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Dissertations / Theses on the topic 'Hydrology, climate variability'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Switanek, Matthew. "Forecasting Climate and Water Resources in the Context of Natural Variability and Climate Change." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/297026.

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The water resources of the Southwestern United States are under significant stress. The historical record of the Colorado River indicates that the commitment allocations (7.5 million acre-feet to both the Upper and Lower Colorado basin states, and 1.5 maf for Mexico) have overestimated the average available streamflow. Compounding the supply problem, the Bureau of Reclamation has projected an average decrease of 9% in the Colorado River streamflow between the years 2011-2060. Improving forecasts of climate and streamflow, at nearly all time scales, is imperative to most effectively manage thes

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2

Liu, Ganming. "Hydrologic Response of Surface Waters in the Prairie Pothole Region to Climate Variability." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313170630.

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3

Parry, Louise Margaret. "Monsoon variability, climate change and impacts on hydrology in the Himalaya." Thesis, University of Bristol, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.715813.

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4

Switanek, Matthew. "Improving Seasonal to Annual Predictions of Climate Variability and Water Availability at the Catchment Scale." Thesis, The University of Arizona, 2008. http://hdl.handle.net/10150/193313.

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In a water-stressed region, such as the southwestern United States, it is essential to improve current seasonal hydroclimatic predictions. Typically, seasonal hydroclimatic predictions have been conditioned by standard climate indices, e.g., NINO3 and PDO. In this work, a methodology called basin-specific climate prediction (BSCP) is proposed to improve hydroclimatic predictions. The method analyzes the statistically unique relationships between sea surface temperatures (SSTs) and a basin's hydroclimate. The oceanic region which maximizes the correlation is subsequently used as a predictor for

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5

Woodhouse, Connie Ann 1957. "Climate variability in the Southwestern United States as reconstructed from tree-ring chronologies." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/191204.

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The primary goal of this research is to gain a better understanding of the spatial and temporal relationships between atmospheric circulation features and winter climate variability in the southwestern United States, and to investigate the variations in these relationships over the past three centuries. A set of six circulation indices is compiled that describes circulation features important to winter climate variability in this region. This set includes pre-existing indices such as the SOI and a modified PNA index, as well as regionally-tailored indices. A network of 88 tree-ring chronologie

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6

McCabe, Gregory J., David M. Wolock, Gregory T. Pederson, Connie A. Woodhouse, and Stephanie McAfee. "Evidence that Recent Warming is Reducing Upper Colorado River Flows." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/626427.

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The upper Colorado River basin (UCRB) is one of the primary sources of water for the western United States, and increasing temperatures likely will elevate the risk of reduced water supply in the basin. Although variability in water-year precipitation explains more of the variability in water-year UCRB streamflow than water-year UCRB temperature, since the late 1980s, increases in temperature in the UCRB have caused a substantial reduction in UCRB runoff efficiency (the ratio of streamflow to precipitation). These reductions in flow because of increasing temperatures are the largest documented

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7

Bhandari, Ranjit. "ANALYZING STREAMFLOW VARIABILITY UNDER CMIP5 PROJECTIONS USING SWAT MODEL." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2363.

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For analyzing the effect of climate change on the streamflow at a regional scale, six General Circulation Models (GCMs) were selected from among eighteen GCMs from the Coupled Model Intercomparison Project (CMIP5) for the Pajaro River Watershed in central California. The 1/8° latitude-longitude resolution bias-corrected and downscaled CMIP5 projections were utilized for an ensemble of GCMs under four Representative Concentration Pathways (RCP2.6, RCP4.5, RCP6.0 and RCP8.5). The twenty-first century is segregated into three time-periods (2016-2039, 2040-2069 and 2070-2099) for comparing the str

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8

Burkhart, John F. "Variability of nitrogen deposition and preservation over the Greenland Ice Sheet." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1069%5F1%5Fm.pdf&type=application/pdf.

