Identification of Very Long-Lived Inertial Waves in the Solar Atmosphere
Abstract
The wavelike pattern of velocity variations in the outer layers of the sun known as the Torsional Oscillations is shown to consist of long-lived inertial oscillation waves. The dominant pattern which was first identified and which has now been observed with MDI and GONG may be the m=0 component of a heirarchy of inertial oscillation waves having m values up to 8. The identification is based on the geometric structure and the relationship of the pattern in adjacent bands of latitude. It is found that the cross correlation between adjacent latitude bands consists almost exclusively of an oscillatory component with little or no evidence of a peak at zero lag. Since the pattern has a global extent in the longitudinal direction with the wave pattern being coherent over essentially the whole solar circumference, a convective interpretation cannot be supported when the latitudinal structure is limited to less than 3 degrees of latitude.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2001
- Bibcode:
- 2001AGUSM..SP31A01U
- Keywords:
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- 7536 Solar activity cycle (2162);
- 7544 Stellar interiors and dynamo theory