Results 31 to 40 of about 23,863,306 (321)

Exploring multiple viewshed analysis using terrain features and optimisation techniques [PDF]

open access: yes, 2004
The calculation of viewsheds is a routine operation in geographic information systems and is used in a wide range of applications. Many of these involve the siting of features, such as radio masts, which are part of a network and yet the selection of ...
Kim, YH, Rana, S, Wise, S
core   +2 more sources

Decision trees for digital soil mapping on subtropical basaltic steeplands Árvores de decisão para o mapeamento digital de solos em encostas basálticas subtropicais

open access: yesScientia Agricola, 2011
When soil surveys are not available for land use planning activities, digital soil mapping techniques can be of assistance. Soil surveyors can process spatial information faster, to assist in the execution of traditional soil survey or predict the ...
Elvio Giasson   +4 more
doaj   +1 more source

GeoFlood: Large‐Scale Flood Inundation Mapping Based on High‐Resolution Terrain Analysis

open access: yesWater Resources Research, 2018
Recent floods from intense storms in the southern United States and the unusually active 2017 Atlantic hurricane season have highlighted the need for real‐time flood inundation mapping using high‐resolution topography.
Xing Zheng   +4 more
semanticscholar   +1 more source

Leading Progress in Digital Terrain Analysis and Modeling

open access: yesISPRS Int. J. Geo Inf., 2019
Digital Terrain analysis (DTA) and modeling has been a flourishing interdisciplinary field for decades, with applications in hydrology, geomorphology, soil science, engineering projects and computer sciences.
G. Sofia   +3 more
semanticscholar   +1 more source

Drainage Density and Its Controlling Factors on the Eastern Margin of the Qinghai–Tibet Plateau

open access: yesFrontiers in Earth Science, 2022
The drainage density (Dd) is an important index to show fluvial geomorphology. The study on Dd is helpful to understand the evolution of the whole hydrological and geomorphic process.
Hongshan Gao   +4 more
doaj   +1 more source

The Morphometry of the Deep-Water Sinuous Mendocino Channel and the Immediate Environs, Northeastern Pacific Ocean

open access: yesGeosciences, 2017
Mendocino Channel, a deep-water sinuous channel located along the base of Gorda Escarpment, was for the first time completely mapped with a multibeam echosounder.
James V. Gardner
doaj   +1 more source

Modeling river bed morphology, roughness, and surface sedimentology using high resolution terrestrial laser scanning [PDF]

open access: yes, 2012
Recent advances in technology have revolutionized the acquisition of topographic data, offering new perspectives on the structure and morphology of the Earth's surface.
Brasington, J.   +2 more
core   +2 more sources

Evolution of deep-seated landslide at Putanpunas stream, Taiwan

open access: yesGeomatics, Natural Hazards & Risk, 2017
This study used multi-stage remote sensing data in the analysis of the evolution of deep-seated landslides at Putanpunas stream, Taiwan. Terrain analysis, landslide interpretation, and the assessment of underlying mechanisms were included.
Chia-Ming Lo
doaj   +1 more source

A Probabilistic Assessment of Soil Erosion Susceptibility in a Head Catchment of the Jemma Basin, Ethiopian Highlands

open access: yesGeosciences, 2020
Soil erosion represents one of the most important global issues with serious effects on agriculture and water quality, especially in developing countries, such as Ethiopia, where rapid population growth and climatic changes affect widely mountainous ...
Mariaelena Cama   +5 more
doaj   +1 more source

Distribution and Structure Analysis of Mountain Permafrost Landscape in Orulgan Ridge (Northeast Siberia) Using Google Earth Engine

open access: yesLand, 2022
An analysis of the landscape spatial structure and diversity in the mountain ranges of Northeast Siberia is essential to assess how tundra and boreal landscapes may respond to climate change and anthropogenic impacts in the vast mountainous permafrost of
Moisei Zakharov   +4 more
doaj   +1 more source

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