Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth
Dissertation (MSc (Exploration Geophysics))--University of Pretoria, 2007.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Published: |
University of Pretoria
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613725218832384 |
|---|---|
| access_status_str | Open Access |
| author2 | Combrink, Magdalena |
| author_browse | Combrink, Magdalena |
| author_facet | Combrink, Magdalena |
| collection | Thesis |
| dc_rights_str_mv | © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Exploration Geophysics))--University of Pretoria, 2007. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/30552 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:40:42.021Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/30552 Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth Combrink, Magdalena Stettler, E. (Edgar Heinz) jaco.smit@mh57.tns.co.ta Smit, Jacobus Petrus Theoretical Frequency Electromagnetic Domain airborne Data Earth Inversion Implementation algorithms Development UCTD Dissertation (MSc (Exploration Geophysics))--University of Pretoria, 2007. Equations for determining the electromagnetic response for a dipole situated above a layered earth are derived from Maxwell's equations. The theory is then expanded to allow for a transmitter and receiver at any distance above the surface of the layered earth. Using the commercially available software "Mathcad" standard curves are calculated for two- and three layer models. Damped least squares inversion is advocated. The partial derivatives of the layered earth expression with respect to all model parameters are formulated and the Jacobian matrix is constructed. The inversion routine is tested on noise-free synthetic data and on synthetic data with noise. The study is concluded with a case history where the developed technology is applied to a DIGHEM V data set flown over the Nebo granites in the Ga-Masemola area, Limpopo Province, South Africa. Results show that although the data consists of only three co-planar frequencies, parameters such as depth to bedrock, overburden conductivity and bedrock conductivity can be recovered. Geology unrestricted 2013-09-07T19:20:04Z 2007-02-22 2013-09-07T19:20:04Z 2006-04-24 2007-02-22 2007-02-22 Dissertation Smit, J 2006, Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/30552 > http://hdl.handle.net/2263/30552 http://upetd.up.ac.za/thesis/available/etd-02222007-142602/ © 2006, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Theoretical Frequency Electromagnetic Domain airborne Data Earth Inversion Implementation algorithms Development UCTD Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title | Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title_full | Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title_fullStr | Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title_full_unstemmed | Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title_short | Theoretical development and implementation of algorithms for the inversion of airborne FDEM data to a layered earth |
| title_sort | theoretical development and implementation of algorithms for the inversion of airborne fdem data to a layered earth |
| topic | Theoretical Frequency Electromagnetic Domain airborne Data Earth Inversion Implementation algorithms Development UCTD |
| url | http://hdl.handle.net/2263/30552 http://upetd.up.ac.za/thesis/available/etd-02222007-142602/ |