Results 31 to 40 of about 25,716 (256)

Strengthening effect of crushed rock revetment and thermosyphons in a traditional embankment in permafrost regions under warming climate

Advances in Climate Change Research, 2021
The embankment of the Qinghai–Tibet Railway (QTR) has been experiencing severe problems due to permafrost degradation, especially in warm and ice-rich permafrost regions.
Qi-Hang Mei, Ji Chen, Jin-Chang Wang, Xin Hou, Jing-Yi Zhao, Shou-Hong Zhang, Hai-Ming Dang, Jia-Wei Gao   +7 more
doaj   +1 more source

Modeling Wildfire-Induced Permafrost Deformation in an Alaskan Boreal Forest Using InSAR Observations

Remote Sensing, 2018
The discontinuous permafrost zone is one of the world’s most sensitive areas to climate change. Alaskan boreal forest is underlain by discontinuous permafrost, and wildfires are one of the most influential agents negatively impacting the condition of ...
Yusuf Eshqi Molan, Jin-Woo Kim, Zhong Lu, Bruce Wylie, Zhiliang Zhu   +4 more
doaj   +1 more source

Experimental and Numerical Analyses of the Thermal Regime of a Traditional Embankment in Permafrost Regions

Advances in Materials Science and Engineering, 2021
Traditional embankment is widely used in the permafrost regions along the Qinghai-Tibet Railway (QTR) because of its simple construction and lower cost. However, this form of embankment has insufficient ability to resist external thermal disturbance.
Qihang Mei, Ji Chen, Shouhong Zhang, Xin Hou, Jingyi Zhao, Jinchang Wang, Haiming Dang, Guojun Liu, Guilong Wu   +8 more
doaj   +1 more source

Degradation of warm permafrost and talik formation on the Qinghai‒Tibet Plateau in 2006–2021

Advances in Climate Change Research
Permafrost is degrading globally, particularly those with low thermal stability on the Qinghai‒Tibet Plateau, owing to climate change. However, the inadequacy of direct research on permafrost degradation based on in-situ monitoring limits the prediction ...
Qi-Hang Mei, Ji Chen, You-Qian Liu, Shou-Hong Zhang, Jing-Yi Zhao, Tian-Chun Dong, Jun-Cheng Wang, Yao-Jun Zhao   +7 more
doaj   +1 more source

Soil Enzyme Activities and Their Relationships With Soil C, N, and P in Peatlands From Different Types of Permafrost Regions, Northeast China

Frontiers in Environmental Science, 2021
Peatland is a key component of terrestrial ecosystems in permafrost regions and have important effects on climate warming. Soil enzymes are involved in biogeochemical cycle of soil carbon (C), nitrogen (N) and phosphorus (P), which can be used as early ...
Chao Liu, Chao Liu, Yanyu Song, Xingfeng Dong, Xianwei Wang, Xiuyan Ma, Guangying Zhao, Shuying Zang   +7 more
doaj   +1 more source

Understanding the relative importance of vertical and horizontal flow in ice-wedge polygons [PDF]

, 2020
Ice-wedge polygons are common Arctic landforms. The future of these landforms in a warming climate depends on the bidirectional feedback between the rate of ice-wedge degradation and changes in hydrological characteristics.
Dafflon, B, Gomez-Velez, JD, Kneafsey, TJ, Newman, BD, Soom, F, Wales, NA, Wilson, CJ, Wullschleger, SD   +7 more
core  

Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]

, 2012
High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
A. Davydova, Alling, Amon, Aufdenkampe, Balcarczyk, Benner, Bertilsson, Boyer, Bro, Brown, Bélanger, Cauwet, Coble, Coble, Coble, Cory, Cory, Cory, Dittmar, E. Bulygina, Fellman, Fellman, Fellman, Finlay, Frey, Geller, Gibson, Gordeev, Guo, Hansell, Helms, Hernes, Hernes, Holmes, Holmes, Hood, Hornberger, Inamdar, Kieber, Kimble, Lafrenière, Laudon, Letscher, Lindsay, Lobbes, McGlynn, McGuire, McKnight, McKnight, Miller, Mopper, Murphy, N. Zimov, Neff, O'Donnell, Opsahl, Opsahl, Opsahl, Osburn, P. J. Mann, Peterson, R. G. M. Spencer, R. M. Holmes, Raymond, S. Davydov, S. Zimov, Sierra, Spencer, Spencer, Spencer, Spencer, Stedmon, Stedmon, Stedmon, Stedmon, Stone, Striegl, Striegl, Stubbins, Tarnocai, Tranvik, Walker, Weishaar, Wu, Zimov   +84 more
core   +1 more source

Permafrost‒vegetation controls on water availability over the Qinghai‒Tibet Plateau

Advances in Climate Change Research
Permafrost degradation substantially affects water resources within the cryosphere. It is crucial to elucidate the dynamics of water availability influenced by both permafrost degradation and climate change to fully comprehend the water cycle in cold ...
Fang Ji, Lin-Feng Fan, Shan-Shui Yuan, Xing-Xing Kuang, Liu-Jun Zhu, Jun-Liang Jin, Ying-Ying Yao, Jian-Yun Zhang, Chun-Miao Zheng   +8 more
doaj   +1 more source

Climate warming over the past half century has led to thermal degradation of permafrost on the Qinghai–Tibet Plateau [PDF]

The Cryosphere, 2018
Air temperature increases thermally degrade permafrost, which has widespread impacts on engineering design, resource development, and environmental protection in cold regions.
Y. Ran, Y. Ran, X. Li, X. Li, X. Li, G. Cheng, G. Cheng   +6 more
doaj   +1 more source

Thermal effect of thermokarst lake on the permafrost under embankment

Advances in Climate Change Research, 2021
In permafrost regions of the Qinghai-Tibet Plateau, road disaster caused by permafrost degradation cannot be ignored. As a common thermal disaster in permafrost regions, thermokarst lake has serious thermal erosion on permafrost and results in permafrost
Er-Xing Peng, Yu Sheng, Xiao-Ying Hu, Ji-Chun Wu, Wei Cao   +4 more
doaj   +1 more source