Landscape-permafrost conditions and factors of summer runoff formation of small coastal lowland rivers

• Published in: E3S Web of Conferences
• Main Authors: Tregubov Oleg, Gartsman Boris, Lebedeva Liudmila, Nuteveket Marina, Tarbeeva Anna, Uyagansky Konstantin, Shekman Evgeniy, Shepelev Viktor
• Format: Article in Journal/Newspaper
• Language: English; French
• Published: EDP Sciences 2020
• Subjects: envir; geo; Anadyr; Anadyr’; Anadyr'; Chukotka; Ice; permafrost
• Online Access: https://doi.org/10.1051/e3sconf/202016305015; https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/23/e3sconf_vc2020_05015.pdf; https://doaj.org/article/a989d35fdfdb4f7a9fba3f36bac12e72

River feed and flow regime in the Anadyr lowland remain stable with significant interannual fluctuations in the amount of summer precipitation (70-180 mm). The lack of summer precipitation is compensated by the suprapermafrost groundwater of the active layer, which is formed by meltwater from seasonal underground ice. In July 2019, complex permafrost-hydrological studies were conducted in the Ugolnaya-Dionisia river basin (Chukotka, Russia) to determine the patterns of formation and dynamics of underground and surface runoff. Seasonal active layer groundwater storage that formed as a result of the melting of seasonal ice was estimated. The territory was classified according to the unite discharge, potential and established water sources. Patterns and factors of seasonal and daily dynamics of the river regime are revealed.