Results 11 to 20 of about 83,673 (292)

Ice Volumes in Permafrost Landscapes of Arctic Yakutia

Land, 2022
This article is devoted to the study of the distribution of ground ice volumes in the upper layers of 5–10 m permafrost in the permafrost landscapes of Arctic Yakutia.
Alexander N. Fedorov, Pavel Y. Konstantinov, Nikolay F. Vasiliev, Nikolay I. Basharin, Andrei G. Shepelev, Varvara A. Andreeva, Valerii P. Semenov, Yaroslav I. Torgovkin, Alexey R. Desyatkin, Mikhail N. Zheleznyak, Igor P. Semiletov   +10 more
doaj   +1 more source

Water tracks in the lower Lena River basin [PDF]

E3S Web of Conferences, 2020
In the permafrost regions, where water filtration zone is limited by the shallow active layer, the surface flow forms a network of hollows, called «water tracks», oriented along the slope gradient.
Tarbeeva Anna, Lebedeva Lyudmila, Efremov Vladimir, Shamov Vladimir, Makarieva Olga   +4 more
doaj   +1 more source

Divergent Responses of Bacterial Communities to Permafrost Degradation and Their Associations With Carbon Across Vertical Profiles. [PDF]

Adv Sci (Weinh)
Bacterial α‐diversity decreases, but stochasticity and community stability increase across the 15 m‐depth vertical profiles and along the degraded gradient within the active layer. The abundance and interaction of core taxa mainly control community stability in the active and permafrost layers, respectively.
Chen S, Gu Y, Bahadur A, Liu E, Wu T, Zhu X, Zou Y, Liang H, Wei P, Wu L, Wu Q, Yang P, Yu H, Yang Y.   +13 more
europepmc   +2 more sources

Influence of Climate Change on the Thermal Condition of Yakutia’s Permafrost Landscapes (Chabyda Station)

Land, 2020
This paper presents the results of 39 years of observations conducted at the Chabyda station to monitor the thermal state of permafrost landscapes under current climatic warming.
Stepan P Varlamov, Yuri B Skachkov, Pavel N Skryabin   +2 more
doaj   +1 more source

Establishment of Permafrost Thermal Monitoring Sites in East Siberia

Land, 2020
Permafrost lies close to the surface of the day, therefore, it is able to quickly respond to modern climatic changes. Under these conditions, the goal of understanding the evolution of permafrost in the near future requires monitoring studies of the ...
Pavel Konstantinov, Mikhail Zhelezniak, Nikolay Basharin, Ivan Misailov, Varvara Andreeva   +4 more
doaj   +1 more source

The influence of particle morphology on the long-term strength of sandy soil under freeze-thaw cycles

Case Studies in Construction Materials, 2023
Freeze-thaw weathering can fragment sand and gravel materials, altering their mechanical properties. This study aims to simulate the effects of freeze-thaw weathering by subjecting sand and gravel materials to cycling tests.
Qi Liu, Ze Zhang, Shengrong Zhang, Xianglong Li, Haichao Long, Xiangxi Meng, Andrey Melnikov, Leonid Gagarin   +7 more
doaj   +1 more source

Assessing effects of permafrost thaw on C fluxes based on multiyear modeling across a permafrost thaw gradient at Stordalen, Sweden [PDF]

, 2014
Northern peatlands in permafrost regions contain a large amount of organic carbon (C) in the soil. Climate warming and associated permafrost degradation are expected to have significant impacts on the C balance of these ecosystems, but the magnitude is ...
Backstrand, K, Crill, P, Deng, Jia, Frolking, Steve, Li, C, Zhang, Y   +5 more
core   +2 more sources

Permafrost-Landscape Map of the Republic of Sakha (Yakutia) on a Scale 1:1,500,000

Geosciences, 2018
The history of permafrost landscape map compilation is related to the study of ecological problems with permafrost. Permafrost-landscape studies are now widely used in geocryological mapping. Permafrost-landscape classifications and mapping are necessary
Alexander N. Fedorov, Nikolay F. Vasilyev, Yaroslav I. Torgovkin, Alena A. Shestakova, Stepan P. Varlamov, Mikhail N. Zheleznyak, Viktor V. Shepelev, Pavel Y. Konstantinov, Svetlana S. Kalinicheva, Nikolay I. Basharin, Viktor S. Makarov, Innokenty S. Ugarov, Peter V. Efremov, Radomir N. Argunov, Larisa S. Egorova, Vera V. Samsonova, Andrey G. Shepelev, Alexander I. Vasiliev, Rosaliya N. Ivanova, Alexey A. Galanin, Vasily M. Lytkin, Georgy P. Kuzmin, Viktor V. Kunitsky   +22 more
doaj   +1 more source

Heavy and Light Mineral Association of Late Quaternary Permafrost Deposits in Northeastern Siberia

Frontiers in Earth Science, 2022
We studied heavy and light mineral associations from two grain-size fractions (63–125 μm, 125–250 µm) from 18 permafrost sites in the northern Siberian Arctic in order to differentiate local versus regional source areas of permafrost aggradation on the ...
L. Schirrmeister, S. Wetterich, G. Schwamborn, H. Matthes, G. Grosse, I. Klimova, V. V. Kunitsky, C. Siegert   +7 more
doaj   +1 more source

Measurement of Excess Pore-Water Pressure in Frozen Soil at Subfreezing Temperatures Close to 0°C

Geofluids, 2022
Response of pore-water pressure has crucial effect on the engineering geological performance of permafrost ground. However, there is a dearth of literature on the measurement of pore-water pressure in frozen soils due to challenges with regard to ...
Hu Zhang, Suiqiao Yang, Huijun Jin, Mengxin Liu   +3 more
doaj   +1 more source