Application of the topographic position index to heterogeneous landscapes

Reu, Jeroen De; Bourgeois, Jean; Bats, Machteld; Zwertvaegher, Ann; Gelorini, Vanessa; Smedt, Philippe De; Chu, Wei; Antrop, Marc; Maeyer, Philippe De; Finke, Peter; Meirvenne, Marc Van; Verniers, Jacques; Crombé, Philippe

doi:10.1016/j.geomorph.2012.12.015

Cited by 454 publications

(240 citation statements)

References 59 publications

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“…All data and data transformations used in this work are freely available, produced by Geoscience Australia and cover the entirety or vast majority of Australia providing the ability to replicate this method. The TPI developed by [48,49] has been used to interpret numerous landscapes globally and across disciplines e.g., [50,51]. TPI is calculated as the mean elevation within a focal window of a specified radius around each cell in a DEM [48].…”

Section: Regolith-landform Analysismentioning

confidence: 99%

Objective Regolith-Landform Mapping in a Regolith Dominated Terrain to Inform Mineral Exploration

et al. 2018

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An objective method for generating statistically sound objective regolith-landform maps using widely accessible digital topographic and geophysical data without requiring specific regional knowledge is demonstrated and has application as a first pass tool for mineral exploration in regolith dominated terrains. This method differs from traditional regolith-landform mapping methods in that it is not subject to interpretation and bias of the mapper. This study was undertaken in a location where mineral exploration has occurred for over 20 years and traditional regolith mapping had recently been completed using a standardized subjective methodology. An unsupervised classification was performed using a Digital Elevation Model, Topographic Position Index, and airborne gamma-ray radiometrics as data inputs resulting in 30 classes that were clustered to eight groups representing regolith types. The association between objective and traditional mapping classes was tested using the 'Mapcurves' algorithm to determine the 'Goodness-of-Fit', resulting in a mean score of 26.4% between methods. This Goodness-of-Fit indicates that this objective map may be used for initial mineral exploration in regolith dominated terrains.

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Section: Regolith-landform Analysismentioning

confidence: 99%

Objective Regolith-Landform Mapping in a Regolith Dominated Terrain to Inform Mineral Exploration

et al. 2018

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“…The neighbourhood size selected for a TPI implementation is of utmost significance since different sizes reveal different landforms (De Reu et al, 2013;Ilia et al, 2013;Verhagen and Dragut, 2012;Weiss, 2001). …”

Section: Tpi Landform Classificationmentioning

confidence: 99%

“…Over the past few years, the implementation of automated techniques for landform classification has become very common among the scientific society (De Reu et al, 2013;Grohmann and Riccomini, 2009;Ilia et al, 2013;Rigol-Sanchez, et al 2015;Tagil and Jenness, 2008). What is more, the application of such techniques is not limited to geosciences.…”

Section: Introductionmentioning

confidence: 99%

Landform Analysis Using Terrain Attributes. A Gis Application on the Island of Ikaria (Aegean Sea, Greece)

Skentos

Anagnostopoulou

2017

Annals of Valahia University of Targoviste, Geographical Series

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The main objective of this study is to classify the landforms of Ikaria Island by conducting morphometric analysis. The whole classification process is based on the calculation of the Topographic Position Index (TPI). The delivered TPI landform classes are spatially correlated with the geology, slope, valley depth and the topographic ruggedness of the island. The results of this study indicate the presence of two distinctive landform units, affected mainly by the local geological setting.

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“…A etapa de definição do raio de análise da vizinhança, portanto, deve estar associada às características físicas da área de estudo e ao nível de detalhe pretendido pelo pesquisador (DE REU et al, 2013;SILVEIRA;SILVEIRA, 2014;SILVEIRA, 2015).…”

Section: Materiais E Métodosunclassified

Potencialidade do Índice de Posição Topográfica no Mapeamento Pedológico Preditivo em uma Sub-Bacia do Rio Capricórnio-PR

2017

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Application of the topographic position index to heterogeneous landscapes

Cited by 454 publications

References 59 publications

Objective Regolith-Landform Mapping in a Regolith Dominated Terrain to Inform Mineral Exploration

Objective Regolith-Landform Mapping in a Regolith Dominated Terrain to Inform Mineral Exploration

Landform Analysis Using Terrain Attributes. A Gis Application on the Island of Ikaria (Aegean Sea, Greece)

Potencialidade do Índice de Posição Topográfica no Mapeamento Pedológico Preditivo em uma Sub-Bacia do Rio Capricórnio-PR

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