Search found 9 matches

by linuxpoe
Sun May 24, 2020 6:41 am
Forum: Oil and Gas Exploration
Topic: Google Says It Will Not Build Custom A.I. for Oil and Gas Extraction
Replies: 7
Views: 494

Re: Google Says It Will Not Build Custom A.I. for Oil and Gas Extraction

You guys don't think geophysics is hard enough? Let's keep geophysicists and computer geeks separated. :lol:
by linuxpoe
Thu Jul 21, 2011 8:24 pm
Forum: Near Surface Geophysics
Topic: Radio mode in line locators
Replies: 9
Views: 4485

Re: Radio mode in line locators

This is very interesting! Were you able to find the same line with the passive power mode? I couldn't pick it up with the power mode. The electric lines over that area were mostly overhead, this might be reason it didn't carry the power line signals. Today I actually found a fiber optic line with t...
by linuxpoe
Thu Jul 21, 2011 7:57 am
Forum: Near Surface Geophysics
Topic: Radio mode in line locators
Replies: 9
Views: 4485

Re: Radio mode in line locators

Today I actually found a fiber optic line with the radio mode. Amazing! It's so convenient. The line was in the woods and bushes, it feels good that I don't have to use any other tools including the transmitter. I don't know why I can pick up the line with the radio mode, perhaps the line had a cond...
by linuxpoe
Mon Jun 13, 2011 8:57 pm
Forum: Near Surface Geophysics
Topic: Radio mode in line locators
Replies: 9
Views: 4485

Re: Radio mode in line locators

I have used RD4000 for more than 2 years, it's only relatively new.
by linuxpoe
Sun Jun 12, 2011 3:54 pm
Forum: Near Surface Geophysics
Topic: GPR 400MHZ for fiber optic
Replies: 21
Views: 8111

Re: GPR 400MHZ for fiber optic

OK, tIme for the truth. The signals were caused by TWO rebar running parallel to each other, about 1' apart. Apparently, the center ringing was the combined effects of two rebar. I am sure the signals would look different if I change the rebar spacing. I will give it a try next time. This is really...
by linuxpoe
Sun Jun 12, 2011 3:53 pm
Forum: Near Surface Geophysics
Topic: Radio mode in line locators
Replies: 9
Views: 4485

Re: Radio mode in line locators

Thanks, guys! I am definitely going to try it!
by linuxpoe
Fri Jun 10, 2011 3:15 pm
Forum: Near Surface Geophysics
Topic: Radio mode in line locators
Replies: 9
Views: 4485

Radio mode in line locators

Has anyone used the passive radio mode in the receivers of cable locators? I am just curious whether it's really useful or not. I use the passive power mode a lot, but not the radio mode.
by linuxpoe
Sun Aug 30, 2009 9:32 am
Forum: Near Surface Geophysics
Topic: underground utility mapping
Replies: 3
Views: 4372

underground utility mapping

Sometimes we work in large sites and the paint for underground utilities doesn't last long. We normally do some hand drawings, but they are not accurate and not to scale. It' hard to find the marks on the ground after a while. We have GPS but we are not sure how to use it for utility mapping, any id...
by linuxpoe
Tue Aug 18, 2009 8:32 pm
Forum: Near Surface Geophysics
Topic: EM mapping
Replies: 5
Views: 4018

Re: EM mapping

It depends on the instrument you use. It can be a couple of feet, 10 feet, 40 feet ...
The deeper it is, the worse the resolution is.