Results 91 to 100 of about 3,037 (201)

A Quantitative Provenance Analysis (QPA) Approach to Quantify Controls on Sediment Generation and Sediment Flux in the Upper Reaches of the Magdalena River (Colombia): 1. Natural and Anthropic Controls on the Sand Fraction

Journal of Geophysical Research: Earth Surface, Volume 129, Issue 5, May 2024.
Abstract This study investigates the upper Magdalena river basin (Colombia), which is characterized by tectonic activity, tropical climate, heterogeneous lithological assemblages, and anthropic influence. It aims to comprehend factors controlling sediment generation, flux, and composition by incorporating petrographic data from 27 recent fluvial ...
S. Liedel, L. Caracciolo, J. C. Restrepo, G. J. Weltje, F. Lucà, A. Beltrán‐Triviño, J. D. Restrepo Ángel   +6 more
wiley   +1 more source

Prioritization of soil erosion-prone sub-watersheds using geomorphometric and statistical-based weighted sum priority approach in the middle Omo-Gibe River basin, Southern Ethiopia

International Journal of Digital Earth
Soil erosion, a major factor contributing to land degradation, poses significant environmental challenges across sub-Saharan Africa, including Ethiopia. This study identifies erosion-prone sub-watersheds in southern Ethiopia's middle Omo-Gibe River basin
Abera Abiyo Dofee, Pritam Chand, Rinku Kumar   +2 more
doaj   +1 more source

Assessing Glacial Modification of Bedrock Valleys in the Sierra Nevada, California, Using a Novel Approach [PDF]

, 2016
This study employed a semi-automated approach to evaluate the degree of glacial modification of bedrock valleys in the Sierra Nevada, California, by quantifying morphological variability in cross-sectional form assessed from ~27,000 locations throughout ...
Zimmer, Paul D.
core   +1 more source

Comparison between spectral angle mapper and euclidean distance in landform mapping [PDF]

, 2016
A classificação supervisionada por assinaturas geomorfométricas é um procedimento que pode auxiliar no mapeamento de formas de terreno a partir da utilização de medidas de similaridade ou distância.
Carvalho Júnior, Osmar Abílio de, Couto Junior, Antônio Felipe, Gomes, Roberto Arnaldo Trancoso, Guimarães, Renato Fontes, Martins, Éder de Souza, Souza, João Paulo Sena, Vasconcelos, Vinícius   +6 more
core   +1 more source

Optimización ambiental del trazado de corredores de carreteras con sistemas de información geográfica [PDF]

, 2012
En el presente artículo se proponen indicadores que permitan la búsqueda de trazados de autopistas más respetuosas con los valores ambientales del territorio en general y en particular con el paisaje.
Arce Ruiz, Rosa María, Loro Aguayo, Manuel, Martín Ramos, Belén, Ortega Pérez, Emilio   +3 more
core  

SLiX: A GIS Toolbox to Support Along-Stream Knickzones Detection through the Computation and Mapping of the Stream Length-Gradient (SL) Index

ISPRS International Journal of Geo-Information, 2020
The stream length-gradient (SL) index is widely used in geomorphological studies aimed at detecting knickzones, which are extensive along-stream deviations from the typical concave-up shape assumed for stream longitudinal profiles at steady-state ...
Daniela Piacentini, Francesco Troiani, Tommaso Servizi, Olivia Nesci, Francesco Veneri   +4 more
doaj   +1 more source

First GIS analysis of modern stone tools used by wild chimpanzees (Pan troglodytes verus) in Bossou, Guinea, West Africa [PDF]

, 2015
Stone tool use by wild chimpanzees of West Africa offers a unique opportunity to explore the evolutionary roots of technology during human evolution. However, detailed analyses of chimpanzee stone artifacts are still lacking, thus precluding a comparison
Arroyo, Adrian, Benito-Calvo, Alfonso, Carvalho, Susana, de la Torre, Ignacio, Matsuzawa, Tetsuro   +4 more
core   +5 more sources

Geomorphometry-Automatic Landform Classification

Journal of Geography, 2018
In the past, landforms were represented in physiographic and morphometric maps by hand drawing. With developments in digital elevation models (DEM), geographic information systems (GIS) and image analyses, automatic extraction of landforms from morphological parameters and data storage in databases is now possible and are actively utilized in various ...
openaire   +4 more sources

Geomorphometry: Today and Tomorrow [PDF]

, 2018
This paper summarizes the current state-of-the-art in geomorphometry and describes the innovations that are close at hand and will be required to push digital terrain modeling forward in the future. These innovations will draw on concepts and methods from computer science and the spatial sciences and require greater collaboration to produce “actionable”
openaire   +1 more source

Right-Angle Pattern of Minor Fluvial Networks from the Ionian Terraced Belt, Southern Italy: Passive Structural Control or Foreland Bending?

Geosciences, 2018
Morphometric analyses of both the topography and drainage network have been carried out in a large sector of the Ionian coastal belt of southern Italy in order to unravel the possible control of Late Quaternary thrust front activity on the evolution of ...
Dario Gioia, Marcello Schiattarella, Salvatore Ivo Giano   +2 more
doaj   +1 more source