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Tesis sobre el tema "River processes"

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1

Tassi, Pablo. "Numerical modelling of river processes: flow and river bed deformation." Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/57998.

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2

VISCONTI, FRANCESCO. "Disclose river morphodynamics processes through experiments." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2502647.

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Rivers’ behavior is increasingly of interest to wide engineering and scientific communities. In fact, fluvial dynamics have an impact on infrastructure and anthropic environments as well as on natural habitats. In addition, the economic values of river as routes of commerce is great, as is the importance of precious minerals deriving from fluvial sedimentary structures. One of the more fascinating river’s peculiarity is the wide range of space and time scales that impact on the overall fluvial dynamics: from the small scales typical of turbulence that are responsible for the motion of s
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3

Pernik, Maribeth. "Mixing processes in a river-floodplain system." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/19514.

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4

Dong, Na. "Border ice processes on the Saint Lawrence River." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28450/28450.pdf.

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Border ice is one of many ice freeze-up processes, but it is discussed only to a limited extent in the literature. Border ice formation can be a precursor for ice jam formation that may restrict navigation and lead to flooding. This master’s thesis is mainly devoted to the research on the border ice on the Saint Lawrence River from Montréal to Québec City. This reach stays artificially open all winter because commercial ships are continuously preventing a full ice cover to form. The traffic also limits the extent of border ice. This study provides key information on ice formation and
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5

Trieu, Hai Q. "Bank erosion processes along the lower Mekong River." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/340011/.

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This project conducts an analysis of bank erosion processes on a large, monsoonaffected river, the Lower Mekong River in Laos. The methodological approach taken was to build integrated models of bank erosion processes at three study sites on the Lower Mekong River in Laos (Friendship Bridge, Ang Nyay and Pakse) to simulate processes of (i) groundwater seepage and pore water pressure evolution, (ii) the effect of this on mass-wasting (using the Geo-slope model) and, (iii) fluvial erosion (using a model adapted from Kean and Smith, 2006ab). In all cases the models were parameterised using measur
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6

Headey, Jonathan Mark. "Modelling of river corridors : modelling urban particulate transport processes." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289714.

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7

Markham, Andrew James. "Flow and sediment processes in gravel-bed river bends." Thesis, Queen Mary, University of London, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308275.

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8

Phillips, Zachary Rockford. "Holocene Postglacial Fluvial Processes and Landforms in Low Relief Landscapes." Diss., North Dakota State University, 2020. https://hdl.handle.net/10365/32036.

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Postglacial rivers are part of the relatively young low-relief landscape system left behind by glaciers. Over time, postglacial rivers are susceptible to both minor and major channel planform changes as the Earth and its newly exposed rivers adjust to new isostatic and geomorphic equilibriums. Those planform changes result in topographic features that are well preserved among the largely unaltered landscape and offer opportunities to learn about the processes that create them. This work focuses on those minor and major planform changes and the resulting landforms, with a focus on processes eff
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9

Allread, Tyler M. "Channel Narrowing of the Green River near Green River, Utah: History, Rates, and Processes of Narrowing." DigitalCommons@USU, 1997. https://digitalcommons.usu.edu/etd/6525.

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Previous scientific research has documented channel narrowing on the Green River near Green River, Utah, but the exact timing, rates, and causal mechanisms of that narrowing have been the source of disagreement in the scientific literature. This thesis demonstrates that the Green River has narrowed in two separate periods during the last 100 years. The narrowing is driven primarily by changes in the hydrologic regime and not by the invasion of saltcedar. The channel narrowed between 1930 and 1938, when a shift from wetter than normal conditions to a period of draught led to a reduction in rive
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10

Moretto, J. "Linking River Channel Forms and Processes in Gravel Bed Rivers: Time, Space, Remote Sensing and Uncertainty." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423802.

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The “modern” fluvial morphology, is the results of a series of events characterized by both natural and human dynamics. Recognizing the process responsible for particular morphology is not a simple analysis, it can be more difficult or impossible if the data collected have too low resolution or too high uncertainty in relation to the spatial and temporal scale assessed. This work aims to analyse and optimize different data and collection methods, derived from different time, space and resolution scales, with a good equilibrium between time-consuming and results at low uncertainty. Different
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11

Ansari, Saber. "Automated Monitoring of River Ice Processes from Shore-based Imagery." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35180.

