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Full-Text Articles in Glaciology
Nitrate Plus Nitrite Concentrations In A Himalayan Ice Core, William Berry Lyons, Paul Andrew Mayewski
Nitrate Plus Nitrite Concentrations In A Himalayan Ice Core, William Berry Lyons, Paul Andrew Mayewski
Earth Science Faculty Scholarship
The measurement of chemical constituents in glacial ice has been useful in discerning historic trends in chemical deposition and hence paleo-atmospheric records in remote areas (Thompson and Mosley - Thompson, 1981; Johnson and Chamberlain, 1981; Ng and Patterson, 1981; Neftel et al., 1982). However, delineating the sources of the deposited chemical species in question is not always straightforward. This has been especially true for nitrate. Although it is now believed that man-made emissions are responsible for a high percentage of nitrate being deposited in remote areas of the Northern Hemisphere, numerous natural sources, named and unnamed, have also contributed to …
Multiple Glaciations Of The Cordon Del Plata, Mendoza, Argentina [Glaciaciones Multiples Del Cordon Del Plata, Mendoza, Argentina], William J. Wayne, Arturo E. Corte
Multiple Glaciations Of The Cordon Del Plata, Mendoza, Argentina [Glaciaciones Multiples Del Cordon Del Plata, Mendoza, Argentina], William J. Wayne, Arturo E. Corte
Department of Earth and Atmospheric Sciences: Faculty Publications
Evidence exists for four glaciations in the Río Blanco basin west of Mendoza, Argentina. Morphology, superposition of tills, soil-profile development, loess thickness, and boulder weathering have been the techniques most useful in mapping the tills. Glaciers of Vallecitos (= Wisconsinan) age extended to 2600 m and left distinctive moraines. Tills of two preVallecitos glacier advances cover the floor of the valley from 2600 m to below 2100 m, and remnants of one of the tills extend nearly to the junction with Río Mendoza (1400 m) 13 km below the lowest Vallecitos moraines. These deposits were considered to be mudflows rather …
Morphology And Dynamics Of The Rock Glaciers In Southern Victoria Land, Antarctica, Jon M. Hassinger, Paul Andrew Mayewski
Morphology And Dynamics Of The Rock Glaciers In Southern Victoria Land, Antarctica, Jon M. Hassinger, Paul Andrew Mayewski
Earth Science Faculty Scholarship
A baseline study of rock glaciers located in the ice-free valleys of southern Victoria Land, Antarctica, was performed in order to determine their usefulness as proxy tools in studies of climatic change. The distribution of the 32 rock glaciers identified in this analysis is principally attributed to site-specific controls including proximity to localized moisture sources and low ambient site temperature controlled by elevation, orientation, and topographic shading. The relative activity of rock glaciers and their vertical velocity profiles are inferred from termini morphology. Thirty-eight percent of the rock glaciers are stagnant, 41% show velocity decreasing rapidly with depth, and velocity …
Chemical Composition Of A High Altitude Fresh Snowfall In The Ladakh Himalayas, Paul Andrew Mayewski, William Berry Lyons, N Ahmad
Chemical Composition Of A High Altitude Fresh Snowfall In The Ladakh Himalayas, Paul Andrew Mayewski, William Berry Lyons, N Ahmad
Earth Science Faculty Scholarship
Studies of the chemical constituents in Antarctic and Greenland snow and ice cores have proven to be extremely useful for determining the composition of the atmosphere during past climatic events (Boutron and Delmas, 1980; Herron, 1982) and hence provide data concerning climatic change. Despite the potential for the collection of similar types of information from high altitude temperate glacier snow and ice cores, their study has been limited. In addition, unlike polar ice sheets, high altitude temperate glaciers are not only close to populated area but have higher accumulation rates. Owing to the latter, preservation of detailed records on sub-annual …
Ice Mass Fluctuations In Northernvictoria Land, Paul Andrew Mayewski
Ice Mass Fluctuations In Northernvictoria Land, Paul Andrew Mayewski
Earth Science Faculty Scholarship
[From the introduction] Rennick Glacier is one of the major ice drainages for the northern Victoria Land sector of East Antarctica. Unlike glaciers farther south along the Transantarctic Mountains, Rennick Glacier does not drain into the Ross Ice Shelf but flows directly into a seasonally ice-covered ocean. Therefore, current fluctuations of this glacier are unhampered by the dampening effects of the Ross Ice Shelf. The primary controls on the activity of this glacier and others in this region are mass balance and sea level.