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a strange GPR anomaly

Posted: Tue Sep 08, 2020 5:47 pm
by geophix
This is a GPR profile I collected close to a storm drain catch basin. The catch basin is at the ground surface between 13 to 16 ft in this profile. The strong "slope" signals to its left look very unusual. 270 MHz antenna.
GPR strange data.png

Re: a strange GPR anomaly

Posted: Wed Sep 09, 2020 4:03 am
by gmradar
I havent seen anything similar before.

Re: a strange GPR anomaly

Posted: Wed Sep 09, 2020 6:55 pm
by geophix
I still tend to believe it might be some kind of diffraction from something close to the ground surface, but it doesn't look like any diffractions I usually see. I haven't really think it through.

Re: a strange GPR anomaly

Posted: Sat Sep 12, 2020 12:07 pm
by geophix
I took another look at the file. Now I realize it might be an underground wall with a slope. I think it's safe to say the mystery is mostly solved.

Re: a strange GPR anomaly

Posted: Wed Sep 16, 2020 3:33 am
by gmradar
Great thanks for the update