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Ice plays an important role in hydraulic processes of rivers in cold regions such as Canada. The formation, progression, recession and breakup of river ice cover known as river ice processes affect river hydraulics, sediment transport characteristics as well as river morphology. Ice jamming and break up are responsible of winter flash floods, river bed modification and bank scour. River ice cover monitoring using terrestrial images from cameras installed on the shores can help monitor and understand river ice processes. In this study, the benefits of terrestrial monitoring of river ice using
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12

Harris, N. M. "Spatial Changes in Bank Erosion Processes in the River Severn." Thesis, University of Birmingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496467.

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13

Bailey, Eva Machelor. "Processes Affecting Macroalgal-Seagrass Dynamics in the York River, Virginia." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539617969.

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14

Potucek, Mark J. "Channel Change Processes and Rates in a Mixed Alluvial-Bedrock River, Huron River, North-Central Ohio (U.S.A.)." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1498841176288786.

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15

Bigelow, Sarah Grace, and University of Lethbridge Faculty of Arts and Science. "Impacts of flow augmentation on river channel processes and riparian vegetation." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/649.

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The Little Bow River Project was implemented in 2003 and includes Alberta’s newest dam. The Project involves tripling the diversion of water from the Highwood River to the Little Bow River and subsequently storing the water in the Twin Valley Reservoir. This MSc Thesis provided part of the environmental monitoring for that Project and particularly investigated the impacts of augmented flows on the river channel and riparian vegetation along the upper reach of the Little Bow River. An initial component of the long-term study was to determine the existing associations between fluvial geomorphic
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16

Burge, Leif M. "Meandering river eddy accretions, sedimentology, morphology, architectural geometry, and depositional processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq24650.pdf.

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17

REFAAT, Hossam El-din A. A. "THE FORMATION AND REDUCTION PROCESSES OF RIVER DELTAS AND THEIR CONTROL." Kyoto University, 1990. http://hdl.handle.net/2433/131967.

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18

Pappalardo, Giusy. "Starting from the River Again. Community Processes to Regenerate Spoiled Ecosystems." Doctoral thesis, Università di Catania, 2014. http://hdl.handle.net/10761/1630.

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Rivers and their ecosystems are a vital core of human societies: not only do they provide resources, in particular for rural economies, they also generate symbolic meanings in different cultures around the world. The Dissertation focuses on how watershed planning and management can be enhanced with the purpose of improving the relationship of human communities and natural ecosystems. This work is located within the growing debate, in the field of environmental planning, focused on the necessity to integrate scientific knowledge with a broader understanding of how social-ecological system works
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19

Jung, Kwansue 1959. "The comparative sediment processes in channel and overbank." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277205.

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The question posed in this study is why alluvial soil on a floodplain is finer than the bed material of the river that supplied the sediments deposited to form the floodplain. A schematic, simplified river/floodplain system is used in an approximate analysis to find the size distribution of the floodplain soil. It is assumed that the stable limiting condition is a suspended load in the floodplain flow of the same concentration and composition as the sediment load in that portion of the river channel flow above the level of the floodplain. It was found that floodplain soil should be finer than
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20

Wu, Yiping. "Investigation of integrated terrestrial processes over the East River basin in South China." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43085799.

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21

Tsou, Ching-Ying. "Landscape Evolution by Fluvial Processes and Gravitational Slope Processes in Tectonically Active Mountains in Taiwan." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188494.

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22

Holt, Tom. "The effect of proposed Soviet river diversions on Arctic Sea ice processes." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278089.

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23

Ashbridge, David A. J. "Processes of river bank erosion and their contribution to the suspended sediment load of the River Culm, Devon, England." Thesis, University of Exeter, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253515.

