نتایج جستجو برای: ratio of valley floor width to valley height vf

تعداد نتایج: 22181690  

Journal: :Journal of Experimental Social Psychology 2018

2005
Rossman P. Irwin Alan D. Howard Robert A. Craddock Jeffrey M. Moore

[1] To explain the much higher denudation rates and valley network development on early Mars (> 3.6 Gyr ago), most investigators have invoked either steady state warm/wet (Earthlike) or cold/dry (modern Mars) end-member paleoclimates. Here we discuss evidence that highland gradation was prolonged, but generally slow and possibly ephemeral during the Noachian Period, and that the immature valley...

Journal: :Physical review letters 2014
W M Solomon P B Snyder K H Burrell M E Fenstermacher A M Garofalo B A Grierson A Loarte G R McKee R Nazikian T H Osborne

A path to a new high performance regime has been discovered in tokamaks that could improve the attractiveness of a fusion reactor. Experiments on DIII-D using a quiescent H-mode edge have navigated a valley of improved edge peeling-ballooning stability that opens up with strong plasma shaping at high density, leading to a doubling of the edge pressure over the standard H mode with edge localize...

2008
Sharon E. Clarke Kelly M. Burnett Daniel J. Miller

Managers, regulators, and researchers of aquatic ecosystems are increasingly pressed to consider large areas. However, accurate stream maps with geo-referenced attributes are uncommon over relevant spatial extents. Field inventories provide high-quality data, particularly for habitat characteristics at fine spatial resolutions (e.g., large wood), but are costly and so cover relatively small are...

2008
Rajesh Bahadur Thapa Yuji Murayama

Quantifying landscape pattern and its change are essential for the monitoring and assessment of environmental consequences of urban area. This paper aims to analyze spatiotemporal patterns of urban landscape changes in Kathmandu Valley, Nepal by combining remote sensing, GIS and landscape metrics. Multi-temporal satellite images from high resolution (CORONA, SPIN and IKONOS) to moderate resolut...

2008
C. DAVID WHITEMAN SHIYUAN ZHONG

Thermally driven downslope flows were investigated on a low-angle (1.6°) slope on the west side of the floor of Utah’s Salt Lake Valley below the Oquirrh Mountains using data from a line of four tethered balloons running down the topographic gradient and separated by about 1 km. The study focused on the evolution of the temperature and wind structure within and above the slope flow layer and it...

Journal: : 2022

The study area is located in the Eastern Anatolian Plateau found Alpine-Himalayan fold mountain belt. Engil River Upper Basin (Güzelsu) within Lake Van Closed Basin, largest soda lake this belt terms of volume and area. This aims to investigate geomorphologic evolution Güzelsu support development with morphometric analysis. With aim, a Digital Elevation Model (DEM) was created aim quantifying e...

Journal: :Ecology 2008
Jonathan D Coop Thomas J Givnish

Montane and subalpine grasslands are prominent, but poorly understood, features of the Rocky Mountains. These communities frequently occur below reversed tree lines on valley floors, where nightly cold air accumulation is spatially coupled with fine soil texture. We used field experiments to assess the roles of minimum temperature, soil texture, grass competition, and ungulate browsing on the g...

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