Results 61 to 70 of about 17,069 (162)

Etude de la précision du satellite lidar GLAS-ICESat pour l'altimétrie des eaux continentales [PDF]

open access: yes, 2011
For the coming century, the control of water resources will be certainly the key of all the stakes for billions of human beings. Unfortunately a reduction in the number of stations is observed with a decline of measurements quality. Remote sensing, which
Baghdadi, N.   +2 more
core   +1 more source

Benefits of GNSS Local Observations Compared to Global Weather‐Based Models for InSAR Tropospheric Corrections Over Tropical Volcanoes: Case Studies of Piton De La Fournaise and Merapi

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract From repeat‐pass interferometry, tropospheric signals often prevent the detection of ground deformation signals. In recent years, tropospheric corrections derived from global weather‐based models have been implemented in several InSAR processing chains.
F. Albino   +7 more
wiley   +1 more source

Evidence for Erosional Efficiency of Extreme Precipitation Events at a Multi‐ Decadal Time Scale

open access: yesJournal of Geophysical Research: Earth Surface, Volume 130, Issue 3, March 2025.
Abstract Extreme precipitation events play a pivotal role in shaping Earth's surface through their influences on hillslope processes (triggering mass‐wasting events) and on transport capacity and dynamics of rivers. This study investigates the impact of such events on sediment transport using Réunion Island as a natural laboratory due to its intense ...
Eric Gayer   +3 more
wiley   +1 more source

A diffusion model to predict spatial and temporal population dynamics of Rift valley fever vectors in Northern Senegal [PDF]

open access: yes, 2010
We have developed an explicit spatial and temporal model to predict the population dynamics and dispersal of the two main mosquito vector species (Aedes vexans and Culex poicilipes) involved in Rift Valley fever virus (RVFV) transmission in Senegal ...
Bégué, Agnès   +9 more
core  

Classification des nuages d’eau sur les images Météosat

open access: yesRevue des Énergies Renouvelables, 2010
Une méthode de classification automatique des nuages a été expérimentée sur les données Météosat, ancienne génération dans les canaux visible et infrarouge, couvrant la zone: (+47°Nord et +19°Sud, +16°Est et -16°Ouest) correspondant au Nord de l’Algérie ...
M. Mesri   +3 more
doaj  

Cartographie thématique du Burundi à l’aide de données géospatiales et d’images satellitaires traitées par les méthodes de géoinformatique

open access: yesGeografares
Cet article présente la mise en œuvre des approches cartographiques intégrées pour la cartographie environnementale du Burundi, Afrique de l’Est. Suivi des différents types de couverture terrestre par télédétection est présenté dans cet article par les ...
Polina Lemenkova
doaj   +1 more source

Apport des techniques d'imagerie pour la caractérisation physique des corridors fluviaux.: Synthèse des connaissances et extraction d'indicateurs. [PDF]

open access: yes, 2008
49 p.Dans le cadre de la mise en place de la Directive Cadre européenne sur l'Eau, un état des lieux des conditions hydromorphologiques s'avère nécessaire afin de renseigner les indicateurs de qualité physique des milieux aquatiques.
Dufour, Simon   +2 more
core   +2 more sources

Comparison of Machine Learning Methods and Ordinary Kriging for Gravimetric Mapping: Application to Yagoua Area (Northern Cameroon)

open access: yesJournal of Engineering, Volume 2025, Issue 1, 2025.
This work focuses on the comparison of a number of machine learning methods (random forest, support vector machine (SVM), and artificial neural networks (ANN)) and ordinary kriging (OK). It is based on OK. Indeed, OK, which is a stochastic spatial interpolation method, predicts the value of a natural phenomenon at unsampled sites, and it is an unbiased
Mfenjou Martin Luther   +5 more
wiley   +1 more source

Observing the SO2 and Sulfate Aerosol Plumes From the 2022 Hunga Eruption With the Infrared Atmospheric Sounding Interferometer (IASI)

open access: yesGeophysical Research Letters, Volume 51, Issue 19, 16 October 2024.
Abstract The Hunga volcano violently erupted on 15 January 2022, producing the largest perturbation of the stratospheric aerosol layer since Pinatubo 1991, despite the initially estimated modest injection of SO2. This study presents novel SO2 and sulfate aerosol (SA) co‐retrievals from the Infrared Atmospheric Sounding Interferometer, and uses them to ...
Pasquale Sellitto   +7 more
wiley   +1 more source

TELEDETECTION ET CARTOGRAPHIE PARTICIPATIVE POUR UNE PLANIFICATION LOCALE DES AMENAGEMENTS ET UNE GOUVERNANCE FONCIERE PLUS DURABLE DANS LA ZONE SUD-OUEST DE LA COMMUNE DE BIBEMI (NORD CAMEROUN).

open access: yesAfrican Journal on Land Policy and Geospatial Sciences
Le processus d’aménagement et de développement local des territoires dans la Commune de Bibemi s’est heurtée à plusieurs défis comme l’insuffisance des terres pour les communautés locales, la superposition des usages, les conflits fonciers et autres ...
NJOUONANG DJOMO HAROLD   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy