Results 1 to 10 of about 6,615,362 (295)
STUDY OF THE LANDFORMS OF THE IBICUÍ RIVER BASIN WITH USE OF TOPOGRAPHIC POSITION INDEX
Revista Brasileira de Geomorfologia, 2018 The Topographic Position Index (TPI) is an algorithm which calculates the difference of the elevation between a central pixel ( and the mean of the elevation of its surroundings () surroundings defined by of a radius determined by the user. The study was
Romario Trentin +1 more
doaj +8 more sources
AgronomyAgricultural systems exhibit a large degree of within-field yield variability. We require a better understanding of the drivers of this variability in order to optimally manage croplands.
Jacob A. Macdonald +8 more
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Delineation of Site-Specific Management Units for Operational Applications Using the Topographic Position Index in La Pampa, Argentina [PDF]
Computers and Electronics in Agriculture, 2016 Display Omitted Yield values are related to water availability, soil texture and topography.The topographic position index (TPI) can be used to evaluate local topography.TPI correlates better with yield than topography.The topographic features were characterized using the autocorrelation function.Classified TPI maps can be used to delineate MU for ...
María Soledad Mieza +3 more
exaly +7 more sources
TOPOGRAPHIC POSITION INDEX BASED LANDFORM ANALYSIS OF MESSARIA (IKARIA ISLAND, GREECE) [PDF]
Acta Geobalcanica, 2017 This paper aims to classify and analyze landforms in the broader area of Messaria region of Ikaria Island, Greece using GIS techniques. Landform categories were determined by implementing Topographic Position Index (TPI).
Athanasios Skentos
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A Parsimonious Approach to Estimate Soil Organic Carbon Applying Unmanned Aerial System (UAS) Multispectral Imagery and the Topographic Position Index in a Heterogeneous Soil Landscape [PDF]
Remote Sensing, 2021 Remote sensing plays an increasingly key role in the determination of soil organic carbon (SOC) stored in agriculturally managed topsoils at the regional and field scales. Contemporary Unmanned Aerial Systems (UAS) carrying low-cost and lightweight multispectral sensors provide high spatial resolution imagery (<10 cm).
Michael Sommer, Marc Wehrhan
exaly +5 more sources
Hydrological Sciences Journal, 2022 Defining river networks from a digital elevation model (DEM) is a critical step in many hydrological studies. Most methods rely on analyses of flow accumulation based on a single drainage area threshold value.
Vinicius Alencar Siqueira +2 more
exaly +4 more sources
Landform classification based on topographic position Index
Mongolian Journal of Geography and Geoecology, 2022 Earth surface study or Geomorphology is one of the fundamental physical geographic studies. The ultimate result of the geomorphological study is shown as a map and many geomorphological researchers have been developing their geomorphology-mapping methodology over time.
Odbaatar Ekhjargal +2 more
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IOP Conference Series: Earth and Environmental Science, 2020 Abstract Mostly, the researchers have been carried out landform using survey method and manual delineation. Integrating remote sensing data and GIS technique can automate identifying of landform using Topographic Position Index data as one of remote sensing data.
Nurul Muddarisna +3 more
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Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt [PDF]
Alexandria Science Exchange Journal, 2018 The aim of this study is to compare the classification of the landscape of the area located between Al-Alamien and Ras El-Hekma to landform classes using two different classification methods; the terrain attributes method and the topographic position index (TPI) method. Terrain attributes classification method derived from a digital elevation model and
Sami Z. Mohamed +3 more
openaire +2 more sources