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24

Carini, Giovannella, and n/a. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050113.081250.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri
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25

Carini, Giovannella. "Effects of Contemporary and Historical Processes on Population Genetic Structure of Two Freshwater Species in Dryland River Systems (Western Queensland, Australia)." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367070.

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Arid and semiarid river systems in Western Queensland, Australia, are characterized by the unpredictable and highly variable nature of their hydrological regimes as a result of the episodic nature of rain events in the region. These dryland rivers typically experience episodic floods and extremely low or no flow periods. During low or no flow periods, water persists only in relatively wide and deep sections of the river channels, which are called 'waterholes'. These isolated waterholes serve as refugia for aquatic species during protracted intervals between floods. In such discontinuous riveri
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26

Budi, Santoso Eko. "Tidal anomalies at river entrances and the physical processes which generate them /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17707.pdf.

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27

Piqué, Altés Gemma. "Analysis of hydro-sedimentary processes and impacts affecting river basins and channels." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/405448.

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Aquesta tesi estudia la dinàmica hidro-sedimentària de rius mediterranis, tant ‘naturals’ com regulats per preses. Amb aquest objectiu, s’ha realizat un estudi a escala multi-temporal i multi-espacial, que inclou treball de camp en trams de riu representatius, l’anàlisi de dades a nivell de conca, i experiments en canals de laboratori. L’alteració hidrològica aigües avall dels embassaments s’ha observat a diferents escales temporals, afectant notablement la magnitud i freqüència de les crescudes. A nivell sedimentari, s’observa un dèficit de sediments, fet que facilita l’establiment de biofilm
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28

Bever, Aaron J. "Physical Processes Behind Delta Propagation and Flood Layer Dynamics, Po River, Italy." W&M ScholarWorks, 2006. http://www.vims.edu/library/Theses/Bever06.pdf.

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29

Carver, Robert. "Inferring hydrogeologic processes with distributed temperature sensing in Indian River Bay, Delaware." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114580.

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The interaction between coastal aquifers and estuaries governs many important ecological and water quality processes. The purpose of this research is to use distributed temperature sensing (DTS) in the Indian River Bay estuary, Delaware, to detect differences in variance and mean of temperature at the sediment-water interface. DTS uses the scatter of laser light in a fibre optic cable as a means to repeatedly measure temperature to 0.1˚C at 1m intervals along the length of the cable. Low variances in temperature are interpreted as being the result of the moderating thermal influence of ground
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30

Mvandaba, Vuyelwa. "Understanding and quantifying channel transmission loss processes in the Limpopo River Basin." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/63797.

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Water availability is one of the major societal issues facing the world. The ability to understand and quantify the impact of key hydrological processes on the availability of water resources is therefore integral to ensuring equitable and sustainable resource management. A review of previous hydrological studies conducted in the Limpopo River Basin has revealed a gap in the understanding of surface water-groundwater interactions, particularly channel transmission loss processes. These earlier studies, focused largely on the Limpopo River’s main stem, have attributed the existence of these str
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31

Niu, Jun, and 牛俊. "A comprehensive analysis of terrestrial hydrological processes over the Pearl River basin in South China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45587462.

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32

Bicudo, Tacio Cordeiro. "Estudo da formação da bacia hidrográfica do rio Amazonas através da modelagem numérica de processos tectônicos e sedimentares." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-04062018-143103/.

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A bacia hidrográfica do rio Amazonas abrange uma área de 6 × 106 km2 da região norte da América do Sul. O seu canal mais longo, com quase 7.000 km tem origem nos Andes peruanos e cruza todo o continente até chegar na foz, no Atlântico Equatorial. Apesar dos diversos esforços científicos, os processos que guiaram a evolução da paisagem na Amazônia ainda são discutidos, assim como a data do estabelecimento dessa grande bacia hidrográfica que culminou com a forma¸cao do rio Amazonas como um rio transcontinental. O presente trabalho teve como objetivo estudar como se deu a evolução da paisagem na
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33

McEwan, Robert. "Interdisciplinary study of hydrodynamic and biogeochemical processes of a large-scale river plume." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/1551.

