Gas monitoring in Japan

At present we are installing an on-line gas monitoring system at an hydrothermal well in the city of Beppu (Oita Prefecture, Japan), along the Japan Median Tectonic Line. This project is performed within the frame of a scientific collaboration between the Institute of Geological Sciences of the University of Bern, the Swiss Federal Institute of Aquatic Science and Technology (Eawag) (Dr. Kipfer), the Atmosphere and Ocean Research Institute (AORI) of The University of Tokyo (Dr. Sano), and the Institute for Geothermal Sciences of Kyoto University (Dr. Shibata).

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.

Tritium emission related to the Fukushima Dai-ichi nuclear accident

Our manuscript on the tritium release form the Fukushima Dai-ichi nuclear accident just appeared on-line:

Takahata, N., Tomonaga, Y., Kumamoto, Y., Yamada, M., & Sano, Y. (2018). Direct tritium emissions to the ocean from the Fukushima Dai-ichi nuclear accident. Geochem. J., 52, doi:10.2343/geochemj.2.0499.

Thank to Prof. Takahata (Atmosphere and Ocean Research Institute, The University of Tokyo) for leading the manuscript preparation!

Diatoms and paleosalinity in Lake Van during MIS5e and MIS7e

Our recent reconstruction of paleosalinity (and the related lake levels) using the diatom record from Lake Van is available on-line:

North, S. M., Stockhecke, M., Tomonaga, Y., & Mackay, A. W. (2017). Analysis of a fragmentary diatom record from Lake Van (Turkey) reveals substantial lake-level variability during previous interglacials MIS7 and MIS5e. J. Paleolimnol., doi:10.1007/s10933-017-9973-z.

Thanks to Sam, Mona, and Ans for this fruitful collaborative work!