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seogi_macbook
2016-02-10 23:58:48 -08:00
parent 429d8b1191
commit 47895ef270
4 changed files with 48 additions and 32 deletions
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docs/examples/EM_FDEM_1D_Inversion.rst
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.. _examples_EM_FDEM_1D_Inversion:
.. --------------------------------- ..
.. ..
.. THIS FILE IS AUTO GENEREATED ..
.. ..
.. SimPEG/Examples/__init__.py ..
.. ..
.. --------------------------------- ..
EM: FDEM: 1D: Inversion
=======================
Here we will create and run a FDEM 1D inversion.
.. plot::
from SimPEG import Examples
Examples.EM_FDEM_1D_Inversion.run()
.. literalinclude:: ../../SimPEG/Examples/EM_FDEM_1D_Inversion.py
:language: python
:linenos:
docs/examples/EM_FDEM_SusEffects.rst
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.. _examples_EM_FDEM_SusEffects:
.. --------------------------------- ..
.. ..
.. THIS FILE IS AUTO GENEREATED ..
.. ..
.. SimPEG/Examples/__init__.py ..
.. ..
.. --------------------------------- ..
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.
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:
- F[:math:`\sigma`, :math:`\mu`]: Anomalous conductivity and susceptibility
- F[:math:`\sigma`, :math:`\mu_0`]: Anomalous conductivity
- F[:math:`\sigma_{air}`, :math:`\mu_0`]: primary field
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.
.. plot::
from SimPEG import Examples
Examples.EM_FDEM_SusEffects.run()
.. literalinclude:: ../../SimPEG/Examples/EM_FDEM_SusEffects.py
:language: python
:linenos: