Results 21 to 30 of about 1,136,547 (231)

Complex Vulnerabilities of the Water and Aquatic Carbon Cycles to Permafrost Thaw

Frontiers in Climate, 2021
The spatial distribution and depth of permafrost are changing in response to warming and landscape disturbance across northern Arctic and boreal regions. This alters the infiltration, flow, surface and subsurface distribution, and hydrologic connectivity
Michelle A. Walvoord, Robert G. Striegl
doaj   +1 more source

Beaded streams of Arctic permafrost landscapes [PDF]

, 2014
Abstract. Beaded streams are widespread in permafrost regions and are considered a common thermokarst landform. However, little is known about their distribution, how and under what conditions they form, and how their intriguing morphology translates to ecosystem functions and habitat. Here we report on a Circum-Arctic inventory of beaded streams and a
C. D. Arp, M. S. Whitman, B. M. Jones, G. Grosse, B. V. Gaglioti, K. C. Heim   +5 more
openaire   +1 more source

Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach [PDF]

The Cryosphere, 2016
Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release,
W. L. Cable, V. E. Romanovsky, V. E. Romanovsky, M. T. Jorgenson   +3 more
doaj   +1 more source

Mapping Mountain Permafrost Landscapes in Siberia Using Landsat Thermal Imagery

Geosciences, 2018
Intensive development of South Yakutia, a mountainous area in the Russian sporadic permafrost zone, must be founded on knowledge about regional permafrost conditions. New permafrost maps for mountainous areas in South Yakutia (the Elkon Mountains and the
Svetlana V. Kalinicheva, Alexander N. Fedorov, Mikhail N. Zhelezniak   +2 more
doaj   +1 more source

Recent peat and carbon accumulation on changing permafrost landforms along the Mackenzie River valley, Northwest Territories, Canada

Environmental Research Letters, 2023
Northwestern Canada is currently warming nearly four times faster than the global average, driving accelerated permafrost thaw and changes to ecosystem vegetation, hydrology and landscape structure across the landscape.
Pénélope Germain Chartrand, Oliver Sonnentag, Nicole K Sanderson, Michelle Garneau   +3 more
doaj   +1 more source

Estimating lichen biomass in forests and peatlands of northwestern Canada in a changing climate

Arctic, Antarctic, and Alpine Research, 2022
Climate warming in the North could lead to lichen decline within critical woodland caribou habitat. We used repeat measurements of sixty-nine plots over ten years (2007–2008 and 2017–2018) to assess lichen biomass changes under a warming climate along a ...
Ruth Catherine Errington, S. Ellen Macdonald, Natalka A. Melnycky, Jagtar S. Bhatti   +3 more
doaj   +1 more source

Assessment of the natural conditions of the territory of the Anabar region on a landscape basis [PDF]

E3S Web of Conferences
The article assesses the natural conditions of the territory of the Anabar region of the Sakha Republic on a permafrost-landscape basis for accounting by subsoil users and other economic entities in order to preserve biodiversity and develop reindeer ...
Efremova Inga
doaj   +1 more source

Isotropic thaw subsidence in undisturbed permafrost landscapes [PDF]

Geophysical Research Letters, 2013
AbstractObservations in undisturbed terrain within some regions of the Arctic reveal limited correlation between increasing air temperature and the thickness of the seasonally thawed layer above ice‐rich permafrost. Here we describe landscape‐scale, thaw‐induced subsidence lacking the topographic contrasts associated with thermokarst terrain.
Nikolay I. Shiklomanov, Dmitry A. Streletskiy, Jonathon D. Little, Frederick E. Nelson   +3 more
openaire   +1 more source

Ground ice, organic carbon and soluble cations in tundra permafrost soils and sediments near a Laurentide ice divide in the Slave Geological Province, Northwest Territories, Canada [PDF]

The Cryosphere, 2020
The central Slave Geological Province is situated 450–650 km from the presumed spreading centre of the Keewatin Dome of the Laurentide Ice Sheet, and it differs from the western Canadian Arctic, where recent thaw-induced landscape changes in ...
R. Subedi, S. V. Kokelj, S. V. Kokelj, S. Gruber   +3 more
doaj   +1 more source

SPATIAL STRUCTURE OF THE PERMAFROST LANDSCAPES OF YAKUTIA: GEOINFORMATIONAL MODELING (ON THE EXAMPLE OF MIDDLE TAIGA AND MOUNTAIN PERMAFROST LANDSCAPES

, 2021
Решение многих вопросов рационального землепользования основано на информации о состоянии ландшафтных комплексов. Возможности получения достоверной информации о пространственной структуре мерзлотных ландшафтов становятся особенно актуальными для оценки состояния и тенденций развития.
openaire   +2 more sources