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  Semi-airborne electromagnetic exploration for deep earth resources - large scale multi source 3D imaging of a graphite deposit

Mörbe, W., Yogeshwar, P., Tezkan, B., Kotowski, P., Thiede, A., Steuer, A., Rochlitz, R., Günther, T., Brauch, K., Becken, M. (2024): Semi-airborne electromagnetic exploration for deep earth resources - large scale multi source 3D imaging of a graphite deposit. - In: Börner, J., Yogeshwar, P. (Eds.), - Protokoll über das 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung: St. Marienthal, 25. September - 29. September 2023, 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung (St. Marienthal 2023), 32-32, 1 p.

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026107 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026107_3
Genre: Conference Paper

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https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026039 (Supplementary material)
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 Creators:
Mörbe, W.1, Author
Yogeshwar, P.1, Author
Tezkan, B.1, Author
Kotowski, P.1, Author
Thiede, A.1, Author
Steuer, A.1, Author
Rochlitz, R.1, Author
Günther, T.1, Author
Brauch, K.1, Author
Becken, M.1, Author
Affiliations:
130. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations, ou_5026038              

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 Abstract: The transition towards renewable energies demands secure supply with critical raw material and requires efficient non-invasive methods for deep earth resources exploration. The novel DESMEX (Deep electromagnetic sounding for mineral exploration) semi-airborne electromagnetic (semi-AEM) exploration concept aims at efficient exploration of resources down to 1 km depth. Here we present a large-scale semi-AEM exploration study in a graphite mining district in eastern Bavaria, Germany. At the ground, several horizontal electrical dipole transmitters were deployed and helicopter-towed magnetic field sensors measure the EM fields along flight lines within several overlapping flight areas, providing a fast data acquisition and a high spatial coverage. Imaged shallow high conductivity structures can be correlated with graphite-rich zones and match well with existing helicopter-borne EM results. The presence of graphite leads to significant induced polarization (IP) effects with considerably high chargeabilities superposing electromagnetic induction. We include these effects in a realistic 3D inversion using a synthetic data study to analyse, if the IP effect alters the overall conductivity structure and demonstrate that the obtained 3D model is reliable.

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Language(s): eng - English
 Dates: 20242024
 Publication Status: Finally published
 Pages: 1
 Publishing info: -
 Table of Contents: -
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Title: 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung
Place of Event: St. Marienthal
Start-/End Date: 2023-09-25 - 2023-09-29

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Title: Protokoll über das 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung: St. Marienthal, 25. September - 29. September 2023
Source Genre: Proceedings
 Creator(s):
Börner, Jana1, 2, Editor
Yogeshwar, Pritam2, 3, Editor
Affiliations:
1 Technische Universität- Bergakademie Freiberg , ou_persistent22            
2 30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations, ou_5026038            
3 Universität zu Köln, ou_persistent22            
Publ. Info: Potsdam : Deutsche Geophysikalische Gesellschaft e. V.
Pages: 146 Volume / Issue: 30 Sequence Number: 14 Start / End Page: 32 - 32 Identifier: ISSN: 2190-7021