Formation of sorted patterned-grounds - a literature review
Classification ; Patterned ground ; Pedogenesis ; Periglacial features ; Soil ; Theory
The article presents and compares current views on the development of sorted patterned-grounds in the periglacial zone. The theories can be divided into 8 groups, which assume : 1) convection and/or circulation of the ground en masse ; 2
) circulation of only fine particles of the ground ; 3) convection of pore water ; 4) heave-settlement pulsation and lateral expansion on the fine domains ; 5) cracking of the ground followed by heave-settlement pulsation and lateral expansion of the centres
Modelling patterned ground distribution in Finnish Lapland : an integration of topographical, ground and remote sensing information
Cold area ; Digital elevation model ; Finland ; Geographical information system ; Lapland ; Patterned ground ; Periglacial features ; Plant canopy ; Remote sensing ; Slope gradient ; Topography
The AA. present a new modelling approach that integrates topographical, ground and remote sensing information in predictive geomorphological mapping using generalized additive modeling (GAM). The results indicate that non-sorted patterned ground
is more common at lower altitudes where the ground moisture and vegetation abundance is relatively high, whereas sorted patterned ground is dominant at higher altitudes with relatively high slope angle and sparse vegetation cover. This paper confirms
the potential utility of remote sensing information for modelling patterned ground distribution in subarctic landscapes.
Hydrologické a klimatologické hodnoceni podzemnich vod CSR Hydrological and climatological evaluation of ground waters in the C.S. R
Detailed evaluation of ground waters in the Czech Socialist Republic, the results of observations of ground water levels from selected objects and of discharge of important springs, zonality of the regime and regionalisation of ground waters. (MS).
The ice content of near-surface permafrost was determined at more than 70 sites in the Mackenzie Delta. The principal objectives of this paper are : to describe near-surface ground-ice contents for different alluvial terrain types in the Mackenzie
Delta; to identify the factors that influence the development of near-surface ground ice; and to examine the influence of ground ice on the flooding hydrology of terrestrial environments in the Mackenzie Delta.
Relict sorted patterned ground in Rostu, northernmost Sweden
C 14 dating ; Cold area ; Deglaciation ; Patterned ground ; Periglacial features ; Quaternary ; Spatial variation ; Stratigraphy ; Sweden
The objective of this study is to determine the age of active periods in relict sorted patterned ground on Rostu by studies of internal structures, spatial analysis and radiometric datings.
Classification and quantification of ground-destruction phenomena in ecosystems of high mountain regions of the Western Carpathians
Author deals with a location of the ground destruction in the system of geomorphological processes and classifies the phenomena and forms in high mountain, areas. An extend of the destroyed soil mantles and action of different morphogenetic
processes as well as the rate of ground destruction processes are evaluated above the timberline in the Western Carpathians. (MS).
Controls on sorted patterned-ground geometry in the Swiss Alps
Alps (The) ; Freeze-thaw cycle ; Lithology ; Mountain ; Patterned ground ; Periglacial features ; Spatial distribution ; Switzerland
This paper represents results of field investigations on the distribution, morphology and structure of patterned ground formed on alpine slopes in the Swiss Alps, focusing on factors affecting the spacing of patterned ground. The study area lies
This article summarizes the theory of climate change and the relationship of climate-change forcing to hydrologic and aquifer processes. It focuses on regional aquifer systems and on the methods to link large-scale climate-change processes to ground
-water recharge and to simulate ground-water flow and solute transport in a warmer, 2xCO2 climate. In addition, it outlines the development of a methodology to quantify the effects of climate change and of changes in ground-water use by population growth
Ground thermal profiles from Mount Kenya, East Africa
Ground freezing ; Kenya ; Kenya Mount ; Mountain ; Snow cover ; Soil temperature ; Temperature ; Thermal regime ; Tropical zone
This paper presents and compares ground thermal regimes at 4200 and 4800 m a.s.l. on Mount Kenya's southern flank. The aim is to provide an understanding of near-surface cryo-thermal dynamics in this equatorially driven climate. The AA. demonstrate
that a greater longevity of contemporary thin snow cover at 4800 m a.s.l. permits progressive sub-surface cooling with depth. However, the near-surface ground temperature profiles suggest that conditions are not conducive to permafrost development at these sites.
Frozen ground monitoring (2004-2006) in the source area of the Yellow River, China
China ; Climatic warming ; Ground freezing ; Ground survey ; Mountain ; Periglacial features ; Permafrost ; Seasonal variation ; Soil temperature ; Temperature ; Tibet
Ground thermal and hydrological regimes at Madoi (4273m ASL), northeastern Tibetan Plateau, are described on the basis of 2 years of automatic and manual observations of air and ground temperatures, precipitation, snow depth, soil moisture
and groundwater level. Extrapolation of the mean annual ground temperatures suggests that permafrost is unlikely present below an unfrozen talik, while it possibly disappeared within the last few decades. Soil moisture and groundwater level primary vary
Within-slope variability of ground heat flux, subarctic Yukon
This study examined local variability of heat flux within a north-facing hillslope in Wolf Creek basin, Yukon, during the thawed season of 1997. Ground heat flux was calculated by : 1) assessing vertical conduction and convection inputs using
nearsurface temperature gradients and rainfall and 2) combining the sensible heat from ground temperature change with the latent heat associated with melting ground ice. Discussion of the effectiveness of these 2 approaches in determining ground heat flux
Observations of sorted patterned ground features, High Valley/Tangle Lakes region, Central Alaska, U.S.A. in Periglacial processes and landforms.
These features have been studied since 1981, and since 1982 sorted circles at six patterned ground sites in High Valley have been monitored to determine their degree of activity.