نتایج جستجو برای: glacial sedimentation

تعداد نتایج: 29015  

2008
JIM BOGEN

Climate change scenarios indicate that most glaciers in Norway will have disappeared by the year 2100. As the downstream river reaches are often completely dominated by glacial sediments, large environmental changes are expected. This paper discusses and reviews sediment transport studies in order to deduce the impact of climate change on the sediment delivery of glaciers. Sediment monitoring p...

2004
Patrick L. Barnard Lewis A. Owen Robert C. Finkel

The Gangotri Glacier, at the source of the Ganges River, has fluctuated greatly throughout the late Quaternary in response to climatic oscillations. This has resulted in impressive moraines, paraglacial debris flow fans and terraces along the upper stretches of the Bhagirathi Valley. Cosmogenic radionuclide (CRN) dating of glacial and paraglacial landforms shows that fans, terraces and associat...

2013
IAIN D. LEIGHTON JOHN F. HIEMSTRA CHRISTOPH T. WEIDEMANN Christoph T. Weidemann

It is a scientist’s mission to try to remain unbiased. However, certain factors play a role in scientific analyses that are not controlled by conscious thought. These factors are potentially very important in areas of science where interpretations are based on a scientist’s ability to identify patterns or structures. One such area is the micromorphology of glacial sediments. In this paper we in...

2006
LEWIS A. OWEN

impressive Quaternary lacustrine deposits are present as terrace remnants throughout the Karakoram Mountains, northern Pakistan. They are mainly the result of damming of drainage systems during glacial advances or by catastrophic mass movement deposits. The longevity of most lakes is relatively short, in the order of years to tens of yeaa, but sedimentation rates are extremely high as a consequ...

1999
M. E. Weber N. G. Pisias

High-resolution records of glacial^interglacial variations in biogenic carbonate, opal, and detritus (derived from non-destructive core log measurements of density, P-wave velocity and color; rv 0.9) from 15 sediment sites in the eastern equatorial (sampling resolution is V1 kyr) clear response to eccentricity and precession forcing. For the Peru Basin, we generate a high-resolution (21 kyr inc...

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