GPR data with aircraft buried in the ice in Greenland

Geophysical applications on environmental investigation, mineral prospecting, engineering, archaeology, forensics, hydrology...
Post Reply
ADobrovolskiy
Silver Member
Silver Member
Posts: 37
Joined: Wed Mar 27, 2019 4:58 pm

GPR data with aircraft buried in the ice in Greenland

Post by ADobrovolskiy »

Hi,

past year I had a chance to participate in the expedition in Greenland. Aim was to locate P-39 fighter from famous Lost Squadron.

Full story is here - https://www.ugcs.com/news-entry/latvian ... ated-syste

After almost one year I managed to prepare GPR data for publication.

https://files.ugcs.com/s/HiHWy4izwcTBDbe

Search areas were determined using historical data provided by the organisers of the expedition, AHPS / Fallen American MIA Repatriation Foundation (FAMIARF).

We planned to explore 2 search areas where the crashed aircraft was most likely to be found. These areas were estimated based on 2 different models of the ice drift movement in this part of the Greenland ice sheet.

Search operations began in the search area that was closer to the expedition camp, naturally.

The first flight was conducted at the altitude of 4m, at the speed of 2m/s, and with the distance between survey lines being 10m. In reality, the altitudes varied from 2 to 4m because of the drone's barometer's drift during flight.

Relevant GPR data can be found in the archive 'Echo Search GPR data (shifted) 1.zip'.

During the flight, an anomaly was detected.

To confirm this anomaly 2 additional surveys were conducted.

First additional survey was conducted at the altitude of 3m (in reality the altitudes varied from 1.5 to 5m because of the drone's barometer's drift in cold temperatures), at the speed of 1m/s, and with the distance between survey lines being 5m. The directions of survey lines were the same as in the previous flight.

The second additional survey used the same parameters but the directions of survey lines were perpendicular to those in the previous flights.

The presence of the anomaly was confirmed.

Data from these additional surveys can be found in the archives 'Echo Search GPR data (shifted) 2.zip' and 'Echo Search GPR data (shifted) 3.zip'.

Combined data from the cross-grid survey allowed to determine the coordinates of the anomaly.

NOTE. The coordinates in the data files were intentionally moved several hundred meters in unspecified direction for confidentiality purposes.
Last edited by ADobrovolskiy on Thu Apr 02, 2020 2:32 pm, edited 1 time in total.

User avatar
geophix
VIP Member
VIP Member
Posts: 933
Joined: Fri Jul 24, 2009 9:26 am

Re: GPR data with aircraft buried in the ice in Greenland

Post by geophix »

Cool, thank for the data!

topgpr
Platinum Member
Platinum Member
Posts: 102
Joined: Tue Mar 27, 2012 11:20 am

Re: GPR data with aircraft buried in the ice in Greenland

Post by topgpr »

Anyone has an GPR image to show? It would be very interesting to see what it look like in the GPR data.

ADobrovolskiy
Silver Member
Silver Member
Posts: 37
Joined: Wed Mar 27, 2019 4:58 pm

Re: GPR data with aircraft buried in the ice in Greenland

Post by ADobrovolskiy »

one of the profiles
2018-06-30-13-50-35-gpr-for-publication-processed.png
Last edited by ADobrovolskiy on Thu Apr 02, 2020 2:36 pm, edited 1 time in total.

ADobrovolskiy
Silver Member
Silver Member
Posts: 37
Joined: Wed Mar 27, 2019 4:58 pm

Re: GPR data with aircraft buried in the ice in Greenland

Post by ADobrovolskiy »

Horizontal slice, combined from the data gathered in 5 flights
slice.png
Last edited by ADobrovolskiy on Thu Apr 02, 2020 2:34 pm, edited 1 time in total.

topgpr
Platinum Member
Platinum Member
Posts: 102
Joined: Tue Mar 27, 2012 11:20 am

Re: GPR data with aircraft buried in the ice in Greenland

Post by topgpr »

Thanks, ADobrovolskiy. I never viewed ariborne GPR data before. Is the ground surface flat?

ADobrovolskiy
Silver Member
Silver Member
Posts: 37
Joined: Wed Mar 27, 2019 4:58 pm

Re: GPR data with aircraft buried in the ice in Greenland

Post by ADobrovolskiy »

It depends on flight profile and altitude. In published data from Greenland you will not see reflection from surface because surface was inside of GPR dead zone (4-5 meters for used antenna).

gmradar
Platinum Member
Platinum Member
Posts: 158
Joined: Thu Mar 29, 2012 5:27 pm

Re: GPR data with aircraft buried in the ice in Greenland

Post by gmradar »

Thats nice data! Well done!
Symetrics Geophysics and NDT
Your reliable Geo Supplier
Shop :arrow: https://www.gmradar.com/shop.html#/
Website: www.symetrics-ndt.com

Post Reply
  • Similar Topics
    Replies
    Views
    Last post