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).
The monitoring aims to provide a comprehensive dataset to infer any possible relation between gas geochemistry and seismic activity in the surrounding region. The measurements will last until the end of May 2018.
The Quaternary drilling in Riniken started on March 5th, 2018. This is the first borehole of a series that will be performed by Nagra in other regions of Switzerland.
We collected samples for noble-gas analysis in the sediment pore water within the frame of a pilot project aiming to assess the performance of the He-U/Th dating method. A few impressions of the fieldwork can be found below.