of the horizontal displacement to the vertical displacement for the oscillations. We find that (1) the rotation rate agrees well with that measured from global modes, extending the measurements closer to the surface; (2) there is a 20 m s-1 poleward meridional flow; (3) there are medium-scale velocity features persisting for several days; (4) the radial gradient of the near surface rotation rate decreases with latitude; and (5) meridional flow decreases with depth. The measured horizontal-to-vertical displacement ratio is in agreement with that expected from theoretical considerations.

Affiliated with

Also associated with

No associations

Rating

Flow and Horizontal Displacements from Ring Diagrams does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Flow and Horizontal Displacements from Ring Diagrams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flow and Horizontal Displacements from Ring Diagrams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-811557