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Time-Distance Helioseismology of the Deep Interior T.L. Duvall Jr. (NASA/GSFC)
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Points to cover: Magnetic field measurements near convection zone bottom Deep flow measurements: surprise! : noise correlated from day to day Measuring travel times from convection simulations: how large a signal should there be?
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Magnetic fields near the base of the convection zone
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Rays for deep flow detection
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Correlations of maps from one day to the next:
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Looking at whether near-surface flows can cause day to day correlations Near-surface flows as shown by the f-mode divergence signal. Overlaid in green is the annulus used for detection of deep flows.
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Travel times computed by taking a snapshot of a convection simulation and integrating over ray paths through the simulation to obtain the times.
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