How to Calculate and Solve for Elevation Correction | Gravity

The image above represents elevation correction. To calculate elevation correction, two essential parameters are needed and these parameters are Free Air Correction (δg_F) and Bouguer Correction (δg_B).

The formula for calculating elevation correction:

δg_E = δg_F – δg_B

Where:

δg_E = Elevation Correction
δg_F = Free Air Correction
And, δg_B = Bouguer Correction

Let’s solve an example;
Find the elevation correction when the free air correction is 12 and the bourger correction is 17.

This implies that;

δg_F = Free Air Correction = 12
δg_B = Bouguer Correction = 17

That is, δg_E = δg_F – δg_B
δg_E = 12 – 17
δg_E = -5

Therefore, the elevation correction is -5 mGal.

Calculating the Free Air Correction when the Elevation Correction and the Bourger Correction are Given

δg_F = δg_E + δg_B

Where;

δg_F = Free Air Correction
δg_E = Elevation Correction
And, δg_B = Bouguer Correction

Let’s solve an example;
Find the free air correction when the elevation correction is 34 and the bourger correction is 21.

This implies that;

δg_E = Elevation Correction = 34
δg_B = Bouguer Correction = 21

This means, δg_F = δg_E + δg_B
δg_F = 34 + 21
δg_F = 55

Therefore, the free air correction is 55.

Read more:How to Calculate and Solve for Free Air Anomaly | Gravity

Calculating the Bourger Correction when the Elevation Correction and the Free Air Correction is Given

δg_B = δg_F – δg_E

Where;

δg_B = Bouguer Correction
δg_E = Elevation Correction
And, δg_F = Free Air Correction

Let’s solve an example;
Find the bourger correction when the elevation correction is 21 and the free air correction is 44.

This implies that;

δg_E = Elevation Correction = 21
δg_F = Free Air Correction = 44

Then, δg_B = δg_F – δg_E
δg_B = 44 – 21
δg_B = 23

Therefore, the bourger correction is 23.

How to Calculate Elevation Correction | Gravity in Nickzom Calculator

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the elevation correction.

To get the answer and workings of the elevation correction using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.

You can get this app via any of these means:

Web – https://www.nickzom.org/calculator-plus

To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator

Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Geology under Add-on.

Now, Click on Gravity under Geology

So, Click on Elevation Correction under Gravity

The screenshot below displays the page or activity to enter your values, to get the answer for the elevation correction according to the respective parameters which are the Free Air Correction (δg_F) and Bouguer Correction (δg_B).

Now, enter the values appropriately and accordingly for the parameters as required by the Free Air Correction (δg_F) is 12 and Bouguer Correction (δg_B) is 17.

Finally, Click on Calculate

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the elevation correction and presents the formula, workings and steps too.