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  • Climate ; Climatic change ; Geomorphology ; Gully erosion ; Mars planet ; Patterned ground ; Periglacial landform ; Permafrost ; Remote sensing ; Thawing
  • are described : a high-latitude assemblage comprising features interpreted to be sorted clastic stripes, circles and polygons, non-sorted polygonally patterned ground, fluvial gullies, and solifluction lobes; a mid-latitude assemblage comprising gullies
  • , patterned ground, debris-covered glaciers and hillslope stripes; and an equatorial assemblage of linked basins, patterned ground, possible pingos, and channel-and-scarp features interpreted to be retrogressive thaw-slumps. Hypotheses to explain
  • 2013
  • Assessing the role of pre-fire ground preparation operations and soil water repellency in post-fire runoff and inter-rill erosion by repeated rainfall simulation experiments in Portuguese eucalypt plantations
  • This study addressed the impacts of contrasting pre-fire ground preparation operations on post-fire runoff and inter-rill erosion in 6 eucalypt plantations in north-central Portugal, with a special emphasis on the role of soil water repellency
  • in the seasonal patterns of overland flow generation. The AA. used rainfall simulations to asses post-fire runoff and inter-rill erosion. They compared different pre-fire ploughing techniques and 2 rainfall intensities. It is highlighted that runoff amounts were
  • similar as reported by others but sediment losses were low. An intensive land use and moderated fire severity could be originated in that result. A pattern between different pre-fire practices was not found.
  • 2013
  • Aeolian features ; Aeolian transport ; Atmospheric circulation ; Dune ; Earth surface processes ; Ground survey ; Model ; Sand ; Wind
  • over closely spaced transverse dune ridges. A differential deflection mechanism is presented that explains the three-dimensional pattern of lee-side airflow structure for a variety of incident flow angles. The results document the three-dimensional
  • 2013
  • Altitude ; Bioclimatology ; Climatic change ; Climatic warming ; Cryoturbation ; Freeze-thaw cycle ; Northern Sweden ; Patterned ground ; Periglacial features ; Precipitation ; Sweden
  • surface motion increased by 3 to 5 times along the precipitation gradient and was 2 to 4 times greater at intermediate elevations than at low and high elevations, a pattern reflected by vegetation assemblages. The results suggest that inferences about how
  • 2013
  • Arid area ; Desert ; Experimentation ; Model ; Numerical model ; Overland flow ; Patterned ground ; Stone polygon
  • 2013
  • Czech Republic ; Freeze-thaw cycle ; Geomorphometry ; Holocene ; Inheritated geomorphological features ; Lateglacial ; Microclimate ; Mountain ; Palaeo-environment ; Patterned ground ; Periglacial features ; Soil temperature
  • 2013
  • Ground thermal regime and permafrost distribution under a changing climate in Northern Norway
  • Since 2002, ground and ground surface temperatures have been systematically measured in the mountains of Troms and Finnmark, northern Norway. These data were used to calibrate and validate a transient heat flow model and a spatial permafrost model
  • , to address ground thermal development since the end of the Little Ice Age, as well as possible permafrost responses to anticipated future climate changes. Approximately 20 per cent of the land area is underlain by permafrost, and in Finnmark, permafrost
  • 2013
  • Ice- and soil-wedge dynamics in the Kapp Linné Area, Svalbard, investigated by two- and three-dimensional GPR and ground thermal and acceleration regimes
  • of misinterpretation and offers more reliable results. GPR investigations show that ice wedges are distributed sporadically in lower (younger) beach ridges, but not in higher (older) ones. Inter-site monitoring of ground temperature, soil moisture, slow ground
  • 2013
  • A review of ground-penetrating radar studies related to peatland stratigraphy with a case study on the determination of peat thickness in a northern boreal fen in Quebec, Canada
  • Boreal area ; Canada ; Geophysics ; Ground penetrating radar ; Peat bog ; Quebec ; Research technique ; Stratigraphy
  • This paper presents a review of recent ground-penetrating radar (GPR) applications to peatlands, particularly to determine peat stratigraphy. An example study of acquisition and comparison of peatland soil thickness of a fen-dominated watershed
