mirror of
https://github.com/wassname/simpeg.git
synced 2026-06-27 21:08:35 +08:00
Rowan Cockett
66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
from SimPEG import Mesh, np, PF
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def run(plotIt=True):
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"""
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PF: Magnetics: Analytics
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========================
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Comparing the magnetics field in Vancouver to Seoul
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"""
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xr = np.linspace(-300, 300, 41)
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yr = np.linspace(-300, 300, 41)
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X, Y = np.meshgrid(xr, yr)
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Z = np.ones((np.size(xr), np.size(yr)))*150
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# Bz component in Korea
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inckr = -8. + 3./60
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deckr = 54. + 9./60
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btotkr = 50898.6
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Bokr = PF.MagAnalytics.IDTtoxyz(inckr, deckr, btotkr)
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bx, by, bz = PF.MagAnalytics.MagSphereAnaFunA(
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X, Y, Z, 100., 0., 0., 0., 0.01, Bokr, 'secondary'
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)
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Bzkr = np.reshape(bz, (np.size(xr), np.size(yr)), order='F')
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# Bz component in Canada
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incca = 16. + 49./60
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decca = 70. + 19./60
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btotca = 54692.1
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Boca = PF.MagAnalytics.IDTtoxyz(incca, decca, btotca)
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bx, by, bz = PF.MagAnalytics.MagSphereAnaFunA(
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X, Y, Z, 100., 0., 0., 0., 0.01, Boca, 'secondary'
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)
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Bzca = np.reshape(bz, (np.size(xr), np.size(yr)), order='F')
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if plotIt:
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import matplotlib.pyplot as plt
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from mpl_toolkits.axes_grid1 import make_axes_locatable
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fig = plt.figure(figsize=(14, 5))
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ax1 = plt.subplot(121)
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dat1 = plt.imshow(Bzkr, extent=[min(xr), max(xr), min(yr), max(yr)])
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divider = make_axes_locatable(ax1)
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cax1 = divider.append_axes("right", size="5%", pad=0.05)
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ax1.set_xlabel('East-West (m)')
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ax1.set_ylabel('South-North (m)')
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plt.colorbar(dat1, cax=cax1)
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ax1.set_title('$B_z$ field at Seoul, South Korea')
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ax2 = plt.subplot(122)
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dat2 = plt.imshow(Bzca, extent=[min(xr), max(xr), min(yr), max(yr)])
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divider = make_axes_locatable(ax2)
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cax2 = divider.append_axes("right", size="5%", pad=0.05)
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ax2.set_xlabel('East-West (m)')
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ax2.set_ylabel('South-North (m)')
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plt.colorbar(dat2, cax=cax2)
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ax2.set_title('$B_z$ field at Vancouver, Canada')
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plt.show()
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if __name__ == '__main__':
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run()
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