Results 41 to 50 of about 2,197 (157)

Arctic Landscapes in Transition: Responses to Thawing Permafrost [PDF]

Eos, Transactions American Geophysical Union, 2010
Observations indicate that over the past several decades, geomorphic processes in the Arctic have been changing or intensifying. Coastal erosion, which currently supplies most of the sediment and carbon to the Arctic Ocean [Rachold et al., 2000], may have doubled since 1955 [Mars and Houseknecht, 2007].
J. C. Rowland, C. E. Jones, G. Altmann, R. Bryan, B. T. Crosby, L. D. Hinzman, D. L. Kane, D. M. Lawrence, A. Mancino, P. Marsh, J. P. McNamara, V. E. Romanvosky, H. Toniolo, B. J. Travis, E. Trochim, C. J. Wilson, G. L. Geernaert   +16 more
openaire   +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

Rapid Saline Permafrost Thaw Below a Shallow Thermokarst Lake in Arctic Alaska

Geophysical Research Letters, 2023
Permafrost warming and degradation is well documented across the Arctic. However, observation‐ and model‐based studies typically consider thaw to occur at 0°C, neglecting the widespread occurrence of saline permafrost in coastal plain regions.
Benjamin M. Jones, Mikhail Z. Kanevskiy, Andrew D. Parsekian, Helena Bergstedt, Melissa K. Ward Jones, Rodrigo C. Rangel, Kenneth M. Hinkel, Yuri Shur   +7 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

Spatial controls of methane uptake in upland soils across climatic and geological regions in Greenland

Communications Earth & Environment, 2023
In the Arctic, the spatiotemporal variation of net methane uptake in upland soils depends on unresolved interactive controls between edaphic and microbial factors not yet included in current models, underpinning the uncertainty of upscaling the Arctic ...
Ludovica D’Imperio, Bing-Bing Li, James M. Tiedje, Youmi Oh, Jesper Riis Christiansen, Sebastian Kepfer-Rojas, Andreas Westergaard-Nielsen, Kristian Koefoed Brandt, Peter E. Holm, Peiyan Wang, Per Ambus, Bo Elberling   +11 more
doaj   +1 more source

Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands

Environmental Research Letters, 2018
The Western Siberian Lowlands (WSL) store large quantities of organic carbon that will be exposed and mobilized by the thawing of permafrost. The fate of mobilized carbon, however, is not well understood, partly because of inadequate knowledge of ...
P Ala-aho, C Soulsby, O S Pokrovsky, S N Kirpotin, J Karlsson, S Serikova, R Manasypov, A Lim, I Krickov, L G Kolesnichenko, H Laudon, D Tetzlaff   +11 more
doaj   +1 more source

Landscape fragmentation associated with the Qingzang Highway and its influencing factors—A comparison study on road sections and buffers

Geography and Sustainability, 2021
Many studies have examined the effect of roads on landscape fragmentation. Yet they rarely considered local characteristics of the road and road buffer widths.
Yi Miao, Teqi Dai, Xingdou Yang, Jinping Song   +3 more
doaj   +1 more source

The role of changing temperature in microbial metabolic processes during permafrost thaw.

PLoS ONE, 2020
Approximately one fourth of the Earth's Northern Hemisphere is underlain by permafrost, earth materials (soil, organic matter, or bedrock), that has been continuously frozen for at least two consecutive years.
Komi S Messan, Robert M Jones, Stacey J Doherty, Karen Foley, Thomas A Douglas, Robyn A Barbato   +5 more
doaj   +1 more source