Search found 3 matches

by SeismicStorm
Tue Feb 09, 2021 9:48 am
Forum: Near Surface Geophysics
Topic: Good devices to detect Void/graves
Replies: 7
Views: 304

Re: Good devices to detect Void/graves

Welcome. 400 MHz will normally allow you for penetration up to approximately 8 m below the surface - but it all depends on the geological conditions.
Though I see a lot of people also using 500 MHz antennas for such research, but their penetration range is smaller.
by SeismicStorm
Wed Feb 03, 2021 8:41 pm
Forum: Near Surface Geophysics
Topic: Good devices to detect Void/graves
Replies: 7
Views: 304

Re: Good devices to detect Void/graves

As geophix said, GPR would be most likely the best for graves, cavity, and voids. If you aim for looking for graves, they are usually shallow. I had an opportunity to look for graves - we used 400 MHz antenna for that. Yet keep in mind that for graves that are older it may not be that effective. But...
by SeismicStorm
Wed Feb 03, 2021 8:24 pm
Forum: Near Surface Geophysics
Topic: time-lapse for ERT measurements conducted with different models of Terrameter
Replies: 0
Views: 59

time-lapse for ERT measurements conducted with different models of Terrameter

Hello, I have a question related to Res2dinv data processing for ERT. I conducted the measurements three times at the same profile and during stage 1 of my research I used Terrameter LS, while during two next stages I performed the measurements using Terrameter LS 2. It would not be much of an issue...