The first data on methane concentrations in degassing griffins of Lake Baskunchak Dmitry N. Garkusha, Yuri A. Fedorov, Boris V. Talpa, Roman G. Trubnik and Evgeny A. Kovalev E3S Web Conf., 407 (2023) 02012 Published online: 02 August 2023 DOI: 10.1051/e3sconf/202340702012