Results 41 to 50 of about 25,716 (256)

Permafrost degradation risk zone assessment using simulation models [PDF]

The Cryosphere, 2011
Abstract. In this proof-of-concept study we focus on linking large scale climate and permafrost simulations to small scale engineering projects by bridging the gap between climate and permafrost sciences on the one hand and on the other technical recommendation for adaptation of planned infrastructures to climate change in a region generally underlain ...
Daanen, R.P., Ingeman-Nielsen, Thomas, Marchenko, S., Romanovsky, V. E., Foged, Niels Nielsen, Stendel, M., Christensen, J. H., Hornbech Svendsen, K.   +7 more
openaire   +4 more sources

Permafrost hydrology in changing climatic conditions: seasonal variability of stable isotope composition in rivers in discontinuous permafrost [PDF]

, 2015
Role of changing climatic conditions on permafrost degradation and hydrology was investigated in the transition zone between the tundra and forest ecotones at the boundary of continuous and discontinuous permafrost of the lower Yenisei River.
Nyland, Kelsey E., Opel, Thomas, Shiklomanov, Alexander I., Shiklomanov, Nikolay I., Streletskaya, Irina D., Streletskiy, Dmitry A., Tananaev, Nikita I., Tokarev, Igor   +7 more
core   +1 more source

Metabologenomic Hallmark‐Based Discovery of Bacterial Thioamides as a New Lead against Drug‐Resistant Pancreatic Cancer

Advanced Science, EarlyView.
A targeted metabologenomic strategy integrating genomic and metabolomic hallmarks enabled the discovery of two new thioamides, thiogochangamides A and B, from bacteria. Their absolute configurations, previously unresolved within the thioviridamide family, were fully assigned through various chemical derivatizations and computational analysis ...
Young Eun Du, Eun Seo Bae, Thinh T. M. Bui, Seok Beom Lee, Dahan Kim, Jin‐Gyeong Park, Yongjoo Park, Soo Yeon Park, Sangwook Kang, Beomsu Lee, Daniel Shin, Yun Pyo Kang, In‐Gyun Lee, Dae‐Duk Kim, Seokhee Kim, Suckchang Hong, Kyuho Moon, Sang Kook Lee, Dong‐Chan Oh   +18 more
wiley   +1 more source

The influence of climate and hydrological variables on opposite anomaly in active-layer thickness between Eurasian and North American watersheds [PDF]

, 2013
This study not only examined the spatiotemporal variations of active-layer thickness (ALT) in permafrost regions during 1948-2006 over the terrestrial Arctic regions experiencing climate changes, but also identified the associated drivers based on ...
FEDOROV, Alexander, FEDOROV, Alexander, IIJIMA, Yoshihiro, OHATA, Tetsuo, PARK, Hotaek, SHERSTIUKOV, Artem, SHERSTIUKOV, Artem, WALSH, John, WALSH, John, 大畑, 哲夫, 朴, 昊澤, 飯島, 慈裕   +11 more
core   +2 more sources

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Quaternary Permafrost in China: Framework and Discussions

Quaternary, 2020
The framework of Quaternary permafrost in China was reconstructed for the first time on the basis of available periglacial, glacial, and other proxies. During the Early Pleistocene (2.68–0.80 Ma BP), permafrost advanced southwards to 47–50° N in northern
Huijun Jin, Jef Vandenberghe, Dongliang Luo, Stuart A. Harris, Ruixia He, Xuemei Chen, Xiaoying Jin, Qingfeng Wang, Ze Zhang, Valentin Spektor, Qingbai Wu, Shaoling Wang   +11 more
doaj   +1 more source

Numerical modeling of two-dimensional temperature dynamics across ice-wedge polygons [PDF]

, 2017
Thesis (M.S.) University of Alaska Fairbanks, 2017The ice wedges on the North Slope of Alaska have been forming for many millennia, when the ground cracked and the cracks were filled with snowmelt water.
Garayshin, Viacheslav Valer'evich, Гарайшин, Вячеслав Валерьевич   +1 more
core  

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Warming‒wetting and continentality co-modulate the effect of desertification on permafrost degradation on the Qinghai‒Xizang Plateau

Advances in Climate Change Research
Permafrost degradation and desertification have been identified as two major land surface processes occurring on the Qinghai‒Xizang Plateau. However, the effect of desertification on permafrost degradation remains poorly understood.
Lu-Yang Wang, Qing-Bai Wu, Dong-Liang Luo, Guan-Li Jiang, Wen-Xin Zhang, Zi-Teng Fu, Xiao-Ming Xu, Si-Ru Gao, Wen-Yan Du   +8 more
doaj   +1 more source

Permafrost degradation, subarctic Canadian Shield

, 2019
Recent ground temperature and observational data for lithalsas in the subarctic Canadian Shield (permafrost mounds of ice-rich, fine-grained sediments) are examined in the context of an inventory of thermokarst ponding between 1945 and 2005. Results show that many lithalsas are thermally and physically degrading, and widespread thermokarst primarily ...
P D Morse, S A Wolfe, T L McWade, S V Kokelj   +3 more
openaire   +1 more source