45° (in your figure) can be accepted if you do not mix acquisition protocoles or use complex acquisition protocoles (multi gradient). You have tables/formulas in the res2Dinv manual proposed by Loke to obtain this value. take the depth of "medium" sensitivity (more complex). take the center of the quadrupole for the x location (easy)
To locate artificially apparent resistivities we usually : You have here only informations concerning your quadripole (location of electrodes) and apparent resistivities. The information in your file must be read as follow (this is the information of the electrodes not location of the data points):Ĥ (not important) 0.0 (x_Elec1=0) 0.0 (z_Elec1=0) 3.0 (x_Elec4=3m) 0.0 (z_Elec4=0). Please note that you can export the result with res2dinv (.inv) to be plotted with Surfer. a DAT file only integrate the acquisition information so you can plot a pseudo section of apparent resistivities.Įlectrical Resistivity Tomography (ERT) is the result of the inversion process (Res2dinv in your case). Thank you in advance!įirst, you can not represent an ERT with surfer with a DAT file. dat file, I get clear, that's how the professor is asking for it. But that's the only thing I can think of, just with the data in my. Obviusly you'll have something different compared to the result of a Inversion, for example, in Res2dinv.
You can have the y position (depth) only having the distance R, which we can calculate with the distance betwwen electrodes on my. Then having the distances between electrodes I can calculate the y position of each data point, it is only matter of clearing the Pythagorean theorem and substituting the hypotenuse in terms of the law of sines (since we do not know the hypothenuse value). My idea is, the triangle can be divided into two right triangles, whose opposite side would be the y position of each data point. I have an idea, in the second image, there's a diagram of how is located in depth every data point. If you don't mind I'd like to read your experiences or ideas with this.
So then, I need somehow to calculate the y location (depth) of every data point. dat file the difference is in the nineth row "Type of x-location", in my case I have the number 2, which according to the manual "A value of 1 is used if the x-location values are the true horizontal distances, while a value of 2 is used if it is the distance along the ground surface". As you see in the image bellow, is the format of my. Hi there! I'm trying to do a ETR on Surfer with the info on my.
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