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

Abstract

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.

Parameterizing a hydrological model using a short-term observational data set to study runoff generation processes and reproduce recent trends in streamflow at a remote mountainous permafrost basin

“…. , 1988-1990, recent studies at Chukotka (Tregubov et al, 2020) and the Lena River delta (Tarbeeva et al, 2020). We emphasize the need for open access to the detailed hydrometeorological data of such research sites which can provide the opportunity for multi-criteria assessment of hydrological models in different conditions found in the permafrost zone (e.g.…”

Parameterizing a hydrological model using a short‐term observational dataset to study runoff generation processes and reproduce recent trends in streamflow at a remote mountainous permafrost basin

“…The 3‐year extensive observations at the Suntar‐Khayata Station can be regarded as a good example of such an approach. Among other expeditions to remote regions we may mention historical studies at the Putorano Plateau in 1988–1990 (Reports…, 1988–1990), recent studies at Chukotka (Tregubov et al, 2020) and the Lena River delta (Tarbeeva et al, 2020). We emphasize the need for open access to the detailed hydrometeorological data of such research sites which can provide the opportunity for multi‐criteria assessment of hydrological models in different conditions found in the permafrost zone (Fang et al, 2019; Makarieva et al, 2017; Makarieva, Nesterova, Lebedeva, & Sushansky, 2018; Rasouli et al, 2019).…”

Long-term modelling of runoff formation processes at remote mountainous permafrost basin using historical data of short-term special observations (Suntar-Khayata Ridge, Eastern Siberia).

“…. , 1988-1990, recent studies at Chukotka (Tregubov et al, 2020) and the Lena River delta (Tarbeeva et al, 2020). We emphasize the need for open access to the detailed hydrometeorological data of such research sites which can provide the opportunity for multi-criteria assessment of hydrological models in different conditions of permafrost zone (e.g.…”