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This research has utilised the Massachusetts Institute of Technology gen- eral circulation model (MITgcm) along with observations taken as part of the River In uences on Shelf Ecosystems (RISE) study to investigate the dynamic processes associated with the Columbia River plume at different temporal and spatial scales. Firstly, a high resolution ( x= y=25 m) investigation of the near-field plume was undertaken using the fully non-hydrostatic mode of the MITgcm. This resulted in the reproduction of a detailed inner plume as well as a series of radiated internal waves. In addition to first mode i
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34

Marda, Saurabh. "Effect of Ozonation and BAC Filtration Processes on Monochloramine Demand." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/10577.

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Although the kinetics and mechanism of monochloramine decay in organic-free waters are relatively well understood, those in natural waters are not, due to exceedingly complex and poorly defined interactions of monochloramine with natural organic matter (NOM) and particles. Ozonation followed by a biologically activated carbon (BAC) filtration is a commonly practiced process option that affects the characteristics of both dissolved and particulate constituents in the water. However, how these changes in water constituents affect stability of the residual disinfectant, or monochloramine in part
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35

Waltner, Mason. "Quantifying Legacy Sediment in the Upper Charles River Watershed, Massachusetts." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:108052.

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Thesis advisor: Noah Snyder<br>While it has been shown that extensive sedimentation in historic millponds has greatly affected streams in the Mid-Atlantic Piedmont region (Walter and Merritts, 2008), much less is known about the phenomenon in the heavily dammed areas of post-glacial New England. Some research has found similar deposits behind breached historic dams in the Sheepscot River watershed in mid-coast Maine, but at a smaller scale than those seen in the Mid-Atlantic region (Strouse, 2013; Hopkins, 2014). I attempt to further explore millpond sedimentation in New England by quantifying
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36

Schneider, Suzanne Zvalaren Willey Joan D. "Mercury sources and cycling processes in the Cape Fear River estuary, North Carolina." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2906.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2010.<br>Title from electronic title page (viewed Jun. 23, 2010). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Marine Sciences." Discipline: Marine Sciences; Department/School: Marine Sciences.
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37

Cohn, Teresa Helene. "Settlement, identity and environment: understanding processes of vegetation change along the Wind River." Diss., Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/cohn/CohnT1210.pdf.

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Contemporary research concerning wildlands and wildlife of the American West increasingly calls for greater complexity in understanding human-environmental relationships. This dissertation investigates a culturally diverse portion of Greater Yellowstone in order to complicate these dialogues. It explores a riparian corridor along the Wind River, a region permanently settled by Eastern Shoshone, Northern Arapaho and Euro-American residents in the late 1800s and early 1900s. Using the Wind River Basin as a case study, this research observes the landscape through three different lenses: settlemen
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38

Wu, Yiping, and 吴一平. "Investigation of integrated terrestrial processes over the East River basin in South China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43085799.

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39

Hubbard, Christopher George. "Acid mine drainage generation and transport processes in the Tinto River, SW Spain." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440101.

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40

Hortobágyi, Borbála. "Multi-scale interactions between riparian vegetation and hydrogeomorphic processes (the lower Allier River)." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAL001/document.

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Dans les écosystèmes, tels que les rivières, les marais salés, les mangroves, les dunes côtières, qui sont exposés à des flux hydrogéomorphologiques fréquents et réguliers (c’est-à-dire à des perturbations physiques), des rétroactions se mettent en place entre la géomorphologie (eau, sédiments et formes fluviales) et les plantes (par exemple Populus nigra L., Salix alba L., Salix purpurea L. dans les rivières). L’établissement de la végétation est contrôlé par des processus hydrogéomorphologiques qui, en retour, sont modulés par la végétation. De telles rétroactions contrôlent la dynamique des
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41

Grove, James Robin. "Downstream change in the processes of riverbank erosion along the River Swale, UK." Thesis, University of Birmingham, 2001. http://etheses.bham.ac.uk//id/eprint/4429/.

