Segregated ice structures in various heaved permafrost landforms through CTscan
The study area is located near the Inuit community of Umiujaq and in the area around the mouth of the Nataspoka River on Hudson Bay. Images from tomodensitometric scanning (CTscan) on numerous permafrost cores from permafrost mounds and plateaus
Analyse de l’évolution d’une série de cyclones tropicaux (CT) en 2009 dans l’océan Pacifique et de leur comportement inhabituel. L’A. étudie le mécanisme d’interaction d’une paire de CT à différente intensité. Il analyse également les interactions
triples entre la paire des CT et le front polaire, la transformation et la régénération des CT après leur entrée dans la zone de front froid.
under on-farm conditions where pairs of adjacent fields under NT and conventional tillage (CT) were compared. Soils were slightly to highly calcareous with medium textures ranging from sandy loam to silty clay loam. Results indicate that NT increased
surface aggregate stability with respect to CT systems through lower soil disturbance and higher organic carbon (OC) content at the soil surface. Slaking was the dominant disaggregation process of the cultivated soils and was strongly and negatively
affected by aggregate-associated OC. This study shows that, under the rainfed conditions of semiarid Aragon, NT reduces the susceptibility of soil surface to crusting and water erosion as compared to CT systems.
EVK4-CT- 2001-00052) sought to understand recent trends in urban sprawl in a number of case study urban regions and to advise the European Commission on policy development with regard to the control, management and amélioration of the effects of urban
Objectives were to quantify rainfall partitioning and sediment delivery improvements with surface applied FGD gypsum from an Ultisol managed to conventional till (CT) and to assess the feasibility of using FGD gypsum on agricultural land in southern
Georgia. A field study (Faceville loamy sand, Typic Kandiudult) was established (2006, 2007) near Dawson, GA managed to CT, irrigated cotton (Gossypium hirsutum L.). Results and discussion. In conclusion, applying FGD gypsum to agricultural lands is a cost
Analyse de l’évolution des cyclones tropicaux (CT) de l’océan Pacifique à l’aide des modèles numériques de l’atmosphère ETA et WRF NMM. Les AA. calculent la trajectoire du CT et des champs des composantes météorologiques (pression, vitesse et
Analyse de l’influence des petites surfaces de la terre ferme sur la structure et la configuration du cyclone tropical (CT) ainsi que sur ses différentes caractéristiques (la zone du vent, l’énergie cinétique, la vorticité) et leur changement au
diminution d’un gradient barrique à cause de l’éloignement du CT de la source de chaleur océanique.
climate). Two treatments were conducted at each site and were traditional tillage (TT, mouldboard plow with residue incorporation) and conservation tillage (CT, no-tillage with residues left on the soil surface). In the surface soil (0-20 cm), SOC and TN
concentrations and C:N ratio were uniformly-distributed under TT. The responses of SOC and TN stocks to CT differed between the sites and among the soil depths. SOC storage was increased at 0–5 cm depth but decreased at 10–20 cm depth by conservation tillage
by wind erosion on agricultural land in Central Aragon. This paper gives an overview of the main results regarding the effects of agricultural practices (i.e. conventional, CT, versus reduced tillage, RT) on surface conditions affecting wind erosion
province. Field plots were set up in 2001 and included the following soil management practices : subsoiling with mulch (SSM), no-till with mulch (NTM), reduced tillage (RT), and a conventional tillage control (CT). Results and discussion.
In the Chinese Loess Plateau, 28 field rainfall simulations were carried on loamy soils under different management practices, namely conventional tillage (CT), no till with mulch (NTM), reduced tillage (RT), subsoiling with mulch (SSM), subsoiling