Results 51 to 60 of about 4,444 (222)

Landsat-Based Trend Analysis of Lake Dynamics across Northern Permafrost Regions [PDF]

open access: yes, 2017
Lakes are a ubiquitous landscape feature in northern permafrost regions. They have a strong impact on carbon, energy and water fluxes and can be quite responsive to climate change.
Arp, Christopher D.   +6 more
core   +1 more source

Simulation and Prediction of Thermokarst Lake Surface Temperature Changes on the Qinghai–Tibet Plateau

open access: yesRemote Sensing
Thermokarst lakes are shallow bodies of freshwater that develop in permafrost regions, and they are an essential focus of international permafrost research.
Chengming Zhang   +7 more
doaj   +1 more source

RISK ASSESSMENT BASED ON MATHEMATICAL MORPHOLOGY OF LANDSCAPE MODELS (CASE STUDY OF THERMOKARST PLAINS)

open access: yesGeography, Environment, Sustainability, 2013
The paper presents a new approach for risk assessment of impact of thermokarst processes on engineering structures; it is based on the methods of mathematical morphology of landscape.
Alexey Victorov, Veronika Kapralova
doaj   +1 more source

Effect of permafrost thawing on organic carbon and trace element colloidal speciation in the thermokarst lakes of western Siberia [PDF]

open access: yes, 2011
To examine the mechanisms of carbon mobilization and biodegradation during permafrost thawing and to establish a link between organic carbon (OC) and other chemical and microbiological parameters in forming thermokarst (thaw) lakes, we studied the ...
B. Dupré   +5 more
core   +2 more sources

Constraining bubbling of methane from thermokarst lakes [PDF]

open access: yesEos, Transactions American Geophysical Union, 2013
In northern thermokarst lakes, which form in depressions left as permafrost thaws, methane, a greenhouse gas, can be released from lake sediments to the atmosphere through bubbling, or ebullition. Constraining the amount of methane released through bubbling would help scientists understand the role of thawing permafrost in the carbon cycle and global ...
openaire   +1 more source

A fully automatic framework for sub-pixel mapping of thermokarst lakes using Sentinel-2 images

open access: yesScience of Remote Sensing, 2023
Mapping and monitoring thermokarst lakes are crucial to understanding the impact of climate change on permafrost regions and quantifying permafrost-related carbon emissions. Several automatic methods based on remote sensing images have been developed for
Yuanyuan Qin, Chengyuan Zhang, Ping Lu
doaj   +1 more source

Permafrost hydrology in changing climatic conditions: seasonal variability of stable isotope composition in rivers in discontinuous permafrost [PDF]

open access: yes, 2015
Role of changing climatic conditions on permafrost degradation and hydrology was investigated in the transition zone between the tundra and forest ecotones at the boundary of continuous and discontinuous permafrost of the lower Yenisei River.
Nyland, Kelsey E.   +7 more
core   +1 more source

Carbon and nitrogen pools in thermokarst-affected permafrost landscapes in Arctic Siberia [PDF]

open access: yes, 2017
Ice rich Yedoma-dominated landscapes store considerable amounts of organic carbon (C) and nitrogen (N) and are vulnerable to degradation under climate warming.
Fuchs, Matthias   +6 more
core   +1 more source

Seafloor Sediments, Morphologic Features, and Geotechnical Properties of Harrison Bay in the Alaskan Beaufort Sea

open access: yesEarth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Sediments on Arctic continental shelves are impacted by sea ice and ice‐related processes for up to 9 months per year. As a result, seabed morphology in cold regions can exhibit features such as ice scours which are absent on lower‐latitude shelves.
E. F. Eidam   +7 more
wiley   +1 more source

The chronostratigraphy of Late Pleistocene glacial and periglacial aeolian activity in the Tuktoyaktuk Coastlands, NWT, Canada [PDF]

open access: yes, 2006
Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major stratigraphic settings: within a sand unit characterized by ...
Ager   +58 more
core   +2 more sources

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