Two major meltwater events are documented in cores from the NW Labrador Sea. These meltwater events coincide with Heinrich (H) layers 1 and 2 from North Atlantic sediments. The AA. hypothesize that δ18O records from these sites close to the former
ice margin should indicate the largest depletion due to meltwater of all North Atlantic sites.
Dissolved oxygen variations in Alpine glacial meltwaters
Chemical erosion ; Geochemistry ; Glacial features ; Glacier ; Meltwater ; Mountain ; Oxygen ; Switzerland ; Valais
Recent models of chemical weathering in alpine glacial meltwaters suggest that sulphide oxidation is a major source of solute in the distributed component of the subglacial hydrological system. The O2 content of glacial meltwaters depends
Channel change in relation to meltwater flooding, Bas Glacier d'Arolla, Switzerland
Channel geometry ; Flood ; Fluvial processes ; Fluvioglacial features ; Glacier ; Meltwater ; Mountain ; River bed ; Sandur ; Switzerland ; Valais
Meltwater flooding in the valley train of the Bas Glacier d'Arolla, (1986 and 1987) produced significant changes in channel form. The general channel response involved switching from a single thread, low sinuosity stream to a wider channel
with zones of braiding. During floods spatial variations in channel adjustment were considerable and contrasts in channel change during different floods were very marked. Meltwater floods cause periodic sediment flushing events which are not necessarily
Since the 1950s, a lake filled from meltwaters of the Imja Glacier in the Himalaya of Nepal has grown so large and deep that it poses a major flood threat if its waters break away. - (DWG)
Alberta ; Alps (The) ; Canada ; Carbonate rock ; Chemical alteration ; Cold area ; Europe ; Glacier ; Hydrochemistry ; Meltwater ; Mountain ; Weathering
Nearly 200 analyses of meltwaters, ice and snow from three alpine glacial sites in carbonate terrain are summarized and discussed in terms of sources of solutes and kinetic controls on the progress of weathering reactions. Most data derive from
The views of different AA. concerning the reconstruction of the ice marginal positions of the maximum advance and the retreating inland-ice are given. Typical features are outwash plains, meltwater channels as well as kame-like meltwater deposits
Active layer ; Arctic Region ; Coastal environment ; Fjord ; Glacial features ; Glaciology ; Meltwater ; Soil temperature ; Spitsbergen ; Svalbard
moraines. Thermal erosion may lead to strong morphological transformation of vast areas. Climate, and thus the production of meltwater, ground temperature changes and differences in the development of the active layer are the most important factors
Crop fields in this zone are irrigated with meltwater coming from the Central Karakoram range. The results suggest that farmers have learned to maximize their outputs by matching certain crops with specific conditions of soil nutrients, slope