منابع مشابه
Origin and Evolution of Dry Valleys South of Ronkonkoma Moraine
of the Thesis Origin and Evolution of Dry Valleys south of Ronkonkoma Moraine
متن کاملMisfit Streams and the Possible Glacial Origin of Their Valleys
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 ...
متن کاملValleys on Hecates Tholus, Mars: origin by basal melting of summit snowpack
Valley networks observed on the martian surface are found mostly on Noachian-aged highlands units, but a few occur on younger volcanic edifices. Enigmatically, they do not occur on all younger volcanoes of similar age or location. Using new data, we reanalyze the radially arrayed valleys on the flanks of Hecates Tholus, a Hesperian-aged shield volcano, and test the hypothesis that these valleys...
متن کاملEcologically-based Management Factors and criteria of River-Valleys in Tehran metropolis-Case Study: River-Valleys of Kan
Iran has seasonal rivers because of dry climate, low rainfall and different topography. These river- valleys have main role in forming, genesis, and sustainability of human settlements and provide different ecological services. The main services include beauty, store of green spaces, water supply, reduce and create temperature differences, local air flow and natural ventilation which are part o...
متن کاملOn Constrained-Instanton Valleys
We develop a systematic treatment for the quasi-zero modes, which play an important role in nonabelian gauge theories. It can be used to derive the analytic forms for the constrained instantons in the Yang-Mills-Higgs theory. This will automatically sum up contributions to all orders in ρ, the instanton size. We also give the analytic expressions for the instanton-antiinstanton pair, with an ar...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1866
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800198073