Permafrost active layer depth
The GIS-based approach for the permafrost active layer depth mapping
... The depth of the active layer is highly valuable parameter of the biochemical processes and ecosystem dynamics in changing ...thawing layer depth (active layer ...
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The influence of vegetation and soil characteristics on active-layer thickness of permafrost soils in boreal forest
... thawing permafrost soils could significantly exacerbate global warming as the active-layer deep- ens, exposing more carbon to ...maximum depth of thaw each summer (active-layer ...
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A 20-year record (1998–2017) of permafrost, active layer and meteorological conditions at a high Arctic permafrost research site (Bayelva, Spitsbergen)
... snow depth around the station has been continuously monitored since 1998 with an SR50 sonic ranging sensor (Campbell Scientific ...snow depth the distance of the sensor from the ground surface was recorded ...
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Simulation of permafrost and seasonal thaw depth in the JULES land surface scheme
... of permafrost and frozen ...thaw depth or active layer thickness ...with permafrost in JULES and known permafrost dis- tribution in the Northern Hemisphere, and the model ...
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The Correlation Between Alaska’s Increasing Annual Atmospheric Temperature and Decreasing Permafrost Depth
... on permafrost degradation mainly focus on global permafrost active layer thickness ...uppermost layer of permafrost that thaws and refreezes on an annual ...in depth, they ...
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Frozen ground and snow cover monitoring in the South Shetland Islands, Antarctica: Instrumentation, effects on ground thermal behaviour and future research
... the active layer thickness and its evolution along the time (Brown et ...the active layer ...the permafrost is reached; this is based on the idea that the thawed soils allow the ...
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Effects of short-term variability of meteorological variables on soil temperature in permafrost regions
... snow depth, and the ther- mal diffusivity of lichens and ...in permafrost temperature and active-layer thickness in response to climate change will be lower (i) when taking into account future ...
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Warming permafrost and active layer variability at Cime Bianche, Western European Alps
... A deep (DP) and a shallow (SH) borehole, reaching a depth of 41 and 6 m, respectively, located at a distance of about 30 m (Fig. 1), have been drilled in 2004 with core-destruction method. Both boreholes are 127 ...
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Monitoring of active layer dynamics at a permafrost site on Svalbard using multi-channel ground-penetrating radar
... delivers depth averages of the soil water content, which can other- wise only be derived from a number of invasive “point”-like measurements, ...the active layer is a coarse estimate for the energy ...
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The influence of climate and hydrological variables on opposite anomaly in active-layer thickness between Eurasian and North American watersheds
... The preceding section focused on the validity of the sim- ulated permafrost and ALT. A more direct comparison is possible using soil temperature observed at field sites. We used data sets of the Russian Historical ...
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Characterizing permafrost active layer dynamics and sensitivity to landscape spatial heterogeneity in Alaska
... m depth; Mishra et ...m depth) following an exponentially decreasing curve (Jobbagy and Jackson, 2000; Hossain et ...soil layer as described in ...soil layer were assumed to be a weighted ...
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Modeling the thermal dynamics of the active layer at two contrasting permafrost sites on Svalbard and on the Tibetan Plateau
... The most widely applied analytical approach to soil freez- ing and thawing is based on Stefan’s model (Carslaw and Jaeger, 1959). It presumes that (i) heat is transported from the soil surface to the thawing front ...
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Potentials and pitfalls of permafrost active layer monitoring using the HVSR method: a case study in Svalbard
... thaw depth if the apparent peak is ...the active layer, seismic instru- ments have to be deployed on top of or inside the soil, which naturally leads to degrading coupling, tilt, and/or instrument ...
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Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) Railway from 2006 to 2010
... and permafrost tem- perature from 2006 to ...thaw depth in the late autumn, through linear interpo- lation of soil temperature profiles between two neighboring points above and below the 0 ◦ C isotherm at ...
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Multi-channel ground-penetrating radar to explore spatial variations in thaw depth and moisture content in the active layer of a permafrost site
... subsurface active layer parameters and meso- scale heterogeneity that is hard to obtain ...complete active layer is of relevance since it sig- nificantly influences the soil’s thermal ...
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Thermal characterization of the active layer at the Limnopolar Lake CALM-S site on Byers Peninsula (Livingston Island), Antarctica
... in depth and the thermal behavior observed on the thermograms ...sition layer or a zone-like relict transition in the ground ...the active layer thickness by me- chanical probing (de Pablo et ...
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The new database of the Global Terrestrial Network for Permafrost (GTN-P)
... of active layer depth observations were collected during the 4th International Polar Year (IPY) from March 2007 to March 2009 (Brown, ...of permafrost in high latitudes and high altitudes ...
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Comparison of algorithms and parameterisations for infiltration into organic covered permafrost soils
... controlling active layer soil water dy- namics and influencing ...and permafrost, and the rapid environ- mental change observed worldwide in these regions, a need exists to improve models to better ...
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Permafrost distribution in steep rock slopes in Norway: measurements, statistical modelling and implications for geomorphological processes
... that permafrost dynamics affect rock wall stability as much on short as on long timescales (days to ...shallower depth is responsible for fast deformation and smaller-magnitude rock detachments ...
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Vertical electrical resistivity sounding (VERS) of tundra and forest tundra soils of Yamal region
... the permafrost table is very typical (at the depth of 45-60 ...the active layer and upper location of the permafrost table are typical for his- tic soils due to lower temperature ...
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