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9

Mwangi, Hosea Munge. "Impact of land use change and climate variability on watershed hydrology in the Mara River Basin, East Africa." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/impact-of-land-use-change-and-climate-variability-on-watershed-hydrology-in-the-mara-river-basin-east-africa(54692d94-33ee-40a5-9475-d5f1f7148be3).html.

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Land use change and climate variability are the main drivers of watershed hydrological processes. The main objective of this study was to assess the impact of land use change and climate variability on hydrology of the Mara River Basin in East Africa. Land use maps generated from satellite images were analyzed using the intensity analysis approach to determine the patterns, dynamics and intensity of land use change. Changes in measured streamflow caused separately by land use change and climate variability were separated using the catchment water-energy budget based approach of Budyko framewor

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Mwangi, Hosea Munge. "Impact of Land Use Change and Climate Variability on Watershed Hydrology in the Mara River Basin, East Africa." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-209530.

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Land use change and climate variability are the main drivers of watershed hydrological processes. The main objective of this study was to assess the impact of land use change and climate variability on hydrology of the Mara River Basin in East Africa. Land use maps generated from satellite images were analyzed using the intensity analysis approach to determine the patterns, dynamics and intensity of land use change. Changes in measured streamflow caused separately by land use change and climate variability were separated using the catchment water-energy budget based approach of Budyko framewor

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11

Kigobe, Max. "Modelling the effects of land use change and climate variability on the hydrology of the upper Nile." Thesis, Imperial College London, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555946.

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The River Nile is the second longest river in the world and its basin covers ten African countries including Uganda. In the light of growing human and industrial demand on its ecosystem, especially water resources, the need to support sustainable basin-wide resource management has risen over the recent past. Most economies in the Nile basin are dependent on rain-fed agriculture, which is strongly affected by climate. Therefore, the basin is vulnerable to a number of issues including land use change, climate change and climate variability. Other stress factors include rapid population growth, l

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12

Wigmore, Oliver Henry Wigmore. "Assessing Spatiotemporal Variability in Glacial Watershed Hydrology: Integrating Unmanned Aerial Vehicles and Field Hydrology, Cordillera Blanca, Peru." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471854919.

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13

Kirk, Johnathan. "Hydroclimatic Variability and Contributing Mechanisms during the Early 21st Century Drought in the Colorado River Basin." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1500480359156882.

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14

Entekhabi, Dara 1961. "Landsurface hydrology parameterization for atmospheric general circulation models : inclusion of subgrid scale spatial variability and screening with a simple climate model." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/17246.

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15

Jenkins, Michael Paul. "The impacts of recent and predicted climate variability on the river hydrology and water resources of the Taff catchment, South Wales, UK." Thesis, Swansea University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678594.

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Deal, Eric. "A Probabilistic Approach to Understanding the Influence of Rainfall on Landscape Evolution." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAU012/document.

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Dans cette thèse je travaille sur la relation entre la pluviosité et l’érosion fluviatile en utilisant une approche probabiliste. Je développe une méthodologie indépendante de la moyenne pour caractériser la variabilité de la pluviosité journalière.L’indépendance vis-à-vis de la moyenne permet une comparaison simpleetobjectivedelavariabilitédelapluviosité sous différents régimes climatiques. Elle semontre également utile pour intégrer le concept de variabilité de la pluviosité dans lathéorie que je développe ensuite. J’applique cette approche à la chaine de montagnesHimalayenne en utilisant de

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17

Mbungu, Winfred Baptist. "Impacts of Land Use and Land Cover Changes, and Climate Variability on Hydrology and Soil Erosion in the Upper Ruvu Watershed, Tanzania." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/83863.

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Land alterations including deforestation, unsustainable land management practices and an increase in cultivated areas have occurred in the Upper Ruvu watershed in recent decades threatening water and natural resources. This study, which used a combination of remote sensing techniques, field experiments, watershed monitoring, and modeling was designed to investigate impacts of environmental changes on hydrology and soil erosion. The objectives were to: map the extent of land use and land cover change and its influence on soil erosion; correlate the contribution of climate variability and human

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18

Mwangi, Hosea M., Stefan Julich, Sopan D. Patil, Morag A. McDonald, and Karl-Heinz Feger. "Relative contribution of land use change and climate variability on discharge of upper Mara River, Kenya." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-227067.

