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seogi_macbook
2016-02-11 00:10:25 -08:00
parent 47895ef270
commit fa6bcd3ffa
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docs/examples/EM_FDEM_SusEffects.rst
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@@ -9,14 +9,14 @@
.. --------------------------------- ..
FDEM: Effects of susceptibility
EM: FDEM: Effects of susceptibility
===============================
When airborne freqeuncy domain EM (AFEM) survey is flown over
the earth including significantly susceptible bodies (magnetite-rich rocks),
negative data is often observed in the real part of the lowest frequency
(e.g. Dighem system 900 Hz). This phenomenon mostly based upon magnetization
occurs due to a susceptible body when the magnetic field applied.
occurs due to a susceptible body when the magnetic field is applied.
To clarify what is happening in the earth when we are exciting the earth with
a loop source in the frequency domain we run three forward modelling:
@@ -27,7 +27,7 @@ a loop source in the frequency domain we run three forward modelling:
We plot vector magnetic fields in the earth. For secondary fields we provide
F[:math:`\sigma`, :math:`\mu`]-F[:math:`\sigma`, :math:`\mu_0`]. Following
figure show only real part, since that is our interest.
figure show both real and parts.