Dynamics and Properties of Supergranulation from TRACE Observations

Details Dynamics and Properties of Supergranulation from TRACE Observations Dynamics and Properties of Supergranulation from TRACE Observations

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.3718s&link_type=abstract

American Astronomical Society Meeting 204, #37.18; Bulletin of the American Astronomical Society, Vol. 36, p.712

Other

Scientific paper

Using a unique set of white-light images taken by the Transition Region and Corona Explorer (TRACE) satellite over a 7 day period in April 2000, we investigate the properties and evolution of supergranulation. A 384x384 arcsec area of the solar photosphere was observed as it rotated from Stonyhurst longitude 45E to 45W. Granulation is well defined in these images which were taken at a 60s cadence for most of the 7 days. Hence we are able to use local correlation tracking (LCT) with sufficient spatial and temporal resolution to track both mesogranules and supergranules. Improved techniques for LCT are discussed and compared.
Divergence and other parameters derived from flow maps are used to identify and accurately trace supergranular boundaries and tessellate the image areas into distinct supergranules as well as smaller areas with less coherent flow patterns. We have used these to derive sizes, lifetimes, and other properties of supergranules. Motivated by recent work of Rast, Lisle, and Toomre (2004), and Lisle, Rast, and Toomre (2004), we also present results comparing the rotational rate of the supergranular and mesogranular patterns and N/S alignments of these features.
This work was supported by NASA contract NAS5-38099, the Air Force Research Laboratory, and the National Solar Observatory.

Affiliated with

Also associated with

No associations

Rating

Dynamics and Properties of Supergranulation from TRACE Observations 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 Dynamics and Properties of Supergranulation from TRACE Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics and Properties of Supergranulation from TRACE Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1172115