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Study region Nyangores River watershed, headwater catchment of Mara River basin in Kenya. Study focus Climate variability and human activities are the main drivers of change of watershed hydrology. The contribution of climate variability and land use change to change in streamflow of Nyangores River, was investigated. Mann Kendall and sequential Mann Kendall tests were used to investigate the presence and breakpoint of a trend in discharge data (1965–2007) respectively. The Budyko framework was used to separate the respective contribution of drivers to change in discharge. Future response o

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Mwangi, Hosea M., Stefan Julich, Sopan D. Patil, Morag A. McDonald, and Karl-Heinz Feger. "Relative contribution of land use change and climate variability on discharge of upper Mara River, Kenya." Elsevier, 2016. https://tud.qucosa.de/id/qucosa%3A30418.

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Study region Nyangores River watershed, headwater catchment of Mara River basin in Kenya. Study focus Climate variability and human activities are the main drivers of change of watershed hydrology. The contribution of climate variability and land use change to change in streamflow of Nyangores River, was investigated. Mann Kendall and sequential Mann Kendall tests were used to investigate the presence and breakpoint of a trend in discharge data (1965–2007) respectively. The Budyko framework was used to separate the respective contribution of drivers to change in discharge. Future response o

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20

Karlsen, Reinert Huseby. "Spatiotemporal streamflow variability in a boreal landscape : Importance of landscape composition for catchment hydrological functioning." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302400.

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The understanding of how different parts of a landscape contribute to streamflow by storing and releasing water has long been a central issue in hydrology. Knowledge about what controls streamflow dynamics across landscapes can further our understanding of how catchments store and release water, facilitate predictions for ungauged catchments, and improve the management of water quality and resources. This thesis makes use of data from the Krycklan catchment in northern Sweden. Streamflow data from 14 catchments (0.12 - 68 km2) with variable landscape characteristics such as topography, vegetat

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21

Barbosa, Humberto. "Vegetation Dynamics Over the Northeast Region of Brazil and Their Connections With Climate Variability During the Last Two Decades of the Twentieth Century." Diss., The University of Arizona, 2004. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_2004_188_sip1_w.pdf&type=application/pdf.

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22

Dessu, Shimelis B. "Water Demand and Allocation in the Mara River Basin, Kenya/Tanzania in the Face of Land Use Dynamics and Climate Variability." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/861.

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The Mara River Basin (MRB) is endowed with pristine biodiversity, socio-cultural heritage and natural resources. The purpose of my study is to develop and apply an integrated water resource allocation framework for the MRB based on the hydrological processes, water demand and economic factors. The basin was partitioned into twelve sub-basins and the rainfall runoff processes was modeled using the Soil and Water Assessment Tool (SWAT) after satisfactory Nash-Sutcliff efficiency of 0.68 for calibration and 0.43 for validation at Mara Mines station. The impact and uncertainty of climate change on

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23

Mwangi, Hosea Munge [Verfasser], Karl-Heinz [Akademischer Betreuer] Feger, Morag [Akademischer Betreuer] McDonald, Karl-Heinz [Gutachter] Feger, and Martin [Gutachter] Volk. "Impact of Land Use Change and Climate Variability on Watershed Hydrology in the Mara River Basin, East Africa / Hosea Munge Mwangi ; Gutachter: Karl-Heinz Feger, Martin Volk ; Karl-Heinz Feger, Morag McDonald." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1150309458/34.

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24

Herrmann, Nicole [Verfasser], Matthias [Akademischer Betreuer] [Gutachter] Zabel, and Kay-Christian [Gutachter] Emeis. "Holocene climate variability and its feedbacks to hydrology and vegetation dynamics in South Africa: Insights from compound-specific stable carbon (d13C) and hydrogen (dD) isotopes / Nicole Herrmann ; Gutachter: Matthias Zabel, Kay-Christian Emeis ; Betreuer: Matthias Zabel." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1132757088/34.

