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Doctoral thesis . 2012
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Doctoral thesis . 2012
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Hydrological and climatic variability in the river basins of the West Siberian Plain (from meteorological stations, model reanalysis and satellite altimetry data)

Authors: Kolmakova, Maria;

Hydrological and climatic variability in the river basins of the West Siberian Plain (from meteorological stations, model reanalysis and satellite altimetry data)

Abstract

Because of high level of swamping in West Siberia and a sparse network of hydrometeorological stations, monitoring of hydrological regime is hindered. In such a situation, it is necessary to involve model reanalysis and satellite altimetry data that ensure the regular coverage of the whole West Siberian Plain, making it possible to supplement field studies and to considerably expand the area of research. This determines the relevance of the thesis. Chapter 1 describes the physic and geographic factors that determined the evolution of the West Siberian Plain; chapter 2 is devoted to methods used in the study; the analysis of trends of air temperature and precipitation is presented in the 3rd chapter as well as the estimation of temporal variability of moisture regime of watersheds from satellite altimetry. The originality of the thesis is to apply satellite altimetry data for estimation of spatiotemporal variability of flooded zones based on the analysis of a reflected signal.

Le caractère fortement marécageux du territoire de la Sibérie Occidentale et la rareté des stations d'observations hydrométéorologiques compliquent le suivi du régime hydrologique des bassins versants. Dans une telle situation, la prise en compte des données de ré-analyse météorologique et d'altimétrie satellitaires, assurant une couverture régulière de l'ensemble du territoire étudié, permet de compléter les observations in situ et d'élargir considérablement la portée des recherches, ce qui détermine la pertinence de ce travail. Le premier chapitre décrit les principaux facteurs physiques et géographiques qui ont déterminé le développement de la zone d'étude ; le deuxième chapitre est consacré aux méthodes d'étude; le troisième chapitre présente les résultats d'analyse de la variabilité des caractéristiques climatiques et hydrologiques dans les bassins fluviaux. L'originalité de cette thèse est d'appliquer une nouvelle approche de la quantité d'eau de la zone étudiée.

Country
France
Keywords

Plaine de Sibérie occidentale, changement climatique, altimétrie satellitaire, [SDE.MCG]Environmental Sciences/Global Changes, backscatter coefficient, West Siberian Plain, satellite altimetry, seasonal and interannual variability, variabilité saisonnière et annuelle, bassins versants, [ SDE.MCG ] Environmental Sciences/Global Changes, [SDE.MCG] Environmental Sciences/Global Changes, climate change, flooded zones, ré-analyse météorologique, [SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology, [SDU.STU.HY] Sciences of the Universe/Earth Sciences/Hydrology, zones inondées, model reanalysis, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, [ SDU.STU.HY ] Sciences of the Universe [physics]/Earth Sciences/Hydrology, river basins, coefficient de rétrodiffusion

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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