rock = own_material()
# seismic model for comparison: (see burnman/seismic.py)
seismic_model = burnman.seismic.PREM() # pick from .prem() .slow() .fast()
number_of_points = 20 # set on how many depth slices the computations should be done
depths = np.linspace(700e3, 2800e3, number_of_points)
# depths = seismic_model.internal_depth_list(mindepth=700.e3,
# maxdepth=2800.e3)
seis_p, seis_rho, seis_vp, seis_vs, seis_vphi = seismic_model.evaluate(
['pressure', 'density', 'v_p', 'v_s', 'v_phi'], depths)
temperature = burnman.geotherm.brown_shankland(depths)
# The next line is not required here, because the method is set
# automatically by defining 'equation_of_state' in mineral.params. This
# shows an alternative way to set the method later, or reset the method to
# a different one.
rock.set_method(method)
print("Calculations are done for:")
rock.debug_print()
mat_rho, mat_vs, mat_vphi = \
rock.evaluate(['density', 'v_s', 'v_phi'], seis_p, temperature)
[vs_err, vphi_err, rho_err] = \
burnman.compare_chifactor(
[mat_vs, mat_vphi, mat_rho], [seis_vs, seis_vphi, seis_rho])
print(vs_err, vphi_err, rho_err)
temperature = burnman.geotherm.brown_shankland(seis_p)
print "Calculations are done for:"
rock.debug_print()
moduli_list = burnman.calculate_moduli(rock, seis_p, temperature)
moduli = burnman.average_moduli(moduli_list, burnman.averaging_schemes.VoigtReussHill())
mat_vp, mat_vs, mat_vphi = burnman.compute_velocities(moduli)
mat_K = np.array([m.K for m in moduli])
mat_G = np.array([m.G for m in moduli])
mat_rho = np.array([m.rho for m in moduli])
[vs_err, vphi_err, rho_err] = burnman.compare_chifactor (
[mat_vs,mat_vphi,mat_rho],[seis_vs,seis_vphi,seis_rho])
# PLOTTING
# plot vs
plt.subplot(2,2,1)
plt.plot(seis_p/1.e9,mat_vs/1.e3,color='b',linestyle='-',marker='o', \
markerfacecolor='b',markersize=4,label='computation')
plt.plot(seis_p/1.e9,seis_vs/1.e3,color='k',linestyle='-',marker='o', \
markerfacecolor='k',markersize=4,label='reference')
plt.title("Vs (km/s)")
plt.xlim(min(seis_p)/1.e9,max(seis_p)/1.e9)
plt.ylim(5.1,7.6)
plt.legend(loc='lower right')
plt.text(40,7.3,"misfit= %3.3f" % vs_err)
# alternatively, we could use the values where prem is defined:
# depths = seismic_model.internal_depth_list(mindepth=700.e3,
# maxdepth=2800.e3)
seis_p, seis_rho, seis_vp, seis_vs, seis_vphi = seismic_model.evaluate(
['pressure', 'density', 'v_p', 'v_s', 'v_phi'], depths)
temperature = burnman.geotherm.brown_shankland(depths)
print("Calculations are done for:")
rock.debug_print()
mat_rho, mat_vp, mat_vphi, mat_vs, mat_K, mat_G = rock.evaluate(
['density', 'v_p', 'v_phi', 'v_s', 'K_S', 'G'], seis_p, temperature)
[vs_err, vphi_err,
rho_err] = burnman.compare_chifactor([mat_vs, mat_vphi, mat_rho],
[seis_vs, seis_vphi, seis_rho])
# PLOTTING
# plot vs
plt.subplot(2, 2, 1)
plt.plot(seis_p / 1.e9,
mat_vs / 1.e3,
color='b',
linestyle='-',
marker='o',
markerfacecolor='b',
markersize=4,
label='computation')
plt.plot(seis_p / 1.e9,
seis_vs / 1.e3,
color='k',