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.
Highlights
One of the challenges of economic expansion into the Arctic and Subarctic areas is limited water resources for water supply of settlements and industry [1]
Coastal North-Eastern territories lack any detailed catchment studies. They are situated at the margin of the Arctic and Pacific Oceans drainage basins and characterized by transient climate and permafrost conditions of river runoff generation
Mountain tundra at the upper part of the basins was an exception with active layer thickness up to 1-1,5 m
Summary
One of the challenges of economic expansion into the Arctic and Subarctic areas is limited water resources for water supply of settlements and industry [1] It is important for the coastal lowlands of North-East Eurasia covered by continuous permafrost. Coastal North-Eastern territories lack any detailed catchment studies They are situated at the margin of the Arctic and Pacific Oceans drainage basins and characterized by transient climate and permafrost conditions of river runoff generation. In this regard investigations of small-scale mechanisms of streamflow formation at the coastal permafrost-covered lowland rivers are relevant. We mentioned that melting of seasonal ground ice of the active layer could potentially contribute water to the small permafrost lowlands rivers [11]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
