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18-Geol-A7 Applied Geophysics: December 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Planning a Geophysical Survey
  2. Question 2 Seismic Reflection — Physical Properties, Application and Processing
  3. Question 3 Three Well-Logging Tools
  4. Question 4 Gamma-Ray Spectrometry Surveys
  5. Question 5 Electrical vs. Electromagnetic Methods
  6. Question 6 The Fourier Transform in Geophysical Data Processing
  7. Question 7 Airborne, Ground and Borehole Electromagnetic Systems
  8. Question 8 Enhancing Features in Geophysical Data
  9. Question 9 Forward and Inverse Modelling
  10. Question 10 Geophysical Techniques for a Chosen Application — Groundwater

Start with Question 1 →

National Exams — December 2016 — 04-Geol-A7 Applied Geophysics. Three-hour, closed-book exam; no calculator permitted. The paper offers a choice of six of the following ten questions, each worth 16.66% of the total mark, and every question requires an essay-format answer — this is an all-essay paper with no numeric data, formula sheet or figure supplied. All ten questions are answered below.

Reference texts: Telford, Geldart & Sheriff, Applied Geophysics (2nd ed.) — the primary reference for every method touched in this paper (survey design, seismic reflection, well logging, gamma-ray spectrometry, electrical/EM methods, EM systems, data enhancement, forward/inverse modelling); Kearey, Brooks & Hill, An Introduction to Geophysical Exploration (3rd ed.) — survey planning, data display, case-history context; Blakely, Potential Theory in Gravity and Magnetic Applications — potential-field forward/inverse modelling theory (Q9); Selley & Sonnenberg, Elements of Petroleum Geology — well-logging context (Q3); Freeze & Cherry, Groundwater — hydrogeophysics context (Q10).