Copyright © National Academy of Sciences. All rights reserved.
Solar and Space Physics: A Science for a Technological Society
REPORT OF THE PANEL ON SOLAR AND HELIOSPHERIC PHYSICS
269
FIGURE 10.4 Upper panel shows the surface magnetic field (grey) with a travel-time perturbation map constructed at a
depth of 42-75 million meters (blue) about a day before an active region appeared at the surface as seen in the lower panel.
SOURCE: Adapted from S. Ilonidis, J. Zhao, and A. Kosovichev, Detection of emerging sunspot regions in the solar interior,
Science 333:993-996, 2011. Reprinted with permission from AAAS.
Figure 10-4
Solar and Space Physics: A Science for a Technological Society
REPORT OF THE PANEL ON SOLAR AND HELIOSPHERIC PHYSICS
269
FIGURE 10.4 Upper panel shows the surface magnetic field (grey) with a travel-time perturbation map constructed at a
depth of 42-75 million meters (blue) about a day before an active region appeared at the surface as seen in the lower panel.
SOURCE: Adapted from S. Ilonidis, J. Zhao, and A. Kosovichev, Detection of emerging sunspot regions in the solar interior,
Science 333:993-996, 2011. Reprinted with permission from AAAS.
Figure 10-4