September 2018 – Yama Tomonaga

Drilling Gebenstorf-Vogelsang (AG)

Unexpectedly successful: we were able to squeeze sandy sediments into our small copper tubes for the analysis of noble gases in the sediment pore water! Here a few impressions…

… and here additional evidence in a short video!

Article on the oxygen dynamics in the FE experiment

Our first article on the evolution of the gas composition in the Full-scale Emplacement (FE) experiment has been published as:

Giroud, N., Tomonaga, Y., Wersin, P., Briggs, S., King, F., Vogt, T., & Diomidis, N. (2018). On the fate of oxygen in a spent fuel emplacement drift in Opalinus Clay. Appl. Geochem., 97, 270-278, doi:10.1016/j.apgeochem.2018.08.011.

Here you can download the manuscript for FREE (until Oct. 25th 2018).

Last cores from the Gebenstorf-Brüel (AG) borehole

The drilling operations at Gebestorf-Brüel (AG) are almost finished. Here a few impressions of the last few cores (consolidated material, thus not targeted by my sampling for noble-gas analysis).