simpeg.electromagnetics.time_domain.sources.MagDipole#

class simpeg.electromagnetics.time_domain.sources.MagDipole(receiver_list=None, location=None, moment=1.0, orientation='z', mu=1.25663706212e-06, srcType='inductive', **kwargs)[source]#

Bases: BaseTDEMSrc

Point magnetic dipole source calculated by taking the curl of a magnetic vector potential. By taking the discrete curl, we ensure that the magnetic flux density is divergence free (no magnetic monopoles!).

Parameters:
receiver_listlist of simpeg.electromagnetics.time_domain.receivers.BaseRx

A list of TDEM receivers

location(dim) numpy.ndarray, default = np.r_[0., 0., 0.]

Source location.

momentfloat

Magnetic dipole moment amplitude

orientation{“z”, “x”, “y”} or (3) numpy.ndarray

Orientation of the magnetic dipole.

mufloat

Background magnetic permeability

source_type{‘inductive’, ‘galvanic’}

Implement as an inductive or galvanic source

Attributes

integrate

Integrated source term

location

Location of the dipole

moment

Amplitude of the dipole moment of the magnetic dipole (\(A/m^2\))

mu

Magnetic permeability in H/m

nD

Number of data associated with the source.

orientation

Orientation of the dipole as a normalized vector

receiver_list

List of receivers associated with the source

srcType

Implement at inductive or galvanic source

uid

Universal unique identifier

vnD

Vector number of data.

waveform

Current waveform for the source

Methods

bInitial(simulation)

Compute initial magnetic flux density.

bInitialDeriv(simulation[, v, adjoint, f])

Returns Zero for BaseTDEMSrc

eInitial(simulation)

Returns Zero for BaseTDEMSrc

eInitialDeriv(simulation[, v, adjoint, f])

Returns Zero for BaseTDEMSrc

eval(simulation, time)

Return magnetic and electric source terms at a given time

evalDeriv(simulation, time[, v, adjoint])

Derivative of magnetic and electric source terms time a vector at a given time

get_receiver_indices(receivers)

Get indices for a subset of receivers within the source's receivers list.

hInitial(simulation)

Compute initial magnetic field.

hInitialDeriv(simulation[, v, adjoint, f])

Returns Zero for BaseTDEMSrc

jInitial(simulation)

Returns Zero for BaseTDEMSrc

jInitialDeriv(simulation[, v, adjoint, f])

Returns Zero for BaseTDEMSrc

s_e(simulation, time)

Electric source term (s_e) at a given time

s_eDeriv(simulation, time[, v, adjoint])

Returns Zero for BaseTDEMSrc

s_m(simulation, time)

Magnetic source term (s_m) at a given time

s_mDeriv(simulation, time[, v, adjoint])

Returns Zero for BaseTDEMSrc

Galleries and Tutorials using simpeg.electromagnetics.time_domain.sources.MagDipole#

EM: TDEM: Permeable Target, Inductive Source

EM: TDEM: Permeable Target, Inductive Source

EM: TDEM: 1D: Inversion

EM: TDEM: 1D: Inversion

EM: TDEM: 1D: Inversion with VTEM waveform

EM: TDEM: 1D: Inversion with VTEM waveform

Heagy et al., 2017 1D RESOLVE and SkyTEM Bookpurnong Inversions

Heagy et al., 2017 1D RESOLVE and SkyTEM Bookpurnong Inversions

Heagy et al., 2017 1D FDEM and TDEM inversions

Heagy et al., 2017 1D FDEM and TDEM inversions

1D Forward Simulation for a Single Sounding

1D Forward Simulation for a Single Sounding

1D Forward Simulation with Chargeable and/or Magnetic Viscosity

1D Forward Simulation with Chargeable and/or Magnetic Viscosity

1D Forward Simulation with User-Defined Waveforms

1D Forward Simulation with User-Defined Waveforms

3D Forward Simulation for Transient Response on a Cylindrical Mesh

3D Forward Simulation for Transient Response on a Cylindrical Mesh

3D Forward Simulation with User-Defined Waveforms

3D Forward Simulation with User-Defined Waveforms

1D Inversion of Time-Domain Data for a Single Sounding

1D Inversion of Time-Domain Data for a Single Sounding

Forward Simulation Including Inductive Response

Forward Simulation Including Inductive Response