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04-Geol-B10: May 2017

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

  1. Question 1 Physical Properties Sensed by Electrical and EM Methods, and Their Laboratory/Field Measurement
  2. Question 2 Geometric Arrays for Electrical Methods
  3. Question 3 Magnetotelluric Survey Instrumentation and Processing Software
  4. Question 4 Borehole Electrical and EM Surveys
  5. Question 5 Time-Domain IP vs. Time-Domain EM Waveforms
  6. Question 6 Self-Potential Survey Design and Interpretation
  7. Question 7 Spatial and Temporal Aliasing
  8. Question 8 Deriving the Wenner Apparent-Resistivity Formula
  9. Question 9 Frequency-Domain vs. Time-Domain Electromagnetic Equipment
  10. Question 10 Inversion Modelling

Start with Question 1 →

EGBC National Exam — Geological Engineering, 04-Geol-B10-2 Electrical Methods, 2017-May. Closed book; no calculator permitted. All ten questions require an answer in essay format, with diagrams used wherever appropriate. The exam instructs "choose six (6) of the following ten (10) questions, the first six as they appear in the answer book will be marked, each of equal value, about half an hour each".

Reference texts: Telford, Geldart & Sheriff, Applied Geophysics, 2nd ed. (electrical properties of rocks ch.5; self-potential ch.6; induced polarization ch.9; resistivity ch.8; electromagnetic methods ch.7; magnetotellurics ch.10); Kearey, Brooks & Hill, An Introduction to Geophysical Exploration, 3rd ed. (resistivity arrays, EM systems, MT surveying, ch.8–9); Simpson & Bahr, Practical Magnetotellurics (MT instrumentation and robust/remote-reference processing, ch.2–6).