A search for coherent structures in subsurface flows

Details A search for coherent structures in subsurface flows A search for coherent structures in subsurface flows

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jphcs.271a2065k&link_type=abstract

Journal of Physics: Conference Series, Volume 271, Issue 1, pp. 012065 (2011).

Physics

Scientific paper

We search for coherent patterns in horizontal subsurface flows obtained from Global Oscillation Network Group (GONG) Dopplergram data using ring-diagram analysis. The existence of north-south aligned downflow patterns near the equator has been predicted by numerical models of the solar convection zone. We analyze time series of daily flow measurements near the solar equator focusing on the vertical velocity component and the derivative of the zonal flow in the east-west direction. To reduce the influence of surface magnetic activity, we analyze observations during the minimum phase of the solar cycle. We find coherent equatorial structures that persist for several days in the zonal velocity derivative and the vertical velocity component and are not associated with surface magnetic activity. We use a cross-correlation analysis to measure the strength and rotation rate of these coherent patterns. Our results are consistent with other studies that have observed north-south aligned patterns in supergranulation.

Affiliated with

Also associated with

No associations

Rating

A search for coherent structures in subsurface flows 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 A search for coherent structures in subsurface flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for coherent structures in subsurface flows will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1599034