A comparison of upper mantle subcontinental electrical conductivity for North America, Europe, and Asia.
Journal of Geophysics - Zeitschrift fur Geophysik
By: W.H. Campbell and E.R. Schiffmacher
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Abstract
Spherical harmonic analysis coefficients of the external and internal parts of the quiet-day geomagnetic field variations (Sq), separated for the N American, European, Central Asian and E Asian regions, were used to determine conductivity profiles to depths of about 600km by the Schmucker equivalent-substitute conductor method. All 3 regions showed a roughly exponential increase of conductivity with depth. Distinct discontinuities seemed to be evident near 255-300km and near 450-600km. Regional differences in the conductivity profiles were shown by the functional fittings to the data. For depths less than about 275km, the N American conductivities seemed to be significantly higher than the other regions. For depths greater than about 300km, the E Asian conductivities were largest. -Authors
Suggested Citation
Campbell, W., and Schiffmacher, E., 1986, A comparison of upper mantle subcontinental electrical conductivity for North America, Europe, and Asia.: Journal of Geophysics - Zeitschrift fur Geophysik, v. 59, no. 1, p. 56-61.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A comparison of upper mantle subcontinental electrical conductivity for North America, Europe, and Asia. |
| Series title | Journal of Geophysics - Zeitschrift fur Geophysik |
| Volume | 59 |
| Issue | 1 |
| Year Published | 1986 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Geophysics - Zeitschrift fur Geophysik |
| First page | 56 |
| Last page | 61 |