Schedule

I will be building up our schedule below as we go. Handouts will be linked below as well.

Week 1

Lab (Field) T 9/20 or R 9/22

Lab handout

• Cable management
• What is the simplest electrical resistivity measurement (4-electrode Wenner measurements with the SKS-24 electrical resistivity meter)
• What can an electrical resistivity measurement do for you? (Los Alamos sturcutral geology example on the rolling whiteboard)

Class (F 9/23)

Gaining intuition about the "earth-circuit" idea and the earth as a resistor. DC Circuit Consturction simulator. Resistance vs. resistivity. See the available reading materials on the Electrical Resistivity webpage.

Week 2

Lab (Field) T9/27 or R 9/29

Collect a 1D Wenner Vertical Electrical Sounding (VES) data set at the Chorro Creek Dog Leg Reference Profile.

• What is the Chorro Creek Dog Leg Reference Profile?
• Chorro Creek Dog Leg area topographic map
• Wenner 1D VES data collection handout.
• Morro Bay South Geologic Map. Quite zoomed out from our field site but shows local geology. May not render cleanly in a browser window - download PDF document and use a PDF reader on your local computer.
  • Excerpt for the Chorro Creek Dog Leg area

Class (F 9/30)

• Processing (with EarthImager1D) and interpreting (thinking geologically) the Chorro Creek VES data.
• A minimal summary of the field data is available on the Data Archive page.

Week 3

Lab (Field) T 10/4 or R 10/6

Collect to 2D Electrical Resistivity Tomography data set on the Chorro Creek Dog Leg Reference Profile. TUE: Dipole-dipole Strong-gradient array. THUR: Schlumberger Inverse array.

• Lab Handout

Class (F 10/7)

• EarthImager and 2D Data Processing/Analysis
  • A minimal summary of the field data is now available on the Data Archive page.
• Array styles
• Geometric factor

Week 4

Lab (T 10/11 or R 10/13)

In-class lab meeting:

• Resolution: forward and inverse modeling with EarthImager2D ("survey planner")
• Making CMD files with SSAdmin and EarthImager(2D/3D)
• Process Pseudo3D Chorro Creek data collected in Fall 2021
• Discussion: further Chorro Creek Dog Leg survey designs
• Free time: Work on Field Data Report # 2

Class (F 10/14)

• Survey Planner (in EarthImager2D).
• Overview of Saturday's field trip to the Rinconcada Fault at Vintage Rance (Paso Robles)

Field Day: Sat 11/15

• 2D ERT across the Rinconada Fault at Vintage Ranch. Field handout

Week 5

Lab (T 10/18 or R 10/20)

• Brizziolari Creek Seismic Refraction at Lot H12. Introduction to the seismic refraction mehtod and a data collection

Class (F 10/21)

• Seismic background, seismic refraction surveys, process Brizziolari Creek refraction data, more on electrical resistivity: process Vintage Ranch/Rinconada Fault Data

Week 6

Lab - in clas (T 10/25 or R 10/27)

• More on seismic refraction: critical distance, crossover distance, non-ideal subsurfaces, multiple layers, … etc …
• Process Brizziolari Creek seismic refraction data (see Data Archive page)
• A long refraction line (FWD shot only) at Chorro Creek - but not our reference profile. See "Chorro Creek Long Refraction" in Fall 2020 on the Data Archive Page.
• RES1D for 1D forward electrical modeling: RES1D software. Also see the Software Resources page.
  • Principle of equivalence (see electrical resistivity reading resources): model 1 | model 2
  • Model 1 Calculated Apparent Resistivities | Model 2 Calculated Apparent Resisitivities
  • Model 1 lotted apparent resistivity | Model 2 plotted apparent resistivity
• Other remarks on electrical resistivity …

Class (F 10/28)

• Midterm 1: Electrical Resistivity surveying

Week 7

Lab (T 11/1 or R 11/3)

• Seismic refraction at CCDL Reference Profile

Class (F 11/4)

• Guest speaker(?)
• Seismic refraction concepts: critical distance, crossover distance, non-ideal subsurfaces, multiple layers, … etc …

Week 8

Lab (T 11/8 or R 11/10)

• Lecture material catch up? Equipment ins/outs on Baker Lawn?

Class (F 11/11)

• Leave for Swanton Pacific Ranch field trip

Swanton Pacific Ranch Field Trip

• F 11/11 - Sun 11/13

Week 9

Lab (T 11/15 or R 11/17)

Class (F 11/18)

• Neil Currie from Cleath-Harris Geologists on opportunities for geophysical exploration in the Cuyama Valley relating to the Sustainable Groundwater Management Act.
• Miscellaneous wrap-up.
• Work on geophysical portfolio.

Thanksgiving Break

• Monday 11/21 - Friday 11/25

Week 10

Lab (T 11/29 or R 12/1)

• Work on Geophysical Portfolio

Class (F 12/2)

• Midterm 2: Seismic Refraction

Finals Week: M 12/5 - F 12/9

• Geophysical Portfolio due by Friday 12/9 at 4:30 p.m. in both color hardcopy and PDF format sent by email.

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old schedule sketch: schedule