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Dissertations / Theses on the topic 'Sediment export'

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1

Mullenbach, Beth Lee. "Characterization of modern off-shelf sediment export on the Eel margin, Northern California /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/10969.

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2

Stewart, George Russell. "Water quality improvements in the Upper North Bosque River watershed due to phosphorous export through turfgrass sod." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1428.

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The Upper North Bosque River (UNBR) watershed is under a Total Maximum Daily Load (TMDL) mandate to reduce Phosphorus (P) due to excess nutrients in the watershed. To address these problems, Texas A&M University researchers have developed a turfgrass sod Best Management Practice (BMP) to remove excess nutrients from impaired watersheds. Turfgrass harvest of manure fertilized sod removes a thin layer of topsoil with most of the manure applied P. Plot and field scale research has demonstrated the effectiveness of turfgrass to remove manure phosphorus (P). In order to assess the impact of the tur
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3

Carter, Samantha Cassie. "Improving our understanding of the marine barium cycle and constructing a new archive of erosion and sediment transport." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1593602009469204.

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4

Hurtado, Shanty Navarro. "A influência da implantação de um terminal aquaviário na dinâmica sedimentar local da Baía de Guanabara." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/21/21133/tde-23092009-103654/.

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A Baía da Guanabara vem sofrendo alterações na sua bacia de drenagem desde o início do século XIX que resultaram em acentuada degradação ambiental. O presente trabalho discute a influência da implantação de um Terminal Aquaviário de Gás Natural Liquefeito (GNL) na Baía, e suas possíveis influências nos processos de sedimentação local e/ou re-disponibilização de sedimentos de fundo, e possíveis contaminantes associados. Os resultados dos modelos matemáticos mostram que as maiores velocidades das plumas termicas que atingem o fundo são em média 0,46 m3/s para as simulações de verão e 0,47 m3/s
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5

Song, Layheang. "Usage des terres, ruissellement de surface, érosion des sols : analyse multi-échelles de l'impact des plantations de teck dans un agro-écosystème montagneux tropical humide." Electronic Thesis or Diss., Toulouse 3, 2021. http://www.theses.fr/2021TOU30188.

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L'érosion des sols est pourtant connue comme l'un des problèmes environnementaux les plus préoccupants au monde. L'érosion des sols est particulièrement et de plus en plus entraînée par les activités anthropiques dans le cadre du changement climatique. En RDP lao, un pays tropical, l'érosion des sols est due de manière significative à une gestion inappropriée des terres sur les terrains en pente. Le Houay Pano, un bassin versant cultivé du nord de la RDP lao, est exposé à l'érosion des sols, en particulier après la conversion de la culture itinérante en plantation de teck. La mauvaise gestion
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6

Burton, Andrew Mark. "Expert systems to assist in the redevelopment of contaminated land." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326779.

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7

Hemingway, Jordon Dennis. "Understanding terrestrial organic carbon export : a time-series approach." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/109054.

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Thesis: Ph. D., Joint Program in Chemical Oceanography (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 169-190).<br>Terrestrial organic carbon (OC) erosion, remineralization, transport through river networks, and burial in marine sediments is a major pathway of the global carbon cycle. However, our ability to constrain these processes and fluxes is largely limited by (i) analytical capability and (ii) tempo
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8

Causse, Jean. "Temporalité des transferts de nutriments dans les bassins versants à algues vertes." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1B012/document.

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En Bretagne, les « marées vertes » sont récurrentes depuis le début des années 70 et occupent une place importante dans le débat public en terme sanitaire, politique et économique. Lors de cette thèse, une large revue bibliographique a été réalisée sur l’export d’azote et une méthodologie innovante a été mise en place afin d’étudier la variabilité spatio-temporelle de l’export de nutriments dans 2 bassins versants à algues vertes à une échelle intra-annuelle et pendant des évènements extrêmes (évènements pluvieux, période touristique de basses eaux,…). Les bassins versants sélectionnés pour le
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9

Emmermann, Peter. "Mineralogy, geochemistry and microfacies of late Quaternary periplatform sediments carbonate export cycles and secondary processes - Sanganeb Atoll and Abington Reef, Sudan, Central Red Sea = Mineralogie, Geochemie und Mikrofazies spätquartärer Periplattformsedimente /." [S.l. : s.n.], 2000. http://e-diss.uni-kiel.de/diss%/d364.pdf.