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25

Girons, Lopez Marc. "Modelling Climatic and Hydrological Variability in Lake Babati, Northern Tanzania." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-114009.

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A good understanding of the local and regional water cycle and how it is modified by landscape changes may help policymakers take the pertinent decisions in order to avoid adverse effects of future hydro–climatic changes. This knowledge is of particular interest in the most vulnerable areas of the world such as the African continent. In this context the aim of this project is to model hydrological responses to possible changes in climatic conditions in Lake Babati, northern Tanzania. For this reason a water balance model specially designed to simulate lake level changes was adapted to Lake Bab

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Samuel, Jos Martinus. "Effects of multi-scale rainfall variability on flood frequency : a comparative study of catchments in Perth, Newcastle and Darwin, Australia." University of Western Australia. School of Environmental Systems Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0066.

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Issues arising from climate change and long-term natural climate variability have become the focus of much recent research. In this study, we specifically explore the impacts of long-term climate variability and climate changes upon flood frequencies. The analyses of the flood frequencies are carried out in a comparative manner in catchments located in semiarid-temperate and tropical landscapes in Australia, namely Perth, Newcastle and Darwin, using a process-based derived flood frequency approach. The derived flood frequency analyses are carried out using deterministic rainfall-runoff models

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27

Thakur, Balbhadra. "HYDROLOGIC VARIABILITY WITHIN THE CLIMATE REGIONS OF CONTINENTAL UNITED STATES AND ITS TELECONNECTION WITH CLIMATE VARIABLES." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/dissertations/1844.

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The entropy of all systems is supposed to increase with time, this is also observed in the hydroclimatic records as increased variability. The current dissertation is primarily focused on the hydrologic variability of the hydrologic records in the climate regions across Continental United States. The study evaluated the effects of serial correlation in the historical streamflow records on both gradual trend and abrupt shift in streamflow. The study also evaluated the trend before and after the shift occurrence to validate whether the observed changes in streamflow is a result of long-term vari

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Hamlet, Alan F. "Hydrologic implications of 20th century warming and climate variability in the western U.S. /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10132.

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Mahamat, Nour Abdallah. "Fonctionnement hydrologique, chimique et isotopique du principal affluent du lac Tchad : le système Chari-Logone." Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/190710_MAHAMATNOUR_101y968m4dbkd947sjwa_TH.pdf.

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Les fluctuations spectaculaires d’extension du lac Tchad au cours des dernières décennies ont montré la très grande vulnérabilité de cet écosystème. La surface actuelle du lac a considérablement diminué par rapport à la dernière période humide précédant les années 1980, soulevant la question des rôles respectifs des variations climatiques et des impacts anthropiques sur la réduction de surface du lac Tchad. Cette thèse se propose d'étudier le fonctionnement du fleuve Chari-Logone qui représente jusqu'à 82% des apports en eau au lac à partir de données hydroclimatiques et géochimiques (δ18O, δ2

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Fernandes, Katia de Avila. "The Amazon hydrometeorology climatology, variability and links to changes in weather patterns /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31846.

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Thesis (Ph.D)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2010.<br>Committee Chair: Rong Fu; Committee Member: Marc Stieglitz; Committee Member: Peter Webster; Committee Member: Robert E. Dickinson; Committee Member: Robert X. Black. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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31

Wei, Xi. "Une approche de modélisation pour diagnostiquer les impacts des changements globaux sur l'hydrologie, les sédiments en suspension et le carbone organique dans un bassin tropical asiatique : cas du fleuve Rouge (Chine et Vietnam)." Thesis, Toulouse 3, 2019. http://thesesups.ups-tlse.fr/4685/.

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Les bassins fluviaux asiatiques sont un important contributeur de matières en suspension et de carbone organique vers les océans. Cependant, ces bassins sont soumis à la variabilité climatique et aux activités humaines, modifiant le transport et le devenir de l'eau et des matières associées dans les fleuves, ainsi que les processus biochimiques côtiers. Le Fleuve Rouge est un bassin fluvial représentatif des fleuves asiatiques et joue un rôle important dans l'économie et l'agriculture en Chine et au Vietnam. Cependant, le manque de partage de données entre les pays et la difficulté des observa

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Da, silva Nicolas. "Autour des relations température-précipitations dans la région Euro-Méditerranéenne." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX069/document.

