EKKO_Project version 5 Webinar-the intuitive GPR data software EKKO_Project version 5 Webinar-the intuitive GPR data software
close X
Nav Menu
 
 

The Basics of Interpreting GPR Data – Part 1

Webinar: The Basics of Interpreting GPR Data – Part 1

This webinar explores the basics of signals seen on GPR cross-sections. Understand responses from subsurface objects and boundaries. Learn that not everything you see in a GPR line is necessarily from the subsurface.


 

    GPR Interpretation Basics – Part 1

  • 0:00 – Introduction
  • 1:55 – What causes GPR Reflections?
  • 4:25 – What controls the amount of GPR energy that reflects?
  • 12:37 – GPR reflections from metallic and non-metallic utilities
  • 16:17 – Geological reflections example
  • 16:54 – Utility reflections example
  • 18:50 – The shape of GPR signals
  • 19:39 – Attenuation of GPR Signals
  • 22:49 – Types of subsurface objects
  • 24:20 – Hyperbolas in GPR images
  • 27:00 – Tracking the path of a utility
  • 28:32 – Crossing a utility at an angle
  • 33:38 – Reflections from boundaries
  • 34:20 – Direct air and ground arrivals at the top of all GPR images
  • 37:24 – Direct arrivals change as surface conditions change
  • 38:40 – Background radio frequency noise in GPR images
  • 42:55 – Depth of GPR signal penetration
  • 44:03 – GPR Interpretation Quiz
  • 44:38 – Question 1 – Which target is likely non-metallic?
  • 46:05 – Question 2 – What is the composition of the targets?
  • 47:36 – Question 3 – Was this concrete data collected in the basement or on the second floor?
  • 49:18 – Question 4 – What is the most plausible explanation of what happened to the pipe on Line 3?
  • 51:22 – Question 5 – How do you interpret the vertical signals in the middle of this GPR line?
  • 52:26 – Question 6 – Why is hyperbola 1 wider than hyperbola 2?
  • 54:00 – Question 7 – Where is the gravel layer?
  • 55:13 – Question 8 – What is happening in the concrete?
  • 56:40 – Question 9 – Why are there no reflections here?
  • 58:53 – Question 10 – What is causing the strong reflectors at about 1.6 meters?
  • 1:00:15 – Summary
  • 1:01:26 – Finish

Don’t miss out on new content! Subscribe to our mailing list & YouTube channel!!

 

 
FacebookLinkedInTwitterGoogle+Email