NWG1 - Near Surface Geophysics


Aims

Main research focus of the NWG1 group is the mapping and interpretation of subsurface geologic structures inside and on the borders of the Thuringian basin using aeromagnetic survey data acquired with a SQUID (superconducting quantum interference device) based full tensor magnetic gradiometer instrument (FTMG) as well as ground based magnetic and electromagnetic measurements.

Befliegungsbild1-Systembild

Figure 1: Helicopter with towed FTMG instrument in a nonmagnetic body during take-off.


Working area

Five areas have been mapped with high resolution within this research project. The results should be implemented into a consistent geologic model of the Thuringian basin.

Befliegungsgebiete_NWG1

Figure 2: White patches indicate the areas within the Thurigian province of Germany which have been aeromagnetically mapped with the FTMG instrument.


Methods

A 3D inversion of the independent magnetic gradient tensor components as well as of the total magnetic field intensity is required for the detailed interpretation of the data which is current focus of the work. The interpretation of the 2D tensor maps will be jointly done with EP2 and EP9. Additional paleomagnetic and measurements of the magnetic susceptibility will help to establish the understanding of the magnetic full tensor gradient data.

Results

A ground based SQUID instrument for transient electromagnetics will be deployed for the first time in Thuringia within the project. These activities will be finished until the end of the research project.

Team

Members of the Team NWG1 you will find here.