Tag Archives: near-surface shear layer

235. Correlations with Magnetic Activity in the Solar Near-Surface Shear Layer. II. Radial Shear

Contributed by M. Cristina Rabello Soares. Posted on October 1, 2026

Ring-diagram helioseismic analysis reveals that the Sun’s strongest near-surface rotational shear strengthens, shifts upward, and narrows as magnetic activity increases, suggesting a connection with evolving subsurface toroidal magnetic fields.

203. Exploring Substructure of the Near-Surface Shear Layer of the Sun

Contributed by Cristina Rabello Soares. Posted on October 4, 2024

The Sun’s near surface shear layer (NSSL) is characterized by using HMI ring-diagram results. It is found the NSSL is composed of three distinct layers: a deeper larger region with a small shear, a narrow middle layer with a strong shear, and a layer very close to the surface.