  • 2013
  • Governance on the ground : a study of solid waste management in Addis Ababa, Ethiopia
  • 2013
  • Getting off the ground : on the politics of urban verticality
  • 2013
  • Bibliography ; Environmental change ; Geochemistry ; Ground ice ; Hydrogeology ; Isotope analysis ; Periglacial features ; Permafrost ; Soil water ; Water circulation
  • This paper reviews contributions to permafrost isotope geochemistry published between 2007 and 2012 and proposes future research directions. It focuses on : (1) the origin and age of ground ice; (2) geochemistry and water movement in the active
  • and isotope measurements from different components of permafrost. Such combination has yielded new insights, for example, into the water source and transfer processes that lead to the formation of ground ice, as well as groundwater movement and residence time
  • 2013
  • Alpes du Nord ; France ; Glacier ; Ground penetrating radar ; Periglacial features ; Permafrost ; Photogrammetry ; Rock glacier ; Surface temperature ; Thermal regime ; Vanoise
  • The Sachette rock glacier is an active rock glacier located between 2 660 and 2 480 m a.s.l. in the Vanoise Massif. In order to characterize its status as permafrost feature, shallow ground temperatures were monitored and the surface velocity
  • measured by photogrammetry. The rock glacier exhibits near-surface thermal regimes suggesting permafrost occurrence and also displays significant surface horizontal displacements. In order to investigate its internal structure, a ground-penetrating radar
  • 2013
  • China ; Climatic change ; Ground ice ; Heat flow ; Inheritated geomorphological features ; Loess ; Model ; Peat ; Periglacial features ; Permafrost ; Plateau ; Qinghai ; Tibet
  • closely relate to the surface conditions and soil type. In this study, the important protective effects of the peat layer and ground ice are illustrated using a one-dimensional finite difference model of heat flow. The simulation results indicate
  • that active-layer thickness of permafrost on Mahan Mountain would increase by approximately 83 per cent under current climate conditions without the protection of the peat layer and ground ice. Based on the temperature projections of general circulation models
  • 2013
  • theoretically nuanced and historically grounded conception of the intersections between critical cultural discourses and recent advances in urban ecology might provide a useful counterpoint to narrowly utilitarian approaches to urban nature.
  • 2013
  • In this paper the A. continues to ask how cities socialize in a way that allows shared experience to emerge in communities. Grounded in the sociology of knowledge shaped by German thinkers, her aim is to illustrate that specific stocks of knowledge
  • 2013
  • Concept ; Geophysics ; Geotechnics ; Ground ice ; Knowledge evaluation ; Model ; Monitoring ; Periglacial features ; Permafrost ; Quantitative analysis ; Research technique ; Soil water ; Space time
  • and radar methods) and new or resurrected methods for permafrost applications are discussed. Advances in geophysical monitoring and quantitative interpretation of geophysical survey results are presented, especially for ground ice and water content
  • 2013
  • Knowledge of the thermal state of mountain permafrost has greatly increased since 2007 with the establishment of numerous new monitoring stations around the world. Data collected at these sites have pointed to longer-term changes in ground
  • temperatures, which seem to have increased during the last two to three decades in cold permafrost, while in ground close to 0°C the near-surface ice content has restricted warming and similar trends are not apparent. Modelling of mountain permafrost has
  • 2013
  • CryoGRID 1.0 provides an equilibrium model of permafrost distribution in Norway at a spatial resolution of 1 km2. The approach was forced with gridded data on daily air temperature and snow cover. Ground thermal properties for different bedrock
  • that permafrost underlies sites mainly with exposed bedrock or covered by coarse-grained sediments, such as blockfields and coarse tills. In northern Norway, palsa mires are abundant and organic material and vegetation strongly influence the ground thermal regime
  • 2013
  • Standing different ground : the spatial heterogeneity of territorial disputes
  • 2013