... it is standard practice to collect till samples from ≥1 m depth to ensure that the C-horizon has been sampled. Considerations for soil development in permafrost terrain is described in a later section. The design of a till sampling survey is governed by the size of the area to be evaluated. Samples...

...Jefferson Bustamante; Gabriel Fabien-Ouellet; Mathieu J. Duchesne; Amr Ibrahim ABSTRACT Monitoring the change in permafrost conditions and distribution is crucial for forecasting global warming. As seismic velocities increase with ice content, marine seismic surveys can map the top of ice-bearing...

...A.A. Galanin; I.V. Klimova; I.I. Khristoforov; Q. Wu; Zh. Ze Abstract —The surface pattern of permafrost area in the Tibetan Plateau, with 15–20 m polygons, resembles the patterned ground of the Arctic periglacial loess plains in northeastern Eurasia and North America. However, unlike the Arctic...

...M.N. Nikitenko; V.N. Glinskikh; I.V. Mikhaylov; A.A. Fedoseev Abstract —The study is aimed at theoretical development and scientific substantiation of a high-resolution transient electromagnetic (TEM) geophysical technique for monitoring the state of permafrost. The electromagnetic monitoring...

... focus is made on the seismic behavior of areas where seismic risk zoning is problematic because of permafrost. The paper presents synthesis of previous and new data on ground responses to large earthquakes in specific territories of the Baikal–Mongolia region with complex cryological conditions...

... failure surfaces or cause the generation of new joints that enhance hydraulic conductivity and rock mass weakening ( Evans and Clague 1994 ; Ballantyne 2002 ; McColl 2012 ). In addition, climate warming and the correlated permafrost degradation promote rock weathering, reduce the rock mass strength...

..., in subarctic northwest North America. However, new zircon U-Pb dates for the tephra suggest that the tephra was deposited ca. 207 ka during MIS 7, with wide-ranging implications for chronologies of glaciation, paleoclimate, relict permafrost, and phylogeography. We analyzed ~1900 detrital glass shards from 28...

... . Sedimentology , 49 , 805 – 833 , https://doi.org/10.1046/j.1365-3091.2002.00472.x Murton , J.B. and French , H.M. 1993 . Thermokarst involutions, Summer Island, Pleistocene Mackenzie Delta, Western Canadian Arctic . Permafrost and Periglacial Processes , 4 , 217 – 229 , https://doi.org...

...Xingmin Zhao; Jian Deng; Zhigang Wen; Zhu Rao; Li Yi; Chen Liu; Cheng Lu ABSTRACT Although conditions in the Mohe permafrost of northeastern China, including temperature, pressure, groundwater, gas migration, and host reservoirs, are favorable for gas-hydrate accumulation, no gas hydrates have been...

... are mainly due to variations in lithology, geocryology (sea ice, permafrost, and ground ice), and geomorphology, all of which are controls on the erodibility of Arctic coasts ( Solomon 2005 ). Temporal variability is mainly controlled by environmental forcing (wind, waves, sea ice, currents, and sea-level...

... of Tuktoyaktuk has for many years faced severe threats from coastal erosion and thawing permafrost, exacerbated by climate-driven change, such that present shore protection measures are not working and the shoreline continues to recede ( Fig. 2 ; Wolfe et al. 1998 ; Lamoureux et al. 2015 ). This has led...

...Ekaterina V. Garankina; Vasily A. Lobkov; Ilya G. Shorkunov; Vladimir R. Belyaev Abstract Watershed landscapes of the Central Russian Plain, which were subjected to the Late Pleistocene permafrost, bear witness to widespread cryogenic structuring. It is reflected both in semi-regular spots, blocks...

...Yuxia Zhao; Kangqi Liu; Hongyan Liu; Hanhua Xu Abstract Under the action of freeze-thaw erosion, slopes in permafrost regions frequently suffer from geological disasters. The unique properties of soil-rock-mixture slopes further complicate this freeze-thaw stability problem. To study the effects...

... during the late Pleistocene to mid-Holocene. We modeled seven slope stability scenarios for the T440 landslide by varying water table position and seismic load. Our modeling results suggest that thawing permafrost and/or seismic loading were likely possible triggers for the T440 landslide. To our...

...D.L. Forbes; M.R. Craymer; T.S. James; D. Whalen The Mackenzie Delta is an extensive river-mouth depocentre, the second largest delta on the Arctic Ocean, and lies in the zone of continuous permafrost. We report the first measurements of natural consolidation subsidence in a high-latitude delta...

...Greg A. Oldenborger; Naomi Short; Anne-Marie LeBlanc Seasonal or degradational thaw subsidence of permafrost terrain affects the landscape, hydrology, and sustainability of permafrost as an engineering substrate. We perform permafrost thaw sensitivity prediction via supervised classification...

...D. D. Eberl Abstract The Martian blueberries, first discovered by NASA’s Opportunity rover, are concretions likely formed in sediments from hydrothermal solutions resulting from bolide impact into groundwater or permafrost. Evidence for this conclusion comes from the shapes of particle size...

... as determining the thickness of loose deposits, tracing buried valleys, obtaining the thickness and sometimes lithological types of loose deposits, and identifying talik zones and permafrost boundaries. The document given in ( Budilin et al., 1992 ) regulates the use of vertical electrical sounding (VES...

... the ambient wavefield of the region and to investigate permafrost dynamics through estimates of seismic velocity variations. We are motivated by a need for early geophysical detection of potentially hazardous changes to permafrost stability. We draw upon several data sources to constrain various aspects...