نتایج جستجو برای: landform classification

تعداد نتایج: 493310  

2014
Anne Elina Flink Riko Noormets Nina Kirchner Douglas I. Benn Adrian Luckman Harold Lovell

This study focuses on the glacial landform record associated with recent surge events of Tunabreen a calving tidewater glacier in Tempelfjorden, Spitsbergen. Submarine geomorphology and recent terminal fluctuations of Tunabreen’s glacier front were studied using high-resolution multibeambathymetric data and a range of published and remotesensing sources, including topographic maps, satellite im...

Journal: :Tanzania journal of health research 2014
Joel L Meliyo Boniface H J Massawe Balthazar M Msanya Didas N Kimaro Proches Hieronimo Loth S Mulungu Nganga I Kihupi Jozef A Deckers Hubert Gulinck Herwig Leirs

Previous studies suggest that rodent burrows, a proxy for rodent population are important for predicting plague risk areas. However, studies that link landform, surface attributes and rodent burrows in the Western Usambara Mountains in Tanzania are scanty. Therefore, this study was conducted in plague endemic area of the Western Usambara Mountains in northern, Tanzania, to explore the relations...

Journal: :مرتع و آبخیزداری 0
امیر هوشنگ احسانی دانشیار دانشکدة محیط زیست، دانشگاه تهران مرضیه فروتن دانشجوی دکتری جغرافیا، دانشگاه کلگری کانادا

in this study the land surface in western half of hyper-arid lut desert, in south east of iran, which is covered by yardangs, a worldwide typical landform for aeolian erosion, were classified by self organizing maps (som) method. in the first step by using digital elevation model with 10 m resolution and matlab software, 22 morphometric parameters were calculated based on derivative of the surf...

2016
P. Fischer

In this study we evaluate whether the methodology of Boosted Regression Trees (BRT) suits for accurately predicting maximum wind speeds. As predictors a broad set of parameters derived from a Digital Elevation Model (DEM) acquired within the Shuttle Radar Topography Mission (SRTM) is used. The derived parameters describe the surface by means of quantities (e.g. slope, aspect) and quality (landf...

2007
S. Dinesh

Geomorphological landforms are generally viewed as Boolean objects. However, recent studies have shown that landforms are more suitable to be viewed as fuzzy objects, whereby a landform is defined as a region in the continuum of variation of the surface of the earth. In this paper, the fuzzy classification of physiographic features extracted from multiscale DEMs is performed. First, the lifting...

2015

In the process of analyzing aerial photographs to obtain information on the engineering characteristics of soils, the first and perhaps the most important step is to identify the landform. The landform may consist of hills, valleys, plains, terraces, beaches, dunes, and other topo­ graphic features largely created by the forces of erosion. The im­ portance of the landform lies in its relation t...

Journal: :Intelligent Automation & Soft Computing 2012
Jian Ou Xingnan Zhang Biao Yang Wei Wu

-For the need of digital basin 3D simulation, the paper proposes a visualization optimization method for large-scale landform and flow pattern. Based on call of landform data partitioning organization and dynamic processing of visual regional data, for the present situation of commonly using ADO(ActiveX Data Objects) developing interface to realize the operation for database, OCI (Oracle Call I...

2015
E. L. Poelking C. E. R. Schaefer E. I. Fernandes Filho A. M. de Andrade A. A. Spielmann

Integrated studies on the interplay between soils, periglacial geomorphology and plant communities are crucial for the understanding of climate change effects on terrestrial ecosystems of maritime Antarctica, one of the most sensitive areas to global warming. Knowledge on physical environmental factors that influence plant communities can greatly benefit studies on the monitoring of climate cha...

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