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10

Butler, David Michael. "Runoff, sediment, and nutrient export from manured riparian pasture as affected by simulated rain and ground cover." 2004. http://www.lib.ncsu.edu/theses/available/etd-05312004-233542/unrestricted/etd.pdf.

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11

Chen, Pen-Yuan, and 陳本源. "Explore the n-alkane biomarkers in lake sediment." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8cguwb.

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碩士<br>國立中正大學<br>應用地球物理研究所<br>103<br>One hundred - fifteen samples from the sediment core were analyzed for aliphatic hydrocarbons (AHCs), C14-C35 n-alkanes, of Dahu Lake, Yilan, Taiwan. The sediment samples were Soxhlet extracted and GC-FID analyzed. The total n-alkanes (C14-C35) concentrations averaged 16.1± 8.0 μg/g. The average concentrations of long chain n-alkanes (C26-C32) and short chain n-alkanes (C14-C20) were 9.11± 5.17 μg/g and 2.50±1.33 μg/g, respectively. The CPI L of 3.79±1.01 indicated biogenetics feature of the major terrestrial plant sources. The CPIS of 0.74± 0.33 (0.10~1.94
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12

Chan, Taylor, and 陳偉德. "The study of Non Point Source Pollution Exports from Construction Sites and the Removal of Sediment Basin BMP." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/65752259203498447660.

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碩士<br>國立成功大學<br>環境工程學系<br>84<br>The study was conducted with the objective of estimating the sediment yield of constraction active,and the removal of the sediment in runoff when a storm occurs in order to design a sediment basin. A rainfall simulator was used inthis study.Four plots were selected for this research.There are including Tainan city Huw Wai Lai,the Tainan ramp of the south second free way of Kung Mung set and the west bay highway construction sites. The result shows that the s
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13

Ning, Fulong, Guosheng Jiang, and Ling Zhang. "COMPREHENSIVE UTILIZATION OF GEOTHERMAL AND SOLAR ENERGY TO EXPLOIT GAS HYDRATES BURIED IN OCEANIC SEDIMENTS." 2008. http://hdl.handle.net/2429/1063.

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How to exploit and make use of natural gas hydrates in oceans will weigh much in the future researches. Unlike the oil or gas reservoirs, the distributions of natural gas hydrate are very complicated and don’t congregate massively in oceanic sediments. Besides, factors such as seafloor geohazards and climate must be taken into account, which makes it much more difficult and complicated to exploit oceanic gas hydrates than conventional oil or gas. Nowadays neither of such methods as thermal stimulation, depressurization, inhibitor injection, carbon dioxide replacement and mixing exploitation et
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14

Emmermann, Peter [Verfasser]. "Mineralogy, geochemistry and microfacies of late Quaternary periplatform sediments : carbonate export cycles and secondary processes - Sanganeb Atoll and Abington Reef, Sudan, Central Red Sea = Mineralogie, Geochemie und Mikrofazies spätquartärer Periplattformsedimente / vorgelegt von Peter Emmermann." 2000. http://d-nb.info/971927898/34.

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15

Wilson, Derek Alan. "A Dredging Knowledge-Base Expert System for Pipeline Dredges with Comparison to Field Data." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8653.

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A Pipeline Analytical Program and Dredging Knowledge{Base Expert{System (DKBES) determines a pipeline dredge's production and resulting cost and schedule. Pipeline dredge engineering presents a complex and dynamic process necessary to maintain navigable waterways. Dredge engineers use pipeline engineering and slurry transport principles to determine the production rate of a pipeline dredge system. Engineers then use cost engineering factors to determine the expense of the dredge project. Previous work in engineering incorporated an object{oriented expert{system to determine cost and scheduling
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