At the end of the summer of 2025, we managed to drill a 35.7-meter ice core at the highest point of the Grigoriev ice field at an altitude of 4,600 meters (Tien Shan Mountains, Kyrgyzstan).

After four days of acclimatization, four of us reached the drilling point, where we spent six nights.

During the precise tritium analysis of the ice core, we intend to answer to these research questions:

• What is the natural tritium content of the precipitation accumulated before 1952?
• Is the effect of the solar cycle visible in the natural tritium level?
• How do the tritium levels of recent decades compare to those experienced in the 1930s and 1940s

Résztvevők:

Árpád Badics (M. D.)

Árpád László Badics

Zsolt Benkó (HUN-REN ATOMKI)

Elemér László (HUN-REN ATOMKI)

Richárd McIntosh (Debreceni Egyetem)

László Palcsu (HUN-REN ATOMKI)

Gergely Surányi (HUN-REN Wiegner)

Vargas Danny (HUN-REN ATOMKI)