Universität zu Köln

Smirnova, Maria V., Becken, Michael, Nittinger, Christian, Yogeshwar, Pritam, Moerbe, Wiebke, Rochlitz, Raphael, Steuer, Annika, Costabel, Stephan and Smirnov, Maxim Y. (2019). A novel semiairborne frequency-domain controlled-source electromagnetic system: Three-dimensional inversion of semiairborne data from the flight experiment over an ancient mining area near Schleiz, Germany. Geophysics, 84 (5). S. E281 - 12. TULSA: SOC EXPLORATION GEOPHYSICISTS. ISSN 1942-2156

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Abstract

We have developed a novel semiairborne frequency-domain electromagnetic (EM) system and successfully tested it within the DESMEX project. The semiairborne approach relies on the fact that part of the system is positioned on the ground and the rest is airborne. This allows us to take advantage of ground and airborne techniques. In particular, a high-moment transmitter can be installed on the earth's surface, which enables us to inject and induce strong EM fields in the subsurface. Moreover, galvanic coupling is possible, which is an advantage if additional ground stations are deployed. The airborne receivers allow easier, significantly faster, and more uniform spatial coverage of the study area than the ground receivers. In our implementation, transmitters and electric field receivers are installed on the ground. Magnetic field sensors, such as commercially available fluxgate, total field magnetometers, and newly developed induction coils, are installed on a helicopter-towed bird. First, we describe the results of a semiairborne survey performed in a selected area with ancient mining located in the Saxothuringian zone near Schleiz, Germany. A 3D semiairborne inversion model represents several conductive anomalies, which agree well with the outcrop of alum shale formations at the surface. In addition, the shallow parts of the semiairborne model are compared with the result of an independent helicopter-borne survey, which consists of stepwise 1D models.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Smirnova, Maria V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Becken, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Nittinger, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Yogeshwar, Pritam UNSPECIFIED UNSPECIFIED UNSPECIFIED Moerbe, Wiebke UNSPECIFIED UNSPECIFIED UNSPECIFIED Rochlitz, Raphael UNSPECIFIED UNSPECIFIED UNSPECIFIED Steuer, Annika UNSPECIFIED UNSPECIFIED UNSPECIFIED Costabel, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED Smirnov, Maxim Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-142165
DOI:	10.1190/GEO2018-0659.1
Journal or Publication Title:	Geophysics
Volume:	84
Number:	5
Page Range:	S. E281 - 12
Date:	2019
Publisher:	SOC EXPLORATION GEOPHYSICISTS
Place of Publication:	TULSA
ISSN:	1942-2156
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language 3D INVERSION; 1D INVERSION; TEM DATA; AIRBORNE; RESISTIVITY Multiple languages Geochemistry & Geophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14216