Jiajia Sun

wavelengh equation needs to be double checked

1

The equation for the wavelength of a plane wave in the frequency domain on this webpage (https://em.geosci.xyz/content/maxwell1_fundamentals/harmonic_planewaves_homogeneous/wavelength.html#harmonic-planewaves-homogeneous-wavelength-formula) does not seem right. The wavelength is defined by 2X \pi/wavenumber, where wavenumber,...

Hi, Seogi and Lindsey, I was checking this webpage https://simpegem1d.readthedocs.io/en/latest/api_EM1D.html, and noticed that the forward modeling (for both frequency domain and time domain EM) part is unfinished. I am interested...

Peak time calculation not right in TDEM_Planewave_Wholespace app

1

Hi, I was using the app TDEM_Planewave_Wholespace.ipynb to explore the peak time. I set conductivity to 1 S/m. And adjust the time to see when the peak reaches the depth...

Is there an app for horizontal magnetic dipole in time domain (or frequency domain)? I was trying to reproduce the propagation of current in time, as shown in the following...

I am getting confused by the terminology regarding 'real' and 'imaginary' components of the electrical (or magnetic) field. For plane waves in a homogeneous halfspace, the electrical field can be...

The equations 8-11 for Ex and Hy field when it comes to plane waves on this webpage (https://em.geosci.xyz/content/maxwell1_fundamentals/harmonic_planewaves_homogeneous/derivation.html) seem to have exp(i \omega t) missing. Please double check.

On this webpage (https://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/understanding_harmonicEMresponse.html), the mutual inductance M_12 is derived using Biot-Savart law. But the equation for A_1 is not quite right, because A_1 should be inversely proportional to the...

A question about the phase of the response function fo the simple 3-loop circuit system

2

The response function can be written as \frac{\alpha^2 + i \alpha}{1+\alpha^2}. The phase lag is $\phi/2 + tan^{-1}(\alpha)$. Therefore, if \alpha is very small, say, 1e-4 (for example, in the...

The following screenshot was taken from this webpage (https://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/index.html). First of all, for the equation on the third line, a minus sign is missing in front of the 'iw'. Secondly,...

No Jx component for VMD over a halfspace?

3

I was exploring the app TDEM_HorizontalLoop_LayeredEarth. The parameters that I used are summarized in the following figure.  How come there is no Jx component, if the induced current is...