Results 1 to 10 of about 5,861,883 (237)

Active layer thickness as a function of soil water content [PDF]

Environmental Research Letters, 2021
Active layer thickness (ALT) is a critical metric for monitoring permafrost. How soil moisture influences ALT depends on two competing hypotheses: (a) increased soil moisture increases the latent heat of fusion for thaw, resulting in shallower active ...
Leah K Clayton, Kevin Schaefer, Michael J Battaglia, Laura Bourgeau-Chavez, Jingyi Chen, Richard H Chen, Albert Chen, Kazem Bakian-Dogaheh, Sarah Grelik, Elchin Jafarov, Lin Liu, Roger John Michaelides, Mahta Moghaddam, Andrew D Parsekian, Adrian V Rocha, Sean R Schaefer, Taylor Sullivan, Alireza Tabatabaeenejad, Kang Wang, Cathy J Wilson, Howard A Zebker, Tingjun Zhang, Yuhuan Zhao   +22 more
doaj   +4 more sources

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   +3 more sources

Influences and interactions of inundation, peat, and snow on active layer thickness [PDF]

Geophysical Research Letters, 2016
Active layer thickness (ALT), the uppermost layer of soil that thaws on an annual basis, is a direct control on the amount of organic carbon potentially available for decomposition and release to the atmosphere as carbon‐rich Arctic permafrost soils thaw
Adam L. Atchley, Ethan T. Coon, Scott L. Painter, Dylan R. Harp, Cathy J. Wilson   +4 more
doaj   +3 more sources

ANALYSIS OF ACTIVE LAYER THICKNESS ON THIN LAYER SOLAR CELL PERFORMANCE

Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 2023
The main objective of this research is to fabricate double-layer hydrogenated amorphous silicon (a-Si:H) using a PECVD by varying the thickness of the active layer.
Soni Prayogi, Darminto Darminto
doaj   +2 more sources

A SPATIO-TEMPORAL FRAMEWORK FOR MODELING ACTIVE LAYER THICKNESS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The Arctic is experiencing an unprecedented rate of environmental and climate change. The active layer (the uppermost layer of soil between the atmosphere and permafrost that freezes in winter and thaws in summer) is sensitive to both climatic and ...
J. Touyz, D. A. Streletskiy, F. E. Nelson, T. V. Apanasovich   +3 more
doaj   +4 more sources

Spatial differentiation and influencing factors of active layer thickness in the Da Hinggan Ling Prefecture

Frontiers in Earth Science, 2023
Active layer thickness (ALT) of permafrost changes significantly under the combined influence of human activities and climate warming, which has a significant impact on the ecological environment, hydrology, and engineering construction in cold regions ...
Daqing Zhan, Daqing Zhan, Miao Li, Miao Li, Yang Xiao, Yang Xiao, Haoran Man, Haoran Man, Shuying Zang, Shuying Zang   +9 more
doaj   +3 more sources

Active Layer Thickness and Permafrost Area Projections for the 21st Century

Earth's Future, 2023
Permafrost warming leads to greenhouse gas release to the atmosphere, resulting in a positive feedback to climate change. Earth system models indicate that more than 80% of the near‐surface permafrost is projected to disappear by the end of this century,
Xiaoqing Peng, Tingjun Zhang, Oliver W. Frauenfeld, Cuicui Mu, Kang Wang, Xiaodong Wu, Donglin Guo, Jing Luo, Jan Hjort, Juha Aalto, Olli Karjalainen, Miska Luoto   +11 more
doaj   +5 more sources

Influence of Soil Salinization on Active Layer Thickness of Frozen Soil

Atmosphere, 2023
The climate of the Qinghai–Tibet Plateau is distinct. Given the large temperature difference between day and night, drought in perennial years, low rainfall and large evaporation volume, the frozen soil in some areas of the Qinghai–Tibet Plateau will ...
Ge Hao, Zhilong Zhang, Chencheng Guan, Guang Liu, Yufeng Hao, Ting Fu   +5 more
doaj   +2 more sources

Determination of the Thicknesses of the Active Layer and Cathode Limiting Currents in AFC

Electrochemistry Communications, 2004
Abstract A series of double-layered gas diffusion electrodes with two different electrocatalysts, i.e., Ag and pyrolyzed macrocycle mixture (PMM) were prepared in order to find out the maximum limiting current densities ( i L ) by varying the oxygen partial pressures in 6 M KOH and at 65 °C.
Yohannes Kiros, Pehr Björnbom
exaly   +3 more sources

Imaging permafrost active layer thickness under forest for climate model improvement

International Journal of Applied Earth Observations and Geoinformation, 2023
Permafrost is an important but poorly known carbon reservoir which is vulnerable to the high latitude accelerated warming. The projected thickening of its superficial seasonally thawed active layer and its induced spatial reorganization will hasten ...
F. Garestier, S. Guillaso, E.A. Zakharova, A.V. Kouraev, B. Decharme, R.V. Desyatkin, A. Desyatkin, T. Chevalier   +7 more
doaj   +1 more source