PHYS/GEOL 406 Homework
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   Homework #8: Due Monday, March 30, by 12noon.

Reading:

  • section 5.3.3: Note the completely general equation (5.15). We will use this for all sorts of electrode configurations.
  • section 5.4.3-5.4.5
  • Note the software-generated example curves in section 5.4.6. We will use the software that came with the book to generate our own.
Assignment:
  1. problem 5.12 Use a spreadsheet to do this. Make 2 graphs: ρ vs. z and Σρ vs. z. You can count the number of layers with the ρ vs. z, and see which points are associated with the layers. You will use the cumulative resistivity graph to get the depth to the boundaries between the layers. Turn in your graphs and your data table (save paper--print them all on one page). Show your work (lines) on your (cumulative resistivity) graph. Your data table should have 4 columns as we had in class: electrode spacing, resistivity, effective depth z, and cumulative resistivity. Center your columns, and have appropriate significant figures for z and Σρ (you'll have to use theirs for a and ρ).
  2. problem 5.14 Use a spreadsheet to do this. Make 2 graphs: ρ vs. z and Σρ vs. z. You can count the number of layers with the ρ vs. z, and see which points are associated with the layers. You will use the cumulative resistivity graph to get the depth to the boundaries between the layers. Turn in your graphs and your data table (save paper--print them all on one page). Show your work (lines) on your (cumulative resistivity) graph. Your data table should have 4 columns as we had in class: electrode spacing, resistivity, effective depth z, and cumulative resistivity. Center your columns, and have appropriate significant figures for z and Σρ (you'll have to use theirs for a and ρ).

That's all for homework #8.