• IAGA Division VI - 25th EM Induction Workshop
  • 25th.emiw@gmail.com
 
 
  • Home
  • Abstracts
    • Licence and copyright
  • Programme
    • Sessions Overview
    • Review Talks
    • Excursions
  • Venue
  • Contact
  • Home
  • Abstracts
    • Licence and copyright
  • Programme
    • Sessions Overview
    • Review Talks
    • Excursions
  • Venue
  • Contact

  • Abstracts
  • Abstract Details

Details of the abstract

Title of paper Drone based experimental TEM surveys over Lake Baikal and a uranium occurrence
List of authors Author Hallbauer-Zadorozhnaya, Co-author Davydenko Yu.A., Co-author , Parshin A.V., Co-author Stettler E.H.
Affiliation(s) AeroPhysX (pty) Ltd, South Africa
Irkutsk National Research Technical University, Russia
Gelos Ltd, Russia
University of Witwatersrand, South Africa,
Summary The results of experimental TEM surveys using drones, carried out at the Bolshoe Goloustnoye site on Lake Baikal and at a uranium deposit are presented. L Baikal is a unique geoelectrical situation, where low-resistivity lacustrine sediments are located under a relatively isotropic water body. The upper part of the sedimentary sequence is represented by diatomaceous silt with high conductivity, the lower part has denser clayey sediments. The task was to investigate the possibility of using a drone based TEM survey for delineating the electrical stratigraphy of the subsurface at depths between 50-200 m separated into layers and blocks.
The geology of the uranium bearing area consists of a high-resistivity crystalline basement, overlain by low-resistivity sedimentary deposits (sands, clays) and effusive rocks and the TEM survey was undertaken to determine if the U mineralized strata have a distinctive resistivity signature.
The combined instrumentation unit consisted of an EGI-500 generator providing bipolar current pulses, a Mars 4.0 which is a multi-channel electrical prospecting potential difference recorder, a PDI-50 receiver loop and a SibGIS UAS - unmanned 6-rotor aircraft with a payload of up to 10 kg.
In both cases, a grounded electrical line AB was used as a source of the electromagnet field. Sixteen traverses of survey data were measured over the Baykal ice sheet and five traverses over the uranium deposit.
For the interpretation of the TEM data the St technique was used, which allows tracing the change in the apparent longitudinal conductivity with depth. On the sections, a high-resistivity layer is clearly distinguished, corresponding to the water of Lake Baikal as well as sedimentary deposits, composed by several blocks of low resistivity. The U-bearing layers are confidently identified in all profiles at depths of 120-170 m.
Session Keyword 3.0 Exploration, Monitoring and Hazards
File upload 3.0_drone_based_experimental_hallbauer-zadorohnaya.pdf
Back

IAGA Division VI website is hosted by
Logo of GFZ German Research Centre for Geosciences

Footer Logo

A main activity of IAGA Division VI is the biennial Electromagnetic Induction in the Earth Workshops, initiated in 1972.

  • Email: 25th.emiw@gmail.com
  • Impressum

© 2023 IAGA Division VI - Electromagnetic Induction in the Earth and Planetary Bodies

  • Home
  • Abstracts
  • Programme
  • Venue
  • Contact