The scientific traverse stopped somewhere between Vostok and Concordia

© J. Chappellaz, CNRS/LGGE

Contrast with an old Russian traverse vehicle Kharkovchanka

© J. Chappellaz, CNRS/LGGE

Vostok Station burried under snow

© J. Chappellaz, CNRS/LGGE

The Vostok treasury : ice cores from the 5G2 drilling

© J. Chappellaz, CNRS/LGGE

The traverse in the middle of megadunes East of Vostok

© J. Chappellaz, CNRS/LGGE

Snow pit digging down to 3 meters of depth

© J. Chappellaz, CNRS/LGGE

Driving on a frozen ocean

© J. Chappellaz , CNRS/LGGE

I work out with the main polar tool : a snow shovel, also called "D1"

© O. Alemany, CNRS/LGGE

Manu Lemeur with his snow radar on the Challenger, under midnight sun light

© J. Chappellaz, CNRS/LGGE

Stuck in too soft snow, surrounded by white-out

© J. Chappellaz, CNRS/LGGE

The traverse team on the way back to Concordia, at Point Barnola

© J. Chappellaz, CNRS/LGGE

Drilling setup at Point Barnola

© J. Chappellaz, CNRS/LGGE

The firn air pumping system and the SARA laser spectrometer inside the science caravan

© J. Chappellaz, CNRS/LGGE

The firn air bladder, with the "Point Barnola" camp in background

© J. Chappellaz, CNRS/LGGE

The plate in honor of our late colleague, Jean-Marc Barnola

© J. Chappellaz, CNRS/LGGE

The camp and the drill setup at Point Barnola

© J. Chappellaz, CNRS/LGGE

Olivier Alemany testing new drill head cutters

© J. Chappellaz, CNRS/LGGE

15 km to go and we get to Concordia Station (which shows up on the horizon) !

© J. Chappellaz, CNRS/LGGE

We know how to behave gentlemanly with women at Concordia

© J. Chappellaz, CNRS/LGGE

Snow dogs over Concordia

© J. Chappellaz, CNRS/LGGE

Vostok-Concordia traverse, Antarctica

December 2011 - February 2012

Location : ground traverse between Vostok and Concordia Stations, Antarctica ; between 78°28'S - 106°48'E, altitude 3460 m and 75°06'S - 123°20'E, altitude 3230 m

Mean annual temperature : entre -53 et -56°C

Team members 2011-2012 : Olivier Alemany (LGGE, Fr.), Jérôme Chappellaz (LGGE, Fr.), David Colin (IPEV, Fr.), Alexandre Leluc (IPEV, Fr.), Emmanuel Lemeur (LGGE, Fr.), Martin Schneebeli (SLF, CH), Anthony Vende (IPEV, Fr.). The traverse on its way into Vostok from Concordia involved 8 members.

Activities : the traverse, a First in this sector of Antarctica, aimed at documenting the spatial and temporal variability of snow accumulation and of geochemical parameters of the snow, as well as at performing an intermediate drilling at a site with lower accumulation rate than at Concordia Station.

My work in the field : coordinator of the IPEV project EXPLORE articulated with the VANISH project for this traverse, I conducted the firn air sampling at the drilling site called Point Barnola, and I used during that time a SARA laser spectrometer.