Ground Unite Vs Estimate depth
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JiangyuLi
Posts: 2
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Hi Guys,
I have a question while applying Montaj to do some upward continuation and would like to ask you about it.
Do you know how to transfer the ground unite to estimate depth.
![](https://us.v-cdn.net/5021569/uploads/editor/37/myjzq1juggae.png)
In the upward continuation, I chose the ground unite around 0.1, but what is 0.1 ground unite means interms of continuation depth, how could I konw the depth that I continuated??
This have puzzle me for a while, any help will be greatly appreciated!
Cheers,
Jiang
I have a question while applying Montaj to do some upward continuation and would like to ask you about it.
Do you know how to transfer the ground unite to estimate depth.
![](https://us.v-cdn.net/5021569/uploads/editor/37/myjzq1juggae.png)
In the upward continuation, I chose the ground unite around 0.1, but what is 0.1 ground unite means interms of continuation depth, how could I konw the depth that I continuated??
This have puzzle me for a while, any help will be greatly appreciated!
Cheers,
Jiang
0
Comments
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it should be units of the dataset- I'm guessing you're using geodetic (Degrees) rather than UTM or equivalent (in metres)- so you may want to reproject3
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Hello @JiangyuLi as Andrew says, because your grid is a statewide (Queensland) it's likely that the ground units of that grid are degrees, so you have a couple of options:
1. Keep the current coordinate system for the grid and use a degrees to metres converter to calculate the appropriate continuation distance to enter (in degrees).
2. Reproject the grid to a projected coordinate system (in your case GDA94, MGA zone 55 might be best), in which the ground units are metres; then the continuation distance will be in metres. Instructions on how to reproject a grid in Oasis montaj are provided in this article: https://my.geosoft.com/supportcentre#/kb/kA330000000VYr6CAG
Best,
Darren Andrews
Technical Team Manager2 -
Hi Andrew and Darren, thanks so much for your reply, now I got it!
Cheers,
Jiang
0
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