/[escript]/trunk/doc/inversion/CookMagnetic.tex
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revision 4432 by gross, Wed Mar 27 07:58:34 2013 UTC revision 4433 by gross, Fri May 31 12:09:58 2013 UTC
# Line 32  from esys.escript import unitsSI as U Line 32  from esys.escript import unitsSI as U
32  dom=DomainBuilder()  dom=DomainBuilder()
33  dom.setVerticalExtents(depth=40.*U.km, air_layer=6.*U.km, num_cells=25)  dom.setVerticalExtents(depth=40.*U.km, air_layer=6.*U.km, num_cells=25)
34  dom.setFractionalPadding(pad_x=0.2, pad_y=0.2)  dom.setFractionalPadding(pad_x=0.2, pad_y=0.2)
35  B_b = [31232.*U.Nano*U.Tesla, 2201.*U.Nano*U.Tesla, -41405.*U.Nano*U.Tesla]  B_b = [2201.*U.Nano*U.Tesla,  31232.*U.Nano*U.Tesla, -41405.*U.Nano*U.Tesla]
36  dom.setBackgroundMagneticFluxDensity(B_b)  dom.setBackgroundMagneticFluxDensity(B_b)
37  dom.fixSusceptibilityBelow(depth=40.*U.km)  dom.fixSusceptibilityBelow(depth=40.*U.km)
38    
# Line 79  are a few small differences which we are Line 79  are a few small differences which we are
79  The magnetic inversion requires data about the background magnetic flux density  The magnetic inversion requires data about the background magnetic flux density
80  over the region of interest which is added to the domain by the statements  over the region of interest which is added to the domain by the statements
81  \begin{verbatim}  \begin{verbatim}
82  B_b = [31232.*U.Nano*U.Tesla, 2201.*U.Nano*U.Tesla, -41405.*U.Nano*U.Tesla]  B_b = [2201.*U.Nano*U.Tesla, 31232.*U.Nano*U.Tesla,  -41405.*U.Nano*U.Tesla]
83  dom.setBackgroundMagneticFluxDensity(B_b)  dom.setBackgroundMagneticFluxDensity(B_b)
84  \end{verbatim}  \end{verbatim}
85  Here it is assumed that the background magnetic flux density is constant across  Here it is assumed that the background magnetic flux density is constant across
86  the domain and is given as the list  the domain and is given as the list
87  \begin{verbatim}  \begin{verbatim}
88  B_b= [ B_N,  B_E, B_V ]  B_b= [ B_E,  B_N, B_V ]
89  \end{verbatim}  \end{verbatim}
90  in units of Tesla (T) where  in units of Tesla (T) where
91  \member{B_N}, \member{B_E} and \member{B_V} refer to the north, east and  \member{B_N}, \member{B_E} and \member{B_V} refer to the north, east and

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