Results 191 to 200 of about 4,605 (227)

Lakes as geoindicators of thermokarst landscape changes following wildfires

Environmental Monitoring and Assessment
Rapid landscape changes in the Arctic are occurring at an accelerated rate. The most common disturbances that cover the largest areas of the Arctic are wildfires. It is well known that lakes serve as a good proxy for identifying thermokarst processes. However, the impact of fires is often overlooked in analyses of lake dynamics.
Piotr, Janiec, Jakub, Nowosad, Zbigniew, Zwoliński   +2 more
openaire   +2 more sources

Stochastic modelling of thermokarst lake distributions

Thermokarst lakes are among the most common and dynamic landscape features in ice-rich permafrost regions. They form due to melting of ground ice and subsequent ground subsidence. Their presence and dynamic behavior do not only influence the carbon exchange with the atmosphere by accelerating permafrost thaw and facilitating the production of methane ...
Constanze Reinken, Victor Brovkin, Philipp de Vrese, Ingmar Nitze, Helena Bergstedt   +4 more
openaire   +1 more source

Thermokarst lake to lagoon transitions in Eastern Siberia

2020
As the Arctic coast erodes, it drains thermokarst lakes, transforming them into lagoons, and, eventually, integrates them into subsea permafrost. Lagoons represent the first stage of a thermokarst lake transition to a marine setting and possibly more saline and colder upper boundary conditions.
Angelopoulos, Michael (Dr.), Overduin, Pier Paul (Dr.), Westermann, Sebastian, Tronicke, Jens (Prof. Dr.), Strauss, Jens, Schirrmeister, Lutz (Dr.), Biskaborn, Boris (Prof.), Liebner, Susanne (Prof. Dr.), Maksimov, Georgii, Grigoriev, Mikhail N., Grosse, Guido (Prof. Dr.)   +10 more
openaire   +1 more source

Rapid climatic events as recorded in Middle Weichselian thermokarst lake sediments

Quaternary Science Reviews, 2008
From a Middle Weichselian sediment sequence in the opencast brown coal mine of Reichwalde (eastern Germany), a ∼40 cm thick thermokarst gyttja deposit has been sampled.
Bohncke, S. J. P., Bos, J. A. A., Engels, S., Heiri, O., Kasse, C.   +4 more
openaire   +5 more sources

Consistent patterns of the size distribution of thermokarst lakes

Doklady Earth Sciences, 2017
The purpose of this work is to study empirically the patterns of size distribution of thermokarst lakes within lacustrine thermokarst plains. Investigations were performed at 16 sites with various geomorphological, geocryological, and physical geographical conditions (Kolyma Lowland, Western Siberia, Lena River valley, Alaska).
A. S. Viktorov, V. N. Kapralova, T. V. Orlov, O. N. Trapeznikova, M. V. Arkhipova, P. V. Berezin, A. V. Zverev, E. N. Panchenko, S. A. Sadkov   +8 more
openaire   +1 more source

The importance of anaerobic oxidation of methane in thermokarst lakes

2023
About 40% of the annual methane emissions originate from natural, non-anthropogenic sources. These include mainly freshwater sediments, in which significant increase in methane emissions has been observed throughout the past decades with the ongoing global temperature rise.
Orit Sivan, André Pellerin, Noam Lotem, Efrat Eilani Russak, Yarden Gerera, Katey Walter-Anthony   +5 more
openaire   +1 more source

Investigating effects of thermokarst lakes on permafrost under equilibrium conditions

Science of The Total Environment
The degradation of permafrost due to climate change has significant effects on the hydrological processes and ecosystems in arctic and subarctic regions. Thermokarst lakes, formed from permafrost thaw and subsidence, play a crucial role in this process by influencing heat storage and exchange and accelerating the thaw rate of the surrounding permafrost.
Henry, Brisebois, Jason, Olsthoorn, Élise, Devoie   +2 more
openaire   +2 more sources

Thermokarst‐lake‐basin sediments, Tuktoyaktuk Coastlands, western arctic Canada

Sedimentology, 1996
ABSTRACTThree stages of deposition are distinguished in thermokarst‐lake‐basin sequences in ice‐rich permafrost of the Tuktoyaktuk Coastlands, western arctic Canada: (1) widespread retrogressive thaw slumping around lake margins that rapidly transports upland sediments into thermokarst lakes, forming a distinctive basal unit of impure sand and/or ...
openaire   +1 more source

Thermokarst lakes of the western Canadian Arctic

Thienpont, JR. 2024. Thermokarst lakes of the western Canadian Arctic. SILnews 84: 13-15. 
openaire   +1 more source

Detection of thermokarst lake drainage events in the northern Alaska permafrost region

Science of the Total Environment, 2022
Yating Chen, Aobo Liu, Xiao Cheng
exaly