International expedition to Tiksi, Yakutia

April 21, 2017

Fig. 1. Participants of the expedition.

Fig. 1. Participants of the expedition.

In the spring of 2017 an international multi-month project «Bykovsky Spring 2017: Subaquatic permafrost thaw - biogeochemical, microbiological and geophysical gradients and its implications for climate change» was launched that is сoordinated by The Alfred Wegener Institute for Polar and Marine Research (Potsdam, Germany). Scientific tasks of the project are microbiological, sedimentological, geochemical, climatological, hydrological, geocryological and geophysical studies.

Fig. 2. Aleksei Sherstnev with a modification of  GROT 12 series georadars and antennas of 10 meters.

Fig. 2. Aleksei Sherstnev with a modification of  GROT 12 series georadars and antennas of 10 meters.

We took our part in the expedition to Bykovsky Peninsula in April 2017 to carry out georadar surveys of the lakes of different salinity in order to obtain UWB georadar data and to compare our results with data obtained by other methods, including geological columns.

In total 14 gpr profiles were made with a different modification of the GROT 12 georadars using antennas 10m, 2m and 0.5m, receivers of different dynamic range and transmitters of 9 kV and 15 kV.

Fig. 3. Georadar GROT 12H with antennas 0.5 meters on the ice of the lake.

Fig. 3. Georadar GROT 12H with antennas 0.5 meters on the ice of the lake.

Fig. 4. Georadar GROT 12H with antennas 0.5 meters on the ice of the lake.

Fig. 4. Georadar GROT 12H with antennas 0.5 meters on the ice of the lake.

Fig. 5. Ice of the lake.

Fig. 5. Ice of the lake.

Fig. 6. Alexey Sherstnev (right) with Canadian specialist Michael   Angelopoulos (left).

Fig. 6. Alexey Sherstnev (right) with Canadian specialist Michael Angelopoulos (left).

Fig. 7. At work.

Fig. 7. At work.

Fig. 8. Researchers at work.

Fig. 8. Researchers at work.

Fig. 9. Coming back.

Fig. 9. Coming back.

We thank the project coordinators and participants of the expedition for the opportunity and look forward to the fruitful results of the joint work.