M. NDIAYE, A. DIAGNE
to know the underground object responsible for the ano-
ma ly.
4. Conclusions
The geomagnetic investigation carried out using Iphone
4S magnetic sensor with Sensor Monitor application,
shows that the geometry and the depth of the basaltic
vein can be retrieved from the magnetic anomaly data.
The reliability of the result has been confirmed with ex-
isting geological maps.
It should be important in a next stage to interpret the
geomagnetic anomaly using inversion techniques in 2D
in order to retrieve a model of the magnetic body.
The method seems to be accurate in geometry and
depth deter mination but it will b e worth in the next steps
developing a standalone mobile application that should
process the acquired data, map the magnetic anomaly and
later give the depth and shape of the magnetic body.
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