GLACIAL TROUGHS AND HANGING LATERAL VALLEYS
نویسندگان
چکیده
منابع مشابه
study of glacial valley landform case study: sahand glacial valleys
abstract a mountain glacier, when it occupies a river valley, immediately begins to change the cross-section and profile of that valley. river valleys in mountain areas tends to have v-shaped profiles. glaciers work to widen as well as deepen their valleys and the typical cross-section of a glacial valley is u-shaped. the u-shaped glacial valley is one of the most characteristic of glacial land...
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Although only recently recognized, hanging tributary valleys in non-glacial landscapes are not uncommon in tectonically active regions. Standard river incision models do not allow for the formation of fluvial hanging valleys; these disequilibrium landforms present an opportunity to advance our understanding of river incision processes. In this work, we demonstrate that thresholds apparent in se...
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A study of misfit streams and meandering depressions developed in ground moraine deposits near Dayton, Ohio has indicated that streams are re-establishing old stream courses, which persist as buried channels previously carved into bedrock. The erosion of deep meandering channels in bedrock appears consistent with melt-water streams let down through glacial ice. Such channels would subsequently ...
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[1] We document and characterize hanging valleys in a fluvially eroded landscape in eastern Taiwan. Our conceptual model for the initiation of hanging valleys builds on a recently proposed model of bedrock incision in which erosion actually becomes less efficient on very steep channel gradients. If a pulse of incision in the main stem outpaces the tributary response, the gradients at tributary ...
متن کاملSpatially Resolved Glacial History on Gemina Lingula from Analysis of Topography between Troughs
TOPOGRAPHY BETWEEN TROUGHS. D.P. Winebrenner 1,2 , M.R. Koutnik 2 , E.D. Waddington 2 , A.V. Pathare 3 , S. Byrne 4 , and B.C. Murray 5 , 1 Applied Physics Laboratory, University of Washington, Box 355640, Seattle, WA 98195, [email protected] 2 Dept. of Earth and Space Sciences, University of Washington, Box 351310, Seattle, WA 98195, 3 Planetary Science Institute, 1700 E. Fort Lowell Rd.,...
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ژورنال
عنوان ژورنال: Science
سال: 1907
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.25.647.833-a