Active layer
Warming permafrost and active layer variability at Cime Bianche, Western Alps
... Mutter and Phillips (2012) deeply analyzed similar behaviors on a sample of 10 bore- holes in Switzerland observing that, on average, the duration of the spring zero-curtain is usually shorter than the autumn one and is ...
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The Global Terrestrial Network for Permafrost Database: metadata statistics and prospective analysis on future permafrost temperature and active layer depth monitoring site distribution
... equal-angle projections and (ii) the frequencies of slope aspects as rose diagrams with a bin size of 30 ◦ . A comparison between the original metadata and the DEM-derived values shows major differences in the CALM ...
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Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region
... the active layer thermal regime under significantly different snow conditions on James Ross Island, the active layer was found thicker ...
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Growing season methane emission from a boreal peatland in the continuous permafrost zone of Northeast China: effects of active layer depth and vegetation
... of active layer and groundwater level were measured at the same time as gas ...China). Active layer depth was simultaneously mea- sured by a steel ...
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Permafrost temperature and active-layer thickness of Yakutia with 0.5 degree spatial resolution for model evaluation
... parison with results from land surface models which represent heat conduction and phase change. The gridded datasets can be accessed at the PANGAEA repository (doi:10.1594/PANGAEA.808240). In general, there is a strong ...
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Control of a White Organic Light Emitting Diode’s emission parameters using a single doped RGB active layer
... for the device in figure 24a with threshold voltage of around 11 V. Inset shows the EL spectra for a cool white emission with a low emission from DCM1 which may be the result of a low material evaporation. Increasing ...
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Monitoring of active layer dynamics at a permafrost site on Svalbard using multi-channel ground-penetrating radar
... Multi-channel GPR has been capable to deliver the evolu- tion of the thaw depth and the average soil water content be- tween the surface and the freeze-thaw interface for a period of five weeks. For the conditions ...
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Detailed detection of active layer freeze–thaw dynamics using quasi-continuous electrical resistivity tomography (Deception Island, Antarctica)
... an active vol- cano and is formed by intercalation of lava flows, pyroclastic and ash deposits, with many of the present-day glaciers being ...The active layer is thin, varying from 30 to 96 cm depth ...
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Thermal state of the active layer and permafrost along the Qinghai-Xizang (Tibet) railway from 2006 to 2010
... these sites are relatively shallow, usually about 6 to 8 m in depth. A new permafrost monitoring network was established in 2005 along the Qinghai-Xizang (Tibet) Railway with 28 sites and borehole depth is greater than ...
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Development and characterization of gas sensors using thin films of polyaniline as active layer
... This work aimed at the development and characterization of gas sensing devices using thin films of polyaniline (PAni) as active layer, deposited by in situ polymerization. The polyaniline, an intrinsically ...
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Active layer dynamics in three topographically distinct lake catchments in Byers Peninsula (Livingston Island, Antarctica)
... We monitored ground and near-surface air temperatures in three distinct geomorphological and topographical sites over the period 2007 –11. No widespread permafrost conditions were detected in the Forcadona area. In the ...
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Application of oxide nanoparticles obtained by proteic solgel and mechanical alloying in third generation solar cells
... the active layer can have an effect on the film morphology, the donor-acceptor intermixing scales, and the degree of crystallinity as well as crystal orientation, which in the end has an impact on the ...
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Polímeros de coordenação à base de cobalto(II) e N,N'-bis(4-piridil)-1,4,5,8-naftaleno...
... blocking layer, PLEDs using a conventional three layer structure (hole-transport layer (HTL)/active layer/electron-transport layer (ETL)) were fabricated to ascertain changes ...
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A GPR SURVEY ON DEGRADED PERMAFROST AT MESÓN SAN JUAN, MENDONZA, ARGENTINA
... gation of EM waves trapped in a surficial waveguide (Annan et al., 1975). This does not contradict the good penetration of the EM waves seen in fixed offset data (Fig. 2); there the antennae separation is 2 m, less than ...
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Rev. Bras. Geof. vol.26 número4
... We do assume here that the differences in phase velocity are due to water (liquid or ice) contents. This zoning represents a conspicuous lateral change in water contents but is not as far- fetched as it may sound, as ...
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Evaluation of the ground surface Enthalpy balance from bedrock shallow borehole temperatures (Livingston Island, Maritime Antarctic)
... and Osterkamp, 2000; Ling and Zhang, 2004). Snow has a high surface albedo and high emissivity, inducing cooling of the snow surface, while its low thermal conductivity makes it a good insulator. The ground heat flux is ...
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Small-scale variation of snow in a regional permafrost model
... Table 2. The model performance is evaluated with respect to the mean annual ground surface temperatures (MAGST) and the mean annual temperature at the depth of the active layer or seasonal freezing ...
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Specification of a partial replication protocol with TLA+
... The server of the system has three layers, the upper layer (interface layer) to receive and answer to clients requests, an intermediate layer (coordination layer) for coordination with o[r] ...
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Fabrication of in situ composite layer on cast steel
... a layer from 550 to 1200µm ...produced layer examined in function of the distance from the casting surface is from 700 to 1134 HV, and is determined by volume fraction of the reinforcing TiC ...
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The layer by layer selective laser synthesis of ruby
... engineering. The combination of high electric resistance and thermal conductivity provided its use in the production of integral circuits and substrates for chip casings. Alumina ceramics is used in nuclear power plants ...
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