Magnetic Tutorial - Karoo - 1 Importing databases, creating grids and maps

Download two tutorial csv files at:

Important things to remember for magnetics:
- It only works if there is a physical property (susceptibility) contrast
- The main field you are measuring is the induced field, but there is also the possibility of a remanent field in a direction different to the induced field that will affect your results
- Make measurements at 90 degrees to the strike of the body
- Factors affecting the size and shape of an anomaly are: Bearing of your profile, latitude of the survey, depth of the body and also flight height, and width of the body, susceptiblity of the body, remanent magnetisation of the body
- Don't forget that your resolution is affected by the instrument you use, but also how often you take a measurement. Station spacings that are too large can result in aliasing and undersampling of the anomaly (see Nyquist frequency)

[afjade]

This lady is great. She takes all the time to well explain so any new user of the software doesn’t miss any step. Thank you very much!!!

[awarostand]

Explicit. Thank you.
Please I wish to know how to calculate the elevation channel from a geosoft xyz file.

[madhukatikireddy]

thank you for helping.. this videos is very good for new learners once again thank you so much 🙏🙏🙏

[kentmeier]

Did you account for base station data in calculation

[paheem]

Hi, how to calculate Residual? If I have column of Mag (calculated on ground) and Diurnally corrected column and TF column? Will it be Res= Mag-DC-TF or Just Res= TF-DC. Thank you

[tidytelz]

Hi, I have my gravity and magnetic grid data without the latitude and longitude coordinates (Geodatabase). I created a geodatabase from the coordinate points I extracted from google earth but I can't extract the Gravity-Magnetic values with Geosoft after successfully creating a geodatabase and importing the coordinates into in. Can you advise?

[felipeernestoyanezsandoval]

Hi! so much thanks for your video. I would like to know which geosoft version you are using

[beyondvaluestores]

Please I would like to know how the listed factors in your comment note affects the size and shape of the anomaly

[limoon]

Hi Stephanie
Could you have any methods to contact with you for Geosoft

[kentmeier]

How do you get ride of the white lines of missing data (regret I believe)

[ARUNKUMAR-cire]

My magnetic contain line effect, Survey lines are clearly visible in map. How to solve the problem

[HmoovzooChannel]

Hi sir. please upload a software free download link to me.
Thank you