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Dissertations / Theses on the topic 'Water column'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Verspecht, Florence. "Temporal dynamics of the coastal water column." University of Western Australia. School of Environmental Systems Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0097.

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Field measurements and numerical modelling of the shallow coastal waters offshore in south-western Australia were used to describe changes in the water column's vertical structure and the biological response on temporal scales of the order of hours and days. A cycle of chlorophyll a concentration, primary production, and photosystem II function on a diel timescale, which was related to changes in the solar irradiance and thermal structure, was identified. The diel cycle included (1) vertically well-mixed (or weakly linear) conditions in density and chlorophyll a early in the morning, resulting

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2

Coltman, Kenna Maria. "Water table management effects on water quality: a soil column study." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1195165287.

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3

Coltman, Kenna Marie. "Water table management effects on water quality : a soil column study /." Connect to resource, 1992. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195165287.

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4

Diedrich, Hannes [Verfasser]. "Observation of Total Column Water Vapour / Hannes Diedrich." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1109790406/34.

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5

Munson, Kathleen M. (Kathleen May). "Transformations of mercury in the marine water column." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87513.

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Thesis: Ph. D., Joint Program in Oceanography (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Methylation of mercury (Hg) in the marine water column has been hypothesized to serve as the primary source of the bioaccumulating chemical species monomethylmercury (MMHg) to marine food webs. Despite decades of research describing mercury methylation in anoxic sediments by anaerobic bacteria, mechanistic studies of

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6

Magagna, Davide. "Oscillating water column wave pump : a wave energy converter for water delivery." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/349009/.

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The research presented in this dissertation investigates the development and the performances of a new type of Wave Energy Converter (WEC) aimed to provide water delivery and energy storage in the form of potential energy. The Oscillating Water Column Wave Pump (OWCP) concept was proposed and tested through a series of experimental investigations supported by scientific theory. The OWCP was developed after an extensive study of the existing wave energy technology available, from which it emerged that the Oscillating Water Column (OWC) device could be further implemented for water delivery purp

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7

Wheeler, Jeanette Danielle. "Behavioral responses of invertebrate larvae to water column cues." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103337.

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Thesis: Ph. D., Joint Program in Biological Oceanography (Massachusetts Institute of Technology, Department of Biology; and the Woods Hole Oceanographic Institution), 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 139-150).<br>Many benthic marine invertebrates have two-phase life histories, relying on planktonic larval stages for dispersal and exchange of individuals between adult populations. Historically, larvae were considered passive drifters in prevailing ocean currents. More recently, however, the paradigm has shifted toward