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 Post subject: Interpretation Challenge
PostPosted: Wed Sep 24, 2014 6:00 am 
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Joined: Fri Apr 17, 2009 7:52 am
Posts: 379
Location: Boden, Sweden
Hi all of you!
I got this file from a colleague of mine. The file was collected using a GCB-500 ground
coupled antenna and an Akula 9000C control unit in Moscow, Russia. He asked me to
analyze it and interpret as much as I could out from it. It is not usual that without any
further information one can get as close as I did. So, I thought, this ought to be an easy
file to interpret and use as learning material. Would anyone of you take the challenge and
interpret some part or all of the file?
Thank you all for your inputs,
Regards,


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Reinaldo Alvarez Cabrera
Geoscanners AB
Sweden
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PostPosted: Tue Sep 22, 2015 10:48 am 
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Joined: Mon Mar 16, 2015 7:26 pm
Posts: 13
it is better to see raw data file because there are some questions . like how many traces per meter?. but roughly I can say that( there are concrete surface on the left side and near the right side with metallic bodies . and in the middle two conductive layers)


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PostPosted: Mon Apr 04, 2016 9:21 am 
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Joined: Fri Apr 17, 2009 7:52 am
Posts: 379
Location: Boden, Sweden
Hi,
Thank you for answering, a little bit late of me :oops: , of course.
But, I got my reasons. Well, I can post the raw data, but it is not going
to be very useful for many since it is in our GSF format that only our
software and Dean's GPRSlice open at the moment.
There are 100 traces/meter in the file and you are right about the
concrete meshes, of course. The interesting thing here is on the left side,
or should I say, on the left concrete slab. In the middle there are layers,
I wouldn't say they are conductive, but that is a question of interpretation
and what you meant by "conductive". I'm sure you noticed that there is
no re-bar mesh in the middle though.
Again thank you for answering it is always nice to have some people involved.
My truly best regards,

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Reinaldo Alvarez Cabrera
Geoscanners AB
Sweden
http://www.geoscanners.com


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PostPosted: Wed Jul 06, 2016 9:35 pm 
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Joined: Mon Mar 16, 2015 7:26 pm
Posts: 13
Hi,

I mean a conductive layer e.g clay and clayey layer in the middle .on the left side concrete slab there is difference in rebar level that might be caused by Subsidence. finally there no any previous information .

regards


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PostPosted: Tue Jul 19, 2016 12:33 pm 
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Joined: Fri Apr 17, 2009 7:52 am
Posts: 379
Location: Boden, Sweden
Actually two meshes at the beginning, in the middle they pour concrete but "forgot" to put the re-bar mesh.
Probably the counted on the fact that no one will know. Anyway, the interesting part as I thought is that
the debris from the old re-bar mesh was not removed from the site. You can see it clearly between traces
1886 and 2640. This fact was confirmed later on after digging.
You were right about the conductive layers between traces 764 and 1886, that's further more a very wet area.
Thank you for answering, it is always interesting to hear some other interpretations of the same data set.
Regards,

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Reinaldo Alvarez Cabrera
Geoscanners AB
Sweden
http://www.geoscanners.com


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