Search found 10 matches

by jalfer
Fri Mar 06, 2020 4:38 am
Forum: Near Surface Geophysics
Topic: Locating a man made tunnel
Replies: 21
Views: 8976

Re: Locating a man made tunnel

Hi, Recently I did a project where we located basements extents underneath the pavement. Some of them had a "convex" ceiling and was easy to find it (see picture https://ibb.co/rM0Gvwz ) but the ones with flat ceiling were more difficult. As somebody said, an electromagnetical survey might work as w...
by jalfer
Fri Mar 06, 2020 4:29 am
Forum: Near Surface Geophysics
Topic: New open source software to process GPR data - UgCS GeoHammer
Replies: 2
Views: 2959

Re: New open source software to process GPR data - UgCS GeoHammer

Hi,

i downloaded but when clicked the start.cmd file (using windows) the command windows flash and close it.

Am I doing something wrong?
by jalfer
Thu Oct 03, 2019 9:39 am
Forum: Near Surface Geophysics
Topic: GIS
Replies: 17
Views: 8917

Re: GIS

Does not answer my question, but I appreciate any comment, especially because I don't have much experience. I finished my degree less than 5 years ago and worked in a company doing mostly resistivity. We used Surfer and MapInfo-Discover for 3D. Then moved to the UK and work in a company where most o...
by jalfer
Wed Sep 25, 2019 5:39 am
Forum: Near Surface Geophysics
Topic: Use ground penetrating radar with GPS
Replies: 30
Views: 33270

Re: Use ground penetrating radar with GPS

Hi, yesterday I finally get GPS (Trimble R8s) working with GPR (IDS). A 9-serial cable connected from the antenna to the toughbook, but I needed an NMEA upgrade license as well (£160 from the local dealer). Once I got the license, plug the cable, open the software and it automatically recognised whi...
by jalfer
Wed Sep 25, 2019 5:34 am
Forum: Near Surface Geophysics
Topic: GIS
Replies: 17
Views: 8917

Re: GIS

I don't think CAD is good for plotting 3D geophysical data. Try something else like Volxler. yes, I was trying in CAD civil 3D as we already have that software. Unfortunately, land surveyors think because they have software that includes "3D" they can plot geophysics data :roll: Though work try to ...
by jalfer
Thu Sep 19, 2019 3:09 am
Forum: Near Surface Geophysics
Topic: GIS
Replies: 17
Views: 8917

Re: GIS

Hi,

Does someone know if there is a way on AutoCAD when you plot your resisitivity data in 3D, can we create contours which depend on the RES. I uploaded the data with E,N,Z,R (R= raw description) and I'm trying to draw isolines according to that description (resistivity) but don't know how..

Thanks
by jalfer
Tue Sep 18, 2018 2:03 pm
Forum: Near Surface Geophysics
Topic: Foundation scaning
Replies: 2
Views: 825

Re: Foundation scaning

Hi evgeo,

thank you. I knew about that method the problem is we can't drill a hole, is close to the railway so that means tons of paperwork. Anyway, the client told us they will replace the mast with a new one same size to avoid problems.

Thank you
by jalfer
Mon Sep 03, 2018 11:12 am
Forum: Buy, Sell or Trade
Topic: Looking for used EM38 Mk2
Replies: 2
Views: 780

Re: Looking for used EM38 Mk2

Not sure if this one can works for you, as is located in UK, but I found these one looking for other used equipment

https://www.geomatrix.co.uk/used-equipment/

Cheers
by jalfer
Tue Aug 21, 2018 6:38 pm
Forum: Near Surface Geophysics
Topic: res2INV errors
Replies: 4
Views: 1322

Re: res2INV errors

Hi,

have you checked the array type in the .dat file? and compare the files.

Normally those kind of errors are a pain but when you realised the problem you see it was a easy mistake
by jalfer
Tue Aug 21, 2018 6:15 pm
Forum: Near Surface Geophysics
Topic: Foundation scaning
Replies: 2
Views: 825

Foundation scaning

Hi all, I have to determine the depth of a few concrete foundations. I believe depth arent deeper than 8 meters, so first instance, I thought GPR, however as I dont have much experience with it not sure if I can do it... Then I thought ERT, as I have worked mostly with it, however not sure if the eq...