Results 31 to 40 of about 82,572 (267)

Seasonal InSAR Displacements Documenting the Active Layer Freeze and Thaw Progression in Central-Western Spitsbergen, Svalbard

Remote Sensing, 2021
In permafrost areas, the active layer undergoes seasonal frost heave and thaw subsidence caused by ice formation and melting. The amplitude and timing of the ground displacement cycles depend on the climatic and ground conditions. Here we used Sentinel-1
Line Rouyet, Lin Liu, Sarah Marie Strand, Hanne Hvidtfeldt Christiansen, Tom Rune Lauknes, Yngvar Larsen   +5 more
doaj   +1 more source

Temporal and spatial variation in active layer depth in the McMurdo Sound Region, Antarctica

, 2010
A soil climate monitoring network, consisting of seven automated weather stations, was established between 1999 and 2003, ranging from Minna Bluff to Granite Harbour and from near sea level to about 1700m on the edge of the polar plateau.
Seybold, Cathy A., Adlam, Leah Seree, Balks, Megan R., Campbell, David I.   +3 more
core   +1 more source

Differential Hall Effect Metrology for Electrical Characterization of Advanced Semiconductor Layers

Metrology
Semiconductor layers employed in fabricating advanced node devices are becoming thinner and their electrical properties are diverging from those established for highly crystalline standards.
Bulent M. Basol, Abhijeet Joshi
doaj   +1 more source

Efficient bulk heterojunction photovoltaic devices based on modified PCBM

Nanotechnology Reviews, 2015
Organic bulk heterojunction solar cells are a promising candidate for low-cost next-generation photovoltaic systems. In bulk heterojunction polymer solar cells, conjugated polymers and fullerene derivatives [6,6]-phenyl-C61-butyric acid methyl ester ...
Sharma Shyam S., Sharma Khushboo, Sharma G.D.   +2 more
doaj   +1 more source

Role of permafrost degradation on evapotranspiration on the Qinghai-Tibet Plateau

Shui kexue jinzhan, 2022
The Qinghai-Tibet Plateau (QTP), known as the "Asian Water Tower", is extremely sensitive to climate change. Studying the impacts of permafrost degradation on evapotranspiration is conducive to improving the understanding of the response of hydrological ...
Fang JI, Linfeng FAN, Xingxing KUANG, Yiguang ZOU, Chunmiao ZHENG   +4 more
doaj   +1 more source

Layer 6 Corticothalamic Neurons Activate a Cortical Output Layer, Layer 5a [PDF]

The Journal of Neuroscience, 2014
Layer 6 corticothalamic neurons are thought to modulate incoming sensory information via their intracortical axons targeting the major thalamorecipient layer of the neocortex, layer 4, and via their long-range feedback projections to primary sensory thalamic nuclei.
Juhyun Kim, Chanel J. Matney, Aaron Blankenship, Shaul Hestrin, Solange P. Brown   +4 more
openaire   +2 more sources

Effectiveness of active flow control for turbulent skin friction drag reduction [PDF]

, 2011
The effectiveness of the opposition control method proposed by Choi et al. [J. Fluid Mech. 262, 75 (1994)] has been studied using direct numerical simulations.
Chung, Yongmann M., Talha, Tariq, Yongmann M. Chung, Tariq Talha   +3 more
core   +1 more source

Analysis on the influence of underlying surface conditions in permafrost regions on the key water cycle processes at slope scale

Shui kexue jinzhan, 2022
Herein, the slope-scale dynamic changes in water cycle processes such as infiltration, evapotranspiration, thermal-moisture conditions in the active layer, and suprapermafrost groundwater in response to changes in the underlying surface conditions are ...
Linmao GUO, Genxu WANG, Chunlin SONG, Yang LI, Jinlong LI   +4 more
doaj   +1 more source

A model to characterize soil moisture and organic matter profiles in the permafrost active layer in support of radar remote sensing in Alaskan Arctic tundra

Environmental Research Letters, 2022
Organic matter (OM) content and a shallow water table are two key variables that govern the physical properties of the subsurface within the active layer of arctic soils underlain by permafrost, where the majority of biogeochemical activities take place.
Kazem Bakian-Dogaheh, Richard H Chen, Yonghong Yi, John S Kimball, Mahta Moghaddam, Alireza Tabatabaeenejad   +5 more
doaj   +1 more source

Inference of the impact of wildfire on permafrost and active layer thickness in a discontinuous permafrost region using the remotely sensed active layer thickness (ReSALT) algorithm

Environmental Research Letters, 2019
The Yukon–Kuskokwim (YK) Delta is a region of discontinuous permafrost in the subarctic of southwestern Alaska. Many wildfires have occurred in the YK Delta between 1971–2015, impacting vegetation cover, surface soil moisture, and the active layer ...
Roger J Michaelides, Kevin Schaefer, Howard A Zebker, Andrew Parsekian, Lin Liu, Jingyi Chen, Susan Natali, Sarah Ludwig, Sean R Schaefer   +8 more
doaj   +1 more source