نتایج جستجو برای: geomorphic

تعداد نتایج: 2264  

Journal: :آب و خاک 0
اسفندیارپور بروجنی اسفندیارپور بروجنی تومانیان تومانیان صالحی صالحی محمدی محمدی

abstract geopedology is a systematic approach of geomorphic analysis for soil mapping which focuses the field operation mainly on sample area. the purpose of this study is to determine the credibility of generalization of the results of geopedological approach for similar landforms in the borujen region, using diversity and similarity indices in a soil taxonomic hierarchical structure. after a ...

Journal: :تحقیقات جغرافیایی 0
منصور سعیدی کیا گروه جغرافیا دانشگاه رازی کرمانشاه محمود علائی طالقانی گروه جغرافیا دانشگاه رازی کرمانشاه

abstract: in this research, the relationship between geomorphologic factors with underground water resources in zahab plain (in west of kermanshah) has been analyzed using by analyzing-deducing and weighting methods. first, by using of pizometeric and exploratory well data, variation of water table in zahab plain has been comparative analysis with geomorphic unites and then, the zahab watershed...

2010
José M. García-Ruiz Juan I. López-Moreno

19 The hydrological and geomorphic effects of land use/land cover changes, 20 particularly those associated with vegetation regrowth after farmland abandonment were 21 investigated in the Central Spanish Pyrenees. The main focus was to assess the 22 interactions among slope, catchment, basin, and fluvial channel processes over a range 23 of spatial scales. In recent centuries most Mediterranean...

2001
Paul Batten

A new approach for describing the morphological character of a continuous landsurface is introduced. This new approach uses recent geocomputation advances as a fillip for reassessing geomorphological theory. During this paper three important components of the new approach that distinguish it from most pre-existing mapping frameworks are outlined. Firstly, the new spatial information application...

2015
Arvind Singh Liam Reinhardt Efi Foufoula-Georgiou

Understanding how landscapes respond to climate dynamics in terms of macroscale (average topographic features) and microscale (landform reorganization) is of interest both for deciphering past climates from today’s landscapes and for predicting future landscapes in view of recent climatic trends. Although several studies have addressed macro-scale response, only a few have focused on quantifyin...

2016
B. A. Adams K. X. Whipple K. V. Hodges A. M. Heimsath

Prior studies have proposed tectonic and climatic mechanisms to explain surface uplift throughout the Bhutan Himalaya. While the resulting enigmatic, low-relief landscapes, elevated above deeply incised canyons, are a popular setting to test ideas of interacting tectonic and climatic forces, when and why these landscapes formed is still debated. We test the idea that these landscapes were creat...

2003
Greg Tucker

This proposal sets out the justification, scope and terms of reference for conducting a 16-month pilot study of (1) the dynamics of geomorphic change in English lowland alluvial systems, focusing on the Upper Thames Valley, and (2) the implication of such change for paleoenvironmental reconstruction, preservation and visibility of the archaeological record, and for aggregates exploration. The p...

2016
Pipas Kumar Varun Joshi

The investigation of geo hydrological features of drainage basin is necessary for planning and implementation of various watershed development programmes. The visual interpretation techniques coupled with morphometric analysis is used in the present study to evaluate the geomorphic process of upper watershed of river Subarnarekha in the state of Jharkhand, India. Various spatial information is ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2000
W J Trush S M McBain L B Leopold

Rivers around the world are being regulated by dams to accommodate the needs of a rapidly growing global population. These regulatory efforts usually oppose the natural tendency of rivers to flood, move sediment, and migrate. Although an economic benefit, river regulation has come at unforeseen and unevaluated cumulative ecological costs. Historic and contemporary approaches to remedy environme...

2013
DAVID SANDWELL EMMANUEL GARCIA

M than 60% of the Earth’s land and shallow marine areas are covered by > 2 km of sediments and sedimentary rocks, with the thickest accumulations on rifted continental margins (Figure 1). Free-air marine gravity anomalies derived from Geosat and ERS-1 satellite altimetry (Fairhead et al., 2001; Sandwell and Smith, 2009; Andersen et al., 2009) outline most of these major basins with remarkable p...

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