DESMEX-MinD builds on the successful predecessor projects DESMEX, DESMEX II, and DESMEX-REAL, in which the novel exploration method semi-airborne electromagnetics (sAEM) was developed and tested in several international field sites. This technology combines ground-based current sources with highly sensitive magnetic field sensors. These sensors are towed through the air by drones or helicopters, enabling efficient and high-resolution mapping of geophysical properties of sediments and rocks in the subsurface over large areas and to depths of up to 1,000 meters. Data processing software developed at LIAG generates three-dimensional electrical conductivity models from the measured data, which can provide indications of mineralization in the subsurface. A demonstration video of an analysis is available from the predecessor project DESMEX-REAL: YouTube.
The geophysical methods research is funded by the German Federal Ministry for Research, Technology and Space (BMFTR) with €3.8 million.
New Technologies for Sustainable Mineral Exploration
A central objective of DESMEX-MinD is to overcome existing barriers to successful exploration programs. To this end, state-of-the-art measurement techniques, data processing strategies, and 3D inversion methods are being combined. Particular emphasis is placed on advancing data evaluation methodologies, AI-supported prediction approaches, and the integration of geophysics, geology, and geochemistry in order to improve compatibility with established industrial exploration workflows.
“With DESMEX-MinD, we are advancing our developments from fundamental research further toward practical application,” explains Dr. Pritam Yogeshwar, scientist at the LIAG-Institute for Applied Geophysics in Hannover. “Our goal is to improve the success rates of exploration programs through innovative geophysical methods and thereby enable sustainable, non-invasive approaches to mineral exploration.”
Planned Integration into 3D Models
The Upper Harz and the Ore Mountains are among Germany’s most important historic mining regions. Their resource-rich and geologically complex subsurface makes them ideal research areas for DESMEX-MinD. In addition to methodological developments, the project aims to establish an integrated understanding of mineral systems in both regions. For this purpose, geophysical survey data will be combined with geological and geochemical information in three-dimensional models. These models will provide an important basis for identifying potential mineral resources and planning future exploration activities.
Research for Future Raw Material Security and Knowledge Transfer
DESMEX-MinD will make an important contribution to securing raw material supply in Germany and Europe. By combining innovative technologies, interdisciplinary collaboration, and international expertise, the project seeks to open new pathways in mineral exploration and develop sustainable strategies for the exploration and future use of domestic resources. Another important objective is to transfer these complex methodologies from research into continuous industrial practice and to enable applications beyond ore exploration, such as the investigation of deep groundwater aquifers.
First Helicopter and Drone Surveys Planned for Autumn
The project’s kick-off meeting took place this spring in Münster and marked the official start of the collaboration. Extensive field campaigns and methodological developments are planned over the coming years. The first helicopter-based airborne surveys are scheduled for autumn of this year.
Background Information
Project Partners in DESMEX-MinD
University of Münster, TU Bergakademie Freiberg, LIAG Institute for Applied Geophysics (Hanover), Federal Institute for Geosciences and Natural Resources (Hanover), Leibniz Institute of Photonic Technology (Jena), State Authority for Mining, Energy and Geology (Hanover). Industrial Partners:
Beak Consultants GmbH (Freiberg), iMAR Navigation GmbH (Sankt Ingbert), supracon AG (Jena), Saxore Bergbau GmbH (Freiberg). Associated Partner: Geological Survey of Finland (Espoo) Geological Survey of Finland
Related Links
Scientific Contact
Dr. Pritam Yogeshwar
LIAG-Institut für Angewandte Geophysik (LIAG)
Stilleweg 2, 30655 Hannover, Deutschland
Telefon: +49 (0) 511 643 2269
E-Mail: pritam.yogeshwar(at)liag-institut.de