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tundra

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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 30 January 2025
Lithosphere (2025) 2025 (1): lithosphere_2024_215.
...Kwansoo Kim; Hyeontae Ju; Junhwa Chi; Ji Young Jung; Sungjin Nam; Sang-Jong Park; Baptiste Dafflon; Joohan Lee; Won-Ki Kim Abstract In this study, we analyzed the effects of snow cover changes caused by snow fences (SFs) installed in 2017 in the Alaskan tundra to examine ground subsidence. Digital...
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First thumbnail for: Determination of Ground Subsidence Around Snow Fen...
Second thumbnail for: Determination of Ground Subsidence Around Snow Fen...
Third thumbnail for: Determination of Ground Subsidence Around Snow Fen...
Series: GSA Special Papers
Published: 07 April 2021
DOI: 10.1130/2020.2548(06)
EISBN: 9780813795485
... of this time, the vegetation was a parkland, composed of meadows of grasses and sedges with patches of coniferous forest. Tundra occurred on three different occasions; two of these were toward the end of the record in marine isotope stage (MIS) 2. Heusser estimated that a mean July temperature of 10–11.5 °C...
Journal Article
Published: 01 July 2019
Russ. Geol. Geophys. (2019) 60 (7): 768–780.
... was covered with shrub tundra vegetation. © 2019, V.S. Sobolev IGM, Siberian Branch of the RAS 2019 V.S. Sobolev IGM, Siberian Branch of the RAS Moisture content. Particle size distribution. Mineralogy. Ninety four core samples of permafrost were analyzed for total moisture content and percentages...
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First thumbnail for: A Borehole Record of Late Quaternary Permafrost on...
Second thumbnail for: A Borehole Record of Late Quaternary Permafrost on...
Third thumbnail for: A Borehole Record of Late Quaternary Permafrost on...
Journal Article
Published: 14 September 2018
Geochemistry: Exploration, Environment, Analysis (2019) 19 (2): 138–145.
... subclass, stony barren (golets)-tundra type zonality, where the lower belt is represented by tundra raw-humus soils, which are replaced in areas with higher altitude by mountain primitive stony soils and stony placers ( Urusevskaya 2007 ). In the whole range of heights (100–400 m above sea level...
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First thumbnail for: A study of trace elements in plants of the Polar U...
Journal Article
Published: 01 February 2016
Vadose Zone Journal (2016) 15 (2): vzj2015.05.0068.
... equivalent analogs that can be used in uncertainty and sensitivity analyses. We apply the technique to four polygonal tundra sites near Barrow, Alaska that are part of the Department of Energy’s Next-Generation Ecosystem Experiments (NGEE)–Arctic project. The ROM is trained for each site using simulated soil...
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First thumbnail for: A Hybrid Reduced-Order Model of Fine-Resolution Hy...
Second thumbnail for: A Hybrid Reduced-Order Model of Fine-Resolution Hy...
Third thumbnail for: A Hybrid Reduced-Order Model of Fine-Resolution Hy...
Journal Article
Journal: Geophysics
Published: 21 January 2016
Geophysics (2016) 81 (1): WA247–WA263.
... and high-resolution examination of the distribution and nature of shallow permafrost in the Arctic tundra, including the estimation of ice content, porosity, and salinity. Among other results, porosity in the top 2 m varied between 85% (besides ice wedges) and 40%, and was negatively correlated with fluid...
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First thumbnail for: Geophysical estimation of shallow permafrost distr...
Second thumbnail for: Geophysical estimation of shallow permafrost distr...
Third thumbnail for: Geophysical estimation of shallow permafrost distr...
Journal Article
Published: 03 July 2013
Canadian Journal of Earth Sciences (2013) 50 (9): 967–977.
... tundra areas may be drying, which, if true, may have important implications for carbon balance. Our observations may be the result of changes in winter conditions in combination with low permafrost ice content in the region, in part explaining regional variations in responses to climate change...
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First thumbnail for: Contrasting changes in surface waters and barrens ...
Second thumbnail for: Contrasting changes in surface waters and barrens ...
Third thumbnail for: Contrasting changes in surface waters and barrens ...
Journal Article
Published: 01 February 2013
Vadose Zone Journal (2013) 12 (1): vzj2012.0058.
... control catchments of similar vegetative cover (C1, C2). The surface area of the experimental catchments were 3.1 and 1.2 ha for C1 and C2, respectively, and 0.4 and 3.2 ha for A1 and A2, respectively. Tundra vegetation at CBAWO is heterogeneous and varies by drainage conditions and landscape position...
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First thumbnail for: The Impact of Snow Accumulation on the Active Laye...
Second thumbnail for: The Impact of Snow Accumulation on the Active Laye...
Third thumbnail for: The Impact of Snow Accumulation on the Active Laye...
Journal Article
Published: 30 March 2012
Canadian Journal of Earth Sciences (2012) 49 (8): 877–894.
...M.J. Palmer; C.R. Burn; S.V. Kokelj Abstract Air and near-surface ground temperatures, late-winter snow conditions, and characteristics of the vegetation cover and soil were measured across the forest–tundra transition in the uplands east of the Mackenzie Delta, Northwest Territories, in 2004–2010...
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First thumbnail for: Factors influencing permafrost temperatures across...
Second thumbnail for: Factors influencing permafrost temperatures across...
Third thumbnail for: Factors influencing permafrost temperatures across...
Journal Article
Published: 01 April 2011
Russ. Geol. Geophys. (2011) 52 (4): 458–465.
... into types following the classification proposed by Tarasov et al. (2007) . Then, the dynamics of forest, tundra, and steppe types of vegetation was used for the additional description of environmental and climatic changes responsible for the predominance of this vegetation in the Kotokel’ basin ( Fig. 3...
