Earth's magnetic field in Brisbane

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SUMMARY

The calculated value for Earth's magnetic field in Brisbane is approximately 0.278 Gauss, derived using the formula B = (8.991E-3)*I*N/R, where I represents the current through Helmholtz coils. This value aligns closely with local field strengths provided by the National Geophysical Data Center, which can be verified through their geomagnetic models. The discussion clarifies that the calculated value pertains to the local horizontal component of the magnetic field.

PREREQUISITES
  • Understanding of Helmholtz coil configurations
  • Familiarity with magnetic field calculations
  • Knowledge of Gauss as a unit of magnetic flux density
  • Basic principles of geomagnetism
NEXT STEPS
  • Research the effects of current variations on magnetic field strength in Helmholtz coils
  • Explore the use of geomagnetic models from the National Geophysical Data Center
  • Learn about the differences between total magnetic field strength and horizontal components
  • Investigate the implications of Earth's magnetic field variations in different geographical locations
USEFUL FOR

Students in physics or geophysics, educators teaching electromagnetism, and researchers interested in geomagnetic field studies.

ausdreamer
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Homework Statement



Calculate Earth's magnetic field in Brisbane. (This was for a lab report)

Homework Equations



B = (8.991E-3)*I*N/R = 0.6034*I (I = current going through helmholtz coils)

The Attempt at a Solution



I've calculated a value of 0.278 Gauss for Earth's magnetic field. Surprisingly, however, I haven't found values anywhere to check my calculation and hoped someone could verify my value?

Sorry for posting a badly written question but this isn't really an assignment question but more to verify my lab results aren't too far off.
 
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Would 0.286 Gauss be the entire local field strength, or just the local horizontal component?

You can find local field strengths http://www.ngdc.noaa.gov/geomagmodels/IGRFWMM.jsp" .
 
Last edited by a moderator:
The horizontal field. My value lies within their given range, thank you gneill :)
 

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