A comparison of numerical,analogue model,and field-station vertical magnetic-fields for the Vancouver Island region |
| |
| Authors: | V Ramaswamy FW Jones HW Dosso W Nienaber |
| |
| Institution: | 1. Institute of Petroleum Exploration, Dehra Dun India;2. Department of Physics, University of Alberta, Edmonton, Alberta Canada;3. Department of Physics, University of Victoria, Victoria, B.C. Canada |
| |
| Abstract: | Vertical magnetic fields for a three-dimensional numerical model, for a laboratory-analogue model, and from field stations for the Vancouver Island region of British Columbia, Canada, are compared. The numerical results are obtained using a three-dimensional finite-difference numerical technique employing a 25 × 25 × 25 mesh of grid points for a simplified mathematical model of the Vancouver Island region. The calculations are carried out for a source frequency of 0.004 Hz. The analogue model results for four traverses over the Island model and the field station values (obtained from transfer function analysis) for ten locations are those discussed previously by Nienaber et al. (1979a, b). General agreement exists between the numerical, analogue, and field station data, and comparison of results between these methods is important in three-dimensional electromagnetic induction studies of complex geomagnetic induction problems. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