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First thumbnail for: Palynological study of Lake Kotokel’ bottom sedime...
Second thumbnail for: Palynological study of Lake Kotokel’ bottom sedime...
Third thumbnail for: Palynological study of Lake Kotokel’ bottom sedime...
Journal Article
Journal: The Leading Edge
Published: 01 August 2009
The Leading Edge (2009) 28 (8): 936–942.
...) declares “the tundra open to off-road travel.” This means that along the coastal region, the snow cover must meet the 15-cm rule (6 inches) and the ground must be frozen so permitted vehicles can operate without significantly damaging the tundra. In recent years, the tundra has opened as early as 12...
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First thumbnail for: Seismic in arctic environs : Meeting the challenge
Second thumbnail for: Seismic in arctic environs : Meeting the challenge
Third thumbnail for: Seismic in arctic environs : Meeting the challenge
Journal Article
Published: 15 January 2009
Canadian Journal of Earth Sciences (2008) 45 (11): 1221–1234.
... air temperature and sunshine during the growing season (June–July–August–September) were reconstructed from pollen assemblages using the modern analogue technique. The vegetation of the Last Interglacial period evolved from a prostrate dwarf-shrub tundra to a low- and high-shrub tundra vegetation...
Journal Article
Journal: Geology
Published: 01 July 2008
Geology (2008) 36 (7): 567–570.
... in the same mine. The unique combination of clays, oil, and brine into which the animals had sunk is responsible for their almost perfect preservation. During the late Pleistocene winters, when the ice and snow cover was present in the tundra “paleoswamp,” areas of inflow of brines, oils, and hydrocarbon...
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First thumbnail for: Unique Quaternary environment for discoveries of w...
Second thumbnail for: Unique Quaternary environment for discoveries of w...
Third thumbnail for: Unique Quaternary environment for discoveries of w...
Journal Article
Published: 07 November 2007
Canadian Journal of Earth Sciences (2007) 44 (11): 1503–1515.
... ridge–trough sequences. At spruce forest sites, near-surface ground cooling rates and minimum near-surface temperatures from the years 2003–2005 were above ice-wedge cracking thresholds. Ground thermal conditions associated with cracking were recorded at a tundra peatland with active ice wedges. Annual...
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First thumbnail for: Cessation of ice-wedge development during the 20th...
Second thumbnail for: Cessation of ice-wedge development during the 20th...
Third thumbnail for: Cessation of ice-wedge development during the 20th...
Journal Article
Published: 01 November 2007
Vadose Zone Journal (2007) 6 (4): 694–704.
...Ronald P. Daanen; Debasmita Misra; Howard Epstein Abstract Patterned-ground features are common throughout arctic tundra ecosystems and develop as a result of intricate relationships among climate, hydrology, vegetation, and soil processes. Changes in the annual energy budget induced by climatic...
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First thumbnail for: Active-Layer Hydrology in Nonsorted Circle Ecosyst...
Second thumbnail for: Active-Layer Hydrology in Nonsorted Circle Ecosyst...
Third thumbnail for: Active-Layer Hydrology in Nonsorted Circle Ecosyst...
Journal Article
Published: 11 July 2007
Canadian Journal of Earth Sciences (2007) 44 (6): 733–743.
...Ming-ko Woo; Michael Mollinga; Sharon L. Smith Abstract The variability of maximum active layer thickness in boreal and tundra environments has important implications for hydrological processes, terrestrial and aquatic ecosystems, and the integrity of northern infrastructure. For most planning...
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First thumbnail for: Climate warming and active layer thaw in the borea...
Second thumbnail for: Climate warming and active layer thaw in the borea...
Third thumbnail for: Climate warming and active layer thaw in the borea...
Journal Article
Published: 01 May 2007
Geochemistry: Exploration, Environment, Analysis (2007) 7 (2): 98.
... by the Association of Applied Geochemists, was attended by over 200 delegates from 19 countries. Its theme, ‘ From Tropics to Tundra’ , aimed to cater for presenters and registrants from a wide variety of geographical and geological environments and to embrace a range of topics in applied geochemistry. It attracted...
Journal Article
Published: 20 April 2007
Canadian Journal of Earth Sciences (2007) 44 (3): 287–296.
... indicated by the taxa range from boreal forest to tundra; taxa are an in situ assemblage with little transport or reworking. Although this site has yielded the richest fossil record of this age yet found in Ontario, previous finds at a few sites on the north edge of the eastern Erie basin...
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First thumbnail for: A diverse late-glacial (Mackinaw Phase) biota from...
Second thumbnail for: A diverse late-glacial (Mackinaw Phase) biota from...
Third thumbnail for: A diverse late-glacial (Mackinaw Phase) biota from...
Journal Article
Published: 01 March 2007
Journal of the Geological Society (2007) 164 (2): 317–322.
... fossil plants that, along with evidence from fossil insects, invertebrates and palaeosols, indicate the existence of tundra conditions at 85°S during the Neogene. Mean annual temperatures of c . −12 °C are estimated, with short summer seasons with temperatures up to +5 °C. The current published date...
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First thumbnail for: <span class="search-highlight">Tundra</span> envir...
Second thumbnail for: <span class="search-highlight">Tundra</span> envir...
Third thumbnail for: <span class="search-highlight">Tundra</span> envir...
Published: 01 January 2006
DOI: 10.1130/2006.2399(14)
... sediment deposition occurred between ∼13,000 and 12,220 yr B.P. during a period of tundra vegetation, which ended with a sharp rise in spruce needle abundance and a shift to autochthonous marl and finally peat deposition. Fossils of aquatic and wetland plants began to accumulate before the tundra-spruce...