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L’étude du cycle de l’eau est d’une importance cruciale pour toutes les sociétés et plus particulièrement pour celles du pourtour méditerranéen qui souffrent à la fois de sécheresses en été et d’inondations dues à des événements de précipitations extrêmes survenant en automne et en hiver. La température est l’un des principaux facteurs qui gouvernent l’intensité maximale des précipitations via la relation de Clausius-Clapeyron (CC). Cette loi exprime la quantité maximale de vapeur d’eau que peut contenir l’atmosphère à une température donnée. À l’aide de simulations climatiques régionales et d

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O'Hara, Jeffrey Keith. "Water resources planning under climate change and variability." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3259069.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed June 21, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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Batts, Candace. "Hydrologic responses of tallgrass prairie ecosystems in the EcoCELLs to seasonal and interannual climate variability." abstract and full text PDF (free order & download UNR users only), 2005. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1433277.

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35

Gascon, Tania. "Impact de la résolution spatiale et temporelle des entrées pluviométriques pour la modélisation hydrologique en Afrique de l'Ouest et implication dans l'utilisation des produits satellitaires : Etude de cas sur le Bassin de l’Ouémé au Benin." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAU046/document.

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Les zones intertropicales sont caractérisées par des précipitations très variables dans l'espace et le temps qui peuvent produire sur une même région des conditions de sécheresse prolongées entrecoupées d'événements pluviométriques intenses. Ces extrêmes secs et humides peuvent provoquer des pénuries d’eau ou des inondations, mettant en péril des populations souvent très vulnérables aux aléas climatiques. C'est particulièrement le cas de l'Afrique de l'Ouest qui, dans un contexte de conditions sèches dominantes depuis les années 1970, subit ces deux dernières décennies un nombre croissant d'in

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Bomblies, Arne. "The hydrology of malaria : field observations and mechanistic modeling of the malaria transmission response to environmental climatic variability." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/47729.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2009.<br>Includes bibliographical references (leaves 205-222).<br>A coupled HYDrology, Entomology and MAlaria Transmission Simulator (HYDREMATS) has been developed. The model simulates the hydrological and climatological determinants of malaria transmission mechanistically and at high spatialand temporal resolution, and is valid for semi-arid, desert fringe environments where the mosquito Anopheles gambiae s.l. is the dominant malaria vector. This includes much of the most malarious parts of A

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Adallal, Rachid. "Variabilité environnementale des lacs du moyen Atlas marocain : fonctionnement hydrogéochimique, hydrologique et réponse au changement climatique." Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/190503_ADALLAL_832bmr769lk231jud210zypqc_TH.pdf.

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La région sud de la Méditerranée, située à l’interface des climats aride et tempéré, est extrêmement vulnérable au changement climatique avec un fort impact sur les ressources en eaux. Le Moyen Atlas marocain draine les plus grands fleuves du pays et possède plusieurs lacs d’origine tectono-karstique. Ces lacs peuvent être considérés comme des sentinelles des changements hydroclimatiques, à condition de comprendre les mécanismes qui régissent leur fonctionnement hydrologique en lien avec le climat actuel. Cette thèse s’est concentrée sur la caractérisation des fonctionnements hydrogéochimique

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LoDico, Jenna Meredith. "Sub-Centennial Scale Climatic and Hydrologic Variability in the Gulf of Mexico during the Early Holocene." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3867.

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Sediment core MD02-2550 from Orca Basin located in the northern Gulf of Mexico (GOM) provides a high-resolution early Holocene record of climatic and hydrologic changes from ~10.5 to 7 thousand calendar years before present (ka). Paired analyses of Mg/Ca and δ18O on the planktonic foraminifer Globigerinoides ruber (white variety, 250-355 μm) sampled at ~ 20 year resolution were used to generate proxy records of sea surface temperature (SST) and the δ18O of seawater in the GOM (δ18OGOM). The Mg/Ca-SST record contains an overall ~1.5 °C warming trend from 10.5 to 7 ka that appears to track the i

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Ryberg, Karen Renee. "Impact of Climate Variability on Streamflow and Water Quality in the North Central United States." Diss., North Dakota State University, 2015. http://hdl.handle.net/10365/24809.

