Geophysics 325 : Gravity, magnetic and electrical methods

Useful links

B : Gravity exploration methods

Gravity data

• CGSN : Canadian Gravity Standardization Network

  This page requires that you register and you can then view:

• Interactive map of Canada showing CGSN stations
• Interactive map of Alberta showing CGSN stations
• Details of the CGSN station at the Edmonton International Airport

  Measuring gravity

• Satellite gravity : GRACE experiment
• Absolute gravity measurements
• LaCoste & Romberg Gravimeters

  Other gravity links

• Notes on the Geoid from the Open University (UK)
• Geoid of Venus (needs Java to be enabled to run)
• UNAVCO Interactive Geoid calculator
• Gravity inversion
• Geophysical test to see if non-Newtonian gravitation exists Ander et al, Phys. Review Letters, 1989 (PDF)

C : Electrical resistivity methods

• Electrical resistivity in geothermal fields : Ussher et al, (2000) PDF
• Inversion of DC resistivity data : UBC Geophysical Inversion Facility

D : Magnetic exploration methods

• Early history of the magnetic pole
• History of magnetism
• Interactive movies of the Earth's magnetic field

• NOAA Space Weather Forecast
• North Magnetic Pole could be leaving Canada (CNN 2002)
• University of Alaska, Aurora Forecast

• Examples of mineral exploration with magnetic data : Fugro Airborne Aurveys
• Kimberlite exploration with magnetics : SHA Limited webpage
• Canadian Aeromagnetic coverage : Natural Resources Canada

Page last updated November 21 2005