Study and Discussion Questions

• Write the equation for the gravitational acceleration g
• What is the approximate value of g at sea level?
• List the sources of gravitational acceleration that affect a gravity meter.
• For each of the sources listed above;
  • Indicate what corrections (if any) must be made to the raw gravity data.
  • Describe how the correction is done.
  • Estimate the order of magnitude of the correction near Golden.
• Describe any sources of error in gravity data.
• Estimate the magnitude of these other errors and describe how they can be reduced.
• Sketch the shape of the gravity anomaly associated with a;
  • tunnel or cave.
  • vertical fault.
  • vertical dyke.
• Describe how the gravity anomalies over these structures changes as the geologic parameters describing them (depth, diameter, offset, etc.) change.