Link to USGS home page.
Scientific Investigations Report 2005–5045: Equation 1
These gradients can be arranged into a matrix called a magnetic gradient tensor, mathematically expressed as:

G =

[
∂ bx ⁄ ∂ x ∂ by ⁄ ∂ x ∂ bz ⁄ ∂ x
∂ bx ⁄ ∂ y ∂ by ⁄ ∂ y ∂ bz ⁄ ∂ y
∂ bx ⁄ ∂ z ∂ by ⁄ ∂ z ∂ bz ⁄ ∂ z

]
AccessibilityFOIAPrivacyPolicies and Notices

U.S. Department of the Interior | U.S. Geological Survey
URL: <http://pubs.usgs.gov/sir/2005/5045/eq01.html>
Questions or Assistance: Contact USGS
Page Last Modified: Tue Apr 26 17:16 EDT 2005

USA.gov logo  Take Pride in America button