# 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 (Î´gF)Â andÂ Bouguer Correction (Î´gB).

The formula for calculating elevation correction:

Î´gEÂ = Î´gFÂ – Î´gB

Where:

Î´gEÂ = Elevation Correction
Î´gFÂ = Free Air Correction
And, Î´gB = 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;

Î´gF = Free Air Correction = 12
Î´gB = Bouguer Correction = 17

That is, Î´gEÂ = Î´gFÂ – Î´gB
Î´gE = 12 – 17
Î´gEÂ = -5

Therefore, theÂ elevation correctionÂ isÂ -5 mGal.

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

Î´gF = Î´gE + Î´gB

Where;

Î´gFÂ = Free Air Correction
Î´gEÂ = Elevation Correction
And, Î´gBÂ = Bouguer Correction

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

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This implies that;

Î´gE = Elevation Correction = 34
Î´gB = Bouguer Correction = 21

This means, Î´gF = Î´gE + Î´gB
Î´gF = 34 + 21
Î´gF = 55

Therefore, theÂ free air correctionÂ isÂ 55.

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

Î´gBÂ = Î´gF – Î´gE

Where;

Î´gBÂ = Bouguer Correction
Î´gEÂ = Elevation Correction
And, Î´gF = 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;

Î´gE = Elevation Correction = 21
Î´gF = Free Air Correction = 44

Then, Î´gBÂ = Î´gF – Î´gE
Î´gB = 44 – 21
Î´gB = 23

Therefore, theÂ bourger correctionÂ isÂ 23.

### How to Calculate Elevation Correction | Gravity in Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the elevation correction.

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

You can get this app via any of these means:

To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 2,000Â perÂ annumÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

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

Now, Click onÂ GravityÂ under Geology

So, Click on Elevation Correction underÂ 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 (Î´gF)Â andÂ Bouguer Correction (Î´gB).

Now, enter the values appropriately and accordingly for the parameters as required by the Free Air Correction (Î´gF) is 12 andÂ Bouguer Correction (Î´gB) is 17.

Finally, Click on Calculate

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