The problem of downward continuation of potential fields is
being considered. The basic approach involves computation in real
space using a power series expansion. The computation of the derivatives
required for evaluating the series is carried out on the basis of
two approximation methods, viz. (1) polynomial method, and
(2) application of band-limited functions.
The band-limited approach is also applied to the problem of
transforming the direction of the source magnetization, that is, to the
problem of transforming a given magnetic field to the pole.
The quality of these results is considered in two ways: (1) the
frequency response of the derived convolution coefficients are compared
with the analogous system functions of the linear filter method;
and (2) the methods are applied to artificial magnetic test cases.
Good quality results are obtained using these methods. The methods
are also applied to a portion of field data. / Graduation date: 1974
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28407 |
| Date | 17 July 1973 |
| Creators | Eggers, Dwight Edward |
| Contributors | Bodvarsson, Gunnar |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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