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Long-term precipitation, temperature, and streamflow records were used to compare changes in precipitation and potential evapotranspiration to changes in runoff within 25 stream basins. Historical changes in the region appear to be more consistent with complex transient shifts in seasonal climatic conditions than with gradual climate change. Annual peak streamflow data were divided into two populations, snowmelt/spring and summer/fall, to test the hypotheses that, because of changes in precipitation regimes, the odds of summer/fall peaks have increased and, because of temperature changes,

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New, Mark George. "Hydrologic sensitivity to climatic variability and change in the south western Cape Province, South Africa." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624376.

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Vischel, Théophile. "Impact de la variabilité pluviométrique de méso-échelle sur la réponse des systèmes hydrologiques sahéliens : modélisation, simulation et désagrégation." Grenoble INPG, 2006. http://www.theses.fr/2006INPG0033.

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Comprendre comment la variabilité du climat interagit avec les modifications de l'hydrologie au Sahel est une nécessité pour anticiper ce que pourraient être les conséquences des changements climatiques futurs dans cette région. On doit pour ce faire relier les scénarios climatiques grande échelle aux bilans d'eau localisés de petits bassins. Cette thèse traite des questions d'échelle qui sont centrales lorsque l'on cherche à forcer des modèles hydrologiques par des sorties de modèles climatiques. Les jeux de données utilisés permettent de documenter le continuum des résolutions spatiale et te

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Bonnet, Rémy. "Variations du cycle hydrologique continental en France des années 1850 à aujourd'hui." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30345.

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Les objectifs de cette thèse sont de caractériser l'évolution du cycle hydrologique continental en France au cours des 150 dernières années, ainsi que d'étudier les mécanismes hydrologiques et climatiques en jeu. Les observations de débits des rivières françaises disponibles sur un siècle ou plus sont rares. Pour la quasi-totalité des autres variables du cycle hydrologique continental, des séries aussi longues sont inexistantes. Pour pallier ces lacunes observationnelles, le recours à la simulation numérique est utilisé. Dans une première partie, des reconstructions hydrométéorologiques dévelo

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Pham-Duc, Binh. "Satellite remote sensing of the variability of the continental hydrology cycle in the lower Mekong basin over the last two decades." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS024/document.

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Les eaux superficielles sont nécessaires à toute forme de vie en tant que parties intégrantes de tout processus de vie sur Terre. Quantifier les eaux de surface et suivre leurs variations est primordial en raison du lien direct qui existe entre les variables hydrologiques et le changement climatique. La télédétection par satellite, de l’hydrologie continental offre l’opportunité unique d’étudier, depuis l’espace, les processus hydrologiques à différentes échelles (régionale et globale). Dans cette thèse, différentes techniques ont été développées afin d’étudier les variations des eaux superfic

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Erazo, Bolivar. "Representing past and future hydro-climatic variability over multi-decadal periods in poorly-gauged regions : the case of Ecuador." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30119.

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Cette thèse évalue des méthodes pour représenter la variabilité spatio-temporelle hydro-climatique passée et future dans les régions peu jaugées. Elle propose une procédure complète et reproductible appliquée à l'Équateur et s'appuyant sur des données hydro-climatiques observées et simulées en vue de représenter la variabilité passée et de projeter l'impact potentiel des changements climatiques sur les écoulements à la fin du 21ème siècle. Un état de l'art a permis d'identifier plusieurs techniques qui ont été intégrées dans une chaîne méthodologique pour obtenir des séries spatio-temporelles

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Grelier, Benjamin. "Aléa climatique et régime hydrologique dans le bassin transnational de la Meuse : co-variabilité, changements possibles et impact sur les débordements." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0243/document.

