# Diff of /trunk/doc/inversion/CookMagnetic.tex

revision 4155 by azadeh, Tue Jan 22 00:23:39 2013 UTC revision 4156 by azadeh, Wed Jan 23 03:45:14 2013 UTC
# Line 19  negative numbers for Bouguer anomaly. Line 19  negative numbers for Bouguer anomaly.
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20  \textbf{Magnetic Data} \\  \textbf{Magnetic Data} \\
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22  Although Magnetic and gravity methods are almost the same, Magnetic has its own complexity, elaboration and instability and localized. Outer core of the Earth has a convection current which produce a magnetic field through the earth so magnetic fields are not central, their directions vary with azimuth. Its north pole is in the south of the Earth and south pole in north of the earth. Meantime magnetic pole and its axis are not exactly coinciding with geographical one. Also poles are shifted continuously. the line of magnetic field come out from south magnetic pole and go into north magnetic field. \\  Although Magnetic and gravity methods are almost the same, Magnetic has its own complexity, elaboration and instability and it is very localized. Outer core of the Earth has a convection current which produce a magnetic field through the earth so magnetic fields are not central, their directions vary with azimuth. Its north pole is in the south of the Earth and south pole in north of the earth. Meantime magnetic pole and its axis are not exactly coinciding with geographical one. Also poles are shifted continuously. the line of magnetic field come out from south magnetic pole and go into north magnetic field. \\
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24  The basic magnetic field or magnetic flux density in any medium is $B$. Meanwhile $H$ is a parameter proportional to $B$ in non magnetizable material. In magnetizable material $H$ is describe how $B$ is changed with polarization or magnetization.\\  The basic magnetic field or magnetic flux density in any medium is $B$. Meanwhile $H$ is a parameter proportional to $B$ in non magnetizable material. In magnetizable material $H$ is describe how $B$ is changed with polarization or magnetization.\\
25  All material magnetic behavior, refer on the magnetic moments of atoms or its ions, have a character, to be magnetized in an external magnetic field, which introduce as susceptibility. based on their magnetic susceptibility, material are compartmented in three main class: diamagnetism, paramagnetism and ferromagnetism.\\  All material magnetic behavior, refer on the magnetic moments of atoms or its ions, have a character, to be magnetized in an external magnetic field, which introduce as susceptibility. based on their magnetic susceptibility, material are compartmented in three main class: diamagnetism, paramagnetism and ferromagnetism.\\
26  Increasing in magnetic field anomalies over subsurface geological structure illustrate contrast between magnetization in neighboring rock properties.\\  Increasing in magnetic field anomalies over subsurface geological structure illustrate contrast between magnetization in neighboring rock properties.\\
# Line 38  This module of magnetic inversion needs Line 39  This module of magnetic inversion needs
39  The next file which includes some factors to figure the inversion escripts.  The next file which includes some factors to figure the inversion escripts.
40  Again in magnetic inversion, a padding area present around the real data to smooth the effects of cutting data in boundaries.  Again in magnetic inversion, a padding area present around the real data to smooth the effects of cutting data in boundaries.
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42  A small part of sample of run_mag2D  A small part of sample of run_mag2D:\\
43  \begin{verbatim}  \begin{verbatim}
44  depth_offset=0.*U.km  depth_offset=0.*U.km
45  mu=1.  mu=1.

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