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Manuscript Title: Numerical evaluation of geomagnetic dynamo integrals (Elsasser and
Adams-Gaunt integrals). | ||

Authors: W. Moon | ||

Program title: ELSGAU | ||

Catalogue identifier: ACYX_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 16(1979)267 | ||

Programming language: Fortran. | ||

Computer: IBM 370/158. | ||

Operating system: OS. | ||

RAM: 25K words | ||

Word size: 8 | ||

Keywords: Geophysics, Elsasser integral, Adams-gaunt integral, Geomagnetic dynamo Integrals. | ||

Classification: 13. | ||

Revision history: | ||

Type | Tit
le | Reference |

adaptation | 0001 ADDITION OF FUNCTION DJSQ | See below |

Nature of problem:Numerical evaluation of Elsasser integrals and Adams-Gaunt integrals to apply to the normal mode studies of realistic earth models. | ||

Solution method:Elasser and Adams-Gaunt integrals are expanded using 3-J vector coupling coefficients and numerically computed checking appropriate selection rules. | ||

Restrictions:As long as the order and degree of the integrands are integers there is no restriction. | ||

Running time:0.36 s for the test run. | ||

ADAPTATION SUMMARY | ||

Manuscript Title: J-square. | ||

Authors: W. Moon | ||

Program title: 0001 ADDITION OF FUNCTION DJSQ | ||

Catalogue identifier: ACYX_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 22(1981)97 | ||

Programming language: Fortran. | ||

Classification: 13. | ||

Nature of problem:The J - square is a measure of the physical coupling of the normal modes of a vibrating system. The J - square appears in the computation of long-period eigenfunctions of realistic Earth models. In the previous study, the conventional spherical harmonics are used for normal-mode coupling and one had to evaluate Elsasser and Adams-Gaunt integrals. However it is found that, in certain cases, the generalized spherical harmonics are much more convenient. The coupling coefficient in this new approach is represented as J - square and a numerical scheme to compute J - square is included in this adaptation. | ||

Solution method:The J-square can be computed using 3-J vector coupling coefficient and appropriate selection rules. | ||

Restrictions:If each element of J-square is clearly defined there is no restriction. | ||

Running time:0.07 s for test run. |

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