Results 11 to 20 of about 313 (137)

Extracting a Connected River Network from DEM by Incorporating Surface River Occurrence Data and Sentinel-2 Imagery in the Danjiangkou Reservoir Area

Remote Sensing, 2023
Accurate extraction of river network from the Digital Elevation Model (DEM) is a significant content in the application of a distributed hydrological model.
Feng Ling, Pengcheng Zhao, Yang Qichi
exaly   +4 more sources

Global DEMs vary from one to another: an evaluation of newly released Copernicus, NASA and AW3D30 DEM on selected terrains of China using ICESat-2 altimetry data

International Journal of Digital Earth, 2022
A good understanding of the quality of digital elevation model (DEM) is a perquisite for various applications. This study investigates the accuracy of three most recently released 1-arcsec global DEMs (GDEMs, Copernicus, NASA and AW3D30) in five selected
Lunche Wang, Hui Li, Linwei Yue
exaly   +3 more sources

Accuracy Assessment of High-Resolution Globally Available Open-Source DEMs Using ICESat/GLAS over Mountainous Areas, A Case Study in Yunnan Province, China

Remote Sensing, 2023
The Open-Source Digital Elevation Model (DEM) is fundamental data of the geoscientific community. However, the variation of its accuracy with land cover type and topography has not been thoroughly studied.
Menghua Li, Xiebing Yin, Bo-Hui Tang, Mengshi Yang   +3 more
doaj   +2 more sources

Avaliação comparativa da precisão vertical de modelos digitais de elevação derivados de satélites globais gratuitos [PDF]

Revista Espinhaço, 2021
Os Modelos Digitais de Elevação (MDE) possibilitam identificar resultantes geomorfológicas e modelar a dinâmica dos processos da superfície terrestre. Identificar e analisar a precisão vertical dos MDE é pertinente para compreender as possibilidades de ...
Heitor Carvalho Lacerda, Rodrigo Leitão, Marcelo Antônio Nero, Plínio da Costa Temba, Diego Rodrigues Macedo   +4 more
doaj   +2 more sources

Estimating mangrove aboveground biomass in the Colombian Pacific coast: A multisensor and machine learning approach [PDF]

Heliyon, 2023
The Colombian Pacific Coast is renowned for its exceptional biodiversity and hosts vital mangrove ecosystems that benefit local communities and contribute to climate change mitigation.
John Josephraj Selvaraj, Bryan Ernesto Gallego Pérez   +1 more
doaj   +2 more sources

Livelihood and Dietary Transitions in Subsistence Populations of Northern Laos: Insights From Carbon and Nitrogen Stable Isotope Analysis. [PDF]

Am J Biol Anthropol
Conceptual Framework: Livelihood, diet, and hair isotope values. ABSTRACT Objectives Rural populations in northern Laos have experienced dramatic socioeconomic transformation driven by national policies and regional economic integration, substantially influencing their self‐sufficient livelihoods.
Li Z, Kibe M, Mizuno Y, Saitoh M, Yamazaki K, Masuoka H, Kosaka S, Natsuhara K, Hirayama K, Inthavong N, Kounnavong S, Yoneda M, Tomita S, Umezaki M.   +13 more
europepmc   +2 more sources

Elephant space use and habitat selection change across drought timescales. [PDF]

J Anim Ecol
Drought threatens wildlife worldwide, but little is known about wildlife behaviour during drought. This study combines 19 years of elephant GPS data with drought conditions at three timescales. Key findings include that elephants (i) move less during drought at a 1‐month timescale and (ii) change habitat selection across drought timescales.
Bouwman I, Claassen T, Chase MJ, Landen K, Huijbregts MAJ, Tucker MA.   +5 more
europepmc   +2 more sources

Canada1Water digital terrain model with bathymetry dataset(Zenodo). [PDF]

Data in Brief
National integrated water modelling of Canada required a (DEM) Digital Elevation Model for all continental Canada at a single resolution, with bathymetry, and inclusion of transboundary watersheds with the United States.
Eric D. Kessel, Steve K. Frey, Hazen A.J. Russell   +2 more
doaj   +2 more sources

Quality Assessment of Digital Elevation Models in a Treeless High-Mountainous Landscape

magazén, 2021
Global Digital Elevation Models (DEMs) are widely employed in geoarchaeology. Usually, their adequacy for particular landscapes is not tested. We assessed 30m-resolution-DEMs (ASTER, SRTM, ALOS, EU-DEM, NASADEM, NEXTMap) with local precision datasets.
Hnila, Pavol, Elicker, Julia
doaj   +2 more sources

High Spatial Resolution Ensemble Species Distribution Modeling of <i>Rhodnius prolixus</i>, Vector of Chagas Disease, in Western Venezuela. [PDF]

Geohealth
Abstract Rhodnius prolixus is the most common and abundant kissing bug found in Royal and other native palms from western Venezuela. R. prolixus is a dominant vector of Trypanosoma cruzi, the parasite causing Chagas disease. Here we use species distribution models (SDMs) to estimate habitat suitability for R. prolixus.
Gao Y, Añez N, Chaves LF.
europepmc   +2 more sources