Subsurface structure of sunspots

Earth & Environmental Sciences

• sunspot 96%
• sound 57%
• speed 45%
• perturbation 22%
• vortex flow 18%
• acoustic wave 16%
• shear flow 15%
• travel time 14%
• flow pattern 13%
• plasma 10%
• inversion 9%
• measuring 9%
• method 3%

Physics & Astronomy

• sunspots 100%
• acoustics 48%
• perturbation 18%
• mass flow 16%
• travel 14%
• shear flow 14%
• emerging 12%
• flow distribution 11%
• time lag 11%
• inversions 11%
• high speed 10%
• vortices 10%
• tubes 10%