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Le changement climatique requiert une adaptation de la gestion des extrêmes hydrologiques (crues et étiages). Nos recherches proposent un cadre d’analyse de l’effet du changement climatique sur ces extrêmes dans le bassin transnational de la Meuse, par un chaînage de modèles (atmosphérique – hydrologique - hydraulique) liant le gradient régional de pression à l’écoulement mesuré à l’exutoire d’un bassin. Le forçage climatique est obtenu par l’agrégation de données climatiques historiques et de données multi-modèles issues de l’expérience CMIP5. En forçant deux sous-bassins de la Meuse (situés

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Mesquita, Johanna. "Facteurs de contrôle climatique et géomorphologique de la variabilité hydrologique de bassins versants en substrat carbonaté : Comparaison Haute normandie (FR) et Région d'Austin, Texas (USA)." Caen, 2009. http://www.theses.fr/2009CAEN2031.

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Dans ce travail nous tentons de caractériser la variabilité hydrologique et d’en comprendre les facteurs de contrôle climatique et géomorphologique s. L. Notre approche est basée sur l’analyse comparée de deux régions climatiquement et géomorphologiquement contrastées, la Haute-Normandie (France) et la région d’Austin (USA), au travers de petits bassins versants et de deux grands bassins intégrateurs des fluctuations hydrologiques à l’échelle régionale. L’analyse des séries hydrométéorologiques a mis en évidence: i) une différence majeure entre les deux régions liées à l’influence souterraine,

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Rahmani, Vahid. "Assessing impacts of climate change on Kansas water resources: rainfall trends and risk analysis of water control structures." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/18342.

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Doctor of Philosophy<br>Department of Biological & Agricultural Engineering<br>Stacy L. Hutchinson<br>Precipitation impacts hydrologic structures, agricultural production, water resources management, and recreational activities, all of which significantly affect a state’s economy. Water control structure design is based on the maximum runoff rate resulting from storms with a specific return period and duration. The Rainfall Frequency Atlas (National Weather Service Technical Paper 40, 1961) (TP-40) provided statistical rainfall analysis as the basis for hydrologic structure design until the in

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Ducharne, Agnès. "Le cycle de l'eau : modélisation de l'hydrologie continentale, étude de ses interactions avec le climat." Phd thesis, Université Pierre et Marie Curie - Paris VI, 1997. http://tel.archives-ouvertes.fr/tel-00560615.

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Cette thèse étudie une large gamme de processus liés au cycle de l'eau. La sensibilité du cycle hydrologique global à la représentation de l'hydrologie du sol est analysée à l'aide d'un Modèle de Circulation Générale (MCG). Trois directions sont explorées : l'influence d'un terme de drainage, celle de la capacité en eau du sol, et celle de la variabilité sous-maille de l'hydrologie continentale, à travers une paramétrisation distribuée du ruissellement. La sensibilité de la branche atmosphérique du cycle hydrologique dépend de l'amplitude et du signe des variations d'évaporation continentale m

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Vissin, Expédit Wilfrid. "Impact de la variabilité climatique et de la dynamique des états de surface sur les écoulements du bassin béninois du fleuve Niger." Dijon, 2007. https://tel.archives-ouvertes.fr/tel-00456097.

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Ardoin-Bardin, Sandra. "Variabilité hydroclimatique et impacts sur les ressources en eau de grands bassins hydrographiques en zone soudano-sahélienne." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2004. http://tel.archives-ouvertes.fr/tel-00568025.

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Pour les pays du sous-continent ouest africain soumis depuis une trentaine d'années à un changement climatique sans précédent au XXème siècle, la modélisation de l'impact de la variabilité prévisible du climat sur les ressources en eau est fondamentale pour la planification des aménagements. L'objectif de ce travail est l'utilisation de simulation de pluies et d'évapotranspiration potentielle issues de scénarii climatiques en entrée de modèles hydrologiques, calés pour les grandes rivières d'Afrique de l'Ouest (Sénégal, Gambie, Sassandra) et Centrale (Logone-Chari), afin d'étudier la variabili

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