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18-Geol-A7 Applied Geophysics: May 2018

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

  1. Question 1 Magnetic Susceptibility and Remanence
  2. Question 2 Seismic Reflection Acquisition Geometry and Zero-Offset Section Generation
  3. Question 3 Gamma-Ray Spectrometry — Applications, Survey Design and Processing
  4. Question 4 Downhole Resistivity Survey Arrays
  5. Question 5 Time-Domain vs. Frequency-Domain Geophysical Measurements
  6. Question 6 Electrical vs. Electromagnetic Methods
  7. Question 7 High-Pass vs. Low-Pass Filtering of Geophysical Data
  8. Question 8 Three Geophysical Well-Logging Tools
  9. Question 9 Airborne, Ground and Borehole Electromagnetic Systems
  10. Question 10 Forward and Inverse Modelling in Quantitative Geophysical Interpretation

Start with Question 1 →

National Exams — May 2018 — 04-Geol-A7 Applied Geophysics. Three-hour, closed-book exam; approved Casio or Sharp 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 a genuinely all-essay sitting with no numeric data, formula sheet, or figure supplied in the source. All ten questions are answered below so the set stands as a complete study resource for choose-N-of-M exams.

Reference texts: Telford, Geldart & Sheriff, Applied Geophysics (2nd ed.) — the primary reference for every method touched in this paper (magnetics, seismic reflection, radiometrics, downhole resistivity, EM/IP, filtering, well logging, forward/inverse modelling); Kearey, Brooks & Hill, An Introduction to Geophysical Exploration (3rd ed.) — survey planning, array geometry, data display; Blakely, Potential Theory in Gravity and Magnetic Applications — potential-field filtering and forward/inverse modelling (Q7, Q10); Selley & Sonnenberg, Elements of Petroleum Geology — well-logging tool context (Q8).