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This study was designed to test the hypothesis that riverbank erosion processes altered with increasing distance from a river source. The River Swale, northern England, was monitored at nine sites throughout its 109-km length, from December 1995 – March 1998. Erosion pins, bank-edge surveying, and Photo-Electronic Erosion Pins (PEEPs) were used to determine rates and timings of erosion. The rates were compared against a range of environmental variables based on temperature, river stage, and precipitation at 14-day intervals for erosion pins and 15-minute intervals for PEEPs. This allowed proce
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42

Carpenter, Deborah A. "Testing the river continuum concept exploring ecological processes in the Wheeling Creek Watershed /." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1879.

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Thesis (M.A.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains v, 75 p. : ill., maps (some col.). Includes abstract. Includes bibliographical references (p. 53-57).
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43

Josko, Troselj. "FLUVIAL INFLUENCE ON ESTUARINE SEDIMENT TRANSPORT PROCESSES AND LINKAGE OF ITS OUTFLOW DATA TO COASTAL MODELING." Kyoto University, 2016. http://hdl.handle.net/2433/217745.

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44

Arbuthnott, Alison Gail. "An investigation into the effects of catchment processes on the water quality of southern chalk rivers." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367967.

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The physical, chemical and biological characteristics of five southern English chalk streams in neighbouring catchments were investigated seasonally over two years. At the catchment scale, the five chalk rivers had very similar physio-chemical properties. Differences between years and between seasons were much greater than those between rivers or within-river longitudinal differences. Elevated inorganic nutrient concentrations, relative to reportedly 'pristine' systems, indicated some degree of catchment water quality deterioration in all five rivers. The effect of physical habitat degradation
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45

Young, Adam. "Sediment Processes Influencing the Coastline of Kouchibouguac National Park, New Brunswick." Thesis, Fredericton: University of New Brunswick, 2012. http://hdl.handle.net/1882/35658.

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Parks Canada focuses its tourism and conservation efforts in Kouchibouguac National Park along the park's diverse coastline made up of a variety of sensitive ecosystems including salt marshes, stream estuaries and a shifting barrier island lagoon system. The dynamic sediment processes in the park are not fully understood, making it difficult for Parks Canada to make informed decisions as sea-level rise in the region accelerates. In this study, extensive field data were collected in two sediment zones bordering the Kouchibouguac Lagoon. Stream data were collected and used to estimate the monthl
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46

Duffy, B. "Phase transfer processes affecting the chemistry of iron and manganese in river-estuary systems." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356766.

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47

Colvin, Jessica. "Site Formation Processes and Bone Preservation Along the Trinity River Basin, North Central Texas." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc500040/.

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This thesis presents the results of geoarchaeological investigations of several archaeological sites along the Elm Fork of the Trinity River in north central Texas. Archaeological data recorded from mitigation excavations in Denton and Cooke counties were analyzed to understand the geologic impacts on faunal preservation resulting from site formation processes. The faunal assemblages are highly fragmented, even in settings known for good preservation. A combined approach using geoarchaeological and taphonomic techniques was implemented to examine how fragmentation, evidence of soil weathering
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48

Davis, Edgar V. "Circulation and transport processes for the Pocomoke River a tributary to partially mixed estuary /." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3264.

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Thesis (M.S.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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49

Mulungu, Deogratias Maganga Mohamed. "Development of a physically based model of hydrological processes in forested mountainous river basins." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148847.

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50

Vericat, Querol Damià. "Sediment transport and processes in a highly regulated river. The lower Ebro, NE Iberian Peninsula." Doctoral thesis, Universitat de Lleida, 2005. http://hdl.handle.net/10803/8231.

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Aquesta tesi estudia el transport de sediment i els processos fluvials associats al tram baix del riu Ebre al llarg de dos anys hidrològicament mitjans (2002-2004). El transport de sediment, que inclou tant la càrrega de fons com el sediment en suspensió, s'ha mesurat aigües amunt i avall del complex d'embassaments Mequinenza-Riba-roja-Flix. Els canvis morfològics i granulomètrics s'han analitzat aigües avall de la presa de Flix. La càrrega mitjana anual de sediment aigües amunt de les preses és de 1,64·106 tones, de les quals un 99% ho són en suspensió. El transport mig anual aigües avall del
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