Methods to automatically derive landforms have typically focused on pixel-based, bottom-up approaches and most commonly on the derivation of topographic eminences. In this paper we describe an object-based, top-down algorithm to identify valley floors. The algorithm is based on a region growing approach, seeded by thalwegs with pixels added to the region according to a threshold gradient value....

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...

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Scientific visualization of geospatial data provides highly effective tools for analys...

Water movement processes through the landscape to the stream requires an understanding of run-off, lateral flows and groundwater processes. The conceptualisation of how these processes interact in the landscape plays a vital role in the development of water and solute movement models. The development of such models are used to inform management decisions. These decision are becoming more focuse...

Anthropogenic hazards are arising from human actions or negligences. can affect both and the broader ecosystem various landforms. Waste as effect of activity is a big problem in urban areas related to difficulty waste management while production continues increase. The impact poor city potential anthropogenic hazard for region. Part that often receives less attention environmental sanitation ha...

The Lunar Reconnaissance Orbiter Camera (LROC) is the first instrument to provide widespread coverage with a range of incidence angles at the resolution required to detect small-scale landforms. A sample (n = 238) of globally distributed, small-scale graben average 26 m wide and 179 m long. When dividing the population into those located within mare and highland regions, we observe that graben ...

Automatic procedures for landform extraction is a growing research field but extensive quantitative studies of the prediction accuracy Landform Classification (ACL) based on direct comparison with geomorphological maps are rather limited. In this work, we test an algorithm automatic classification large sector Ionian coast southern Italian belt through detailed map. was performed by using indiv...

This paper explores the relationship in three sedimentary systems of Canary Islands (Spain) between four major land change processes (resource extraction, urbanization, tourism and nature protection) six main environmental consequences (impacts on aeolian dynamics, changes sand landforms, disappearance landforms entire systems, vegetation, impacts socioeconomic system, use patterns). The result...

extended abstractintroductiontoday, large number of world’s major cities is located in coastal environments these towns have and all important positions in the economic, cultural and social functions. coastal areas and the cities located in they are economically very important in terms of the environment, sensitive to many of factors influencing and physically, against a variety of natural haza...