7.31 Hillslope Processes in Cold Environments: An Illustration of High-Latitude Mountain and Hillslope Processes and Forms

Goodfellow, Bradley W.; Boelhouwers, Jan

doi:10.1016/b978-0-12-374739-6.00181-0

Cited by 16 publications

(14 citation statements)

References 96 publications

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“…Interestingly, the slope angle and vegetation were weak variables in discriminating between the active and inactive sites, whereas they were the most important variables in modelling the distribution of active sites. Although slope angle is one of the key factors for solifluction (French, ; Goodfellow and Boelhouwers, ), inactive features occurred in the same slope conditions as active ones but at lower altitudes in the study area. One would expect that vegetation abundance would be a strong negative factor in the determination of solifluction activity.…”

Section: Discussionmentioning

confidence: 91%

“…Increasing soil moisture could promote cryoturbation and solifluction activity, but thicker snow accumulations would have the opposite effect in most sites (cf. Daanen et al , ; Ridefelt et al , ; Goodfellow and Boelhouwers, ).…”

Section: Discussionmentioning

confidence: 99%

“…The environmental determinants of cryoturbation and solifluction have been intensively studied at different scales (Goodfellow and Boelhouwers, ). But because of the multivariate and complex nature of process‐environment relationships, gaps in knowledge exist (Warburton, ), especially at the landscape scale (Berthling et al , ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Which Environmental Factors Determine Recent Cryoturbation and Solifluction Activity in a Subarctic Landscape? A Comparison between Active and Inactive Features

Hjort

2014

Permafrost and Periglac. Process.

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Environmental factors that affect the activity-inactivity variation of periglacial features may differ from those factors that control the distributional patterns of active features. To explore this potential difference, a statistically based modelling approach and comprehensive data on active and inactive cryoturbation and solifluction features from a subarctic area of Finnish Lapland are investigated at a landscape scale. In the cryoturbation modelling, vegetation abundance is the most important environmental variable explaining both the activity-inactivity variation and the distribution of active sites. The next most important variables are soil moisture and (micro)climatological conditions in the activity modelling, and slope angle and ground material in the distribution modelling. For solifluction, the key variables determining the activity-inactivity variation are mean annual air temperature and mean maximum snow depth, whereas vegetation abundance and slope angle control the distribution of active sites. Comparison between the environmental conditions of active and inactive periglacial features may provide new insights into activityenvironment relationships, which in turn are valuable when the effects of climate change on periglacial processes are explored.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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Which Environmental Factors Determine Recent Cryoturbation and Solifluction Activity in a Subarctic Landscape? A Comparison between Active and Inactive Features

Hjort

2014

Permafrost and Periglac. Process.

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“…The lack of a trend between δ 7 Li and relief in the Lena River catchment may be due to cryogenic weathering processes prevalent in regions of continuous permafrost e.g., the continual supply of fresh primary minerals due to seasonal freeze/thaw cycles, frost shattering and salt weathering (Woo, 2012), none of which are directly relatived to relief (Goodfellow and Boelhouwers, 2013). Weathering rates can also be enhanced over predicted 'inorganic' weathering rates by organic acid weathering (Huh, 2003), and could also be a factor here.…”

Section: Topographical and Catchment Area Controls On LI Isotope Fracmentioning

confidence: 99%

“…South-facing slopes in permafrost regions are typically characterised by increased summer insolation and higher daily temperatures which contribute to more rapid thawing of snow cover, warmer soils, greater active layer depth and hence greater infiltration of melt water (Woo, 2012;Hindshaw et al, 2018). Repeated freezing and thawing due to earlier snow melt can destabilise the soil cover, such that south-facing slopes are typically prone to greater hillslope instability (Vasiliev, 2009;Goodfellow and Boelhouwers, 2013). This may contribute towards local variations in water flow and hence different water-rock interaction times.…”

Section: Permafrost and Climatic Controls On LI Isotope Variationsmentioning

confidence: 99%

Tracing silicate weathering processes in the permafrost-dominated Lena River watershed using lithium isotopes

Murphy

Porcelli

Strandmann

et al. 2019

Geochimica et Cosmochimica Acta

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Forecasting the response of Earth's surface to future climatic and land use changes: A review of methods and research needs

et al. 2015

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In the future, Earth will be warmer, precipitation events will be more extreme, global mean sea level will rise, and many arid and semiarid regions will be drier. Human modifications of landscapes will also occur at an accelerated rate as developed areas increase in size and population density. We now have gridded global forecasts, being continually improved, of the climatic and land use changes (C&LUC) that are likely to occur in the coming decades. However, besides a few exceptions, consensus forecasts do not exist for how these C&LUC will likely impact Earth-surface processes and hazards. In some cases, we have the tools to forecast the geomorphic responses to likely future C&LUC. Fully exploiting these models and utilizing these tools will require close collaboration among Earth-surface scientists and Earth-system modelers. This paper assesses the state-of-the-art tools and data that are being used or could be used to forecast changes in the state of Earth's surface as a result of likely future C&LUC. We also propose strategies for filling key knowledge gaps, emphasizing where additional basic research and/or collaboration across disciplines are necessary. The main body of the paper addresses cross-cutting issues, including the importance of nonlinear/threshold-dominated interactions among topography, vegetation, and sediment transport, as well as the importance of alternate stable states and extreme, rare events for understanding and forecasting Earth-surface response to C&LUC. Five supplements delve into different scales or process zones (global-scale assessments and fluvial, aeolian, glacial/periglacial, and coastal process zones) in detail.

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7.31 Hillslope Processes in Cold Environments: An Illustration of High-Latitude Mountain and Hillslope Processes and Forms

Cited by 16 publications

References 96 publications

Which Environmental Factors Determine Recent Cryoturbation and Solifluction Activity in a Subarctic Landscape? A Comparison between Active and Inactive Features

Which Environmental Factors Determine Recent Cryoturbation and Solifluction Activity in a Subarctic Landscape? A Comparison between Active and Inactive Features

Tracing silicate weathering processes in the permafrost-dominated Lena River watershed using lithium isotopes

Forecasting the response of Earth's surface to future climatic and land use changes: A review of methods and research needs

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