TY  - JOUR
A1  - Tronicke, Jens
A1  - Trauth, Martin H.
T1  - Classroom-sized geophysical experiments
BT  - magnetic surveying using modern smartphone devices
JF  - European Journal of Physics
N2  - Modern mobile devices (i.e. smartphones and tablet computers) are widespread, everyday tools, which are equipped with a variety of sensors including three-axis magnetometers. Here, we investigate the feasibility and the potential of using such mobile devices to mimic geophysical experiments in the classroom in a table-top setup. We focus on magnetic surveying and present a basic setup of a table-top experiment for collecting three-component magnetic data across well-defined source bodies and structures. Our results demonstrate that the quality of the recorded data is sufficient to address a number of important basic concepts in the magnetic method. The shown examples cover the analysis of magnetic data recorded across different kinds of dipole sources, thus illustrating the complexity of magnetic anomalies. In addition, we analyze the horizontal resolution capabilities using a pair of dipole sources placed at different horizontal distances to each other. Furthermore, we demonstrate that magnetic data recorded with a mobile device can even be used to introduce filtering, transformation, and inversion approaches as they are typically used when processing magnetic data sets recorded for real-world field applications. Thus, we conclude that such table-top experiments represent an easy-to-implement experimental procedure (as student exercise or classroom demonstration) and can provide first hands-on experience in the basic principles of magnetic surveying including the fundamentals of data acquisition, analysis and processing, as well as data evaluation and interpretation.
KW  - geophysics
KW  - magnetic surveying
KW  - table-top experiment
Y1  - 2018
U6  - https://doi.org/10.1088/1361-6404/aaad5b
SN  - 0143-0807
SN  - 1361-6404
VL  - 39
IS  - 3
PB  - IOP Publ. Ltd.
CY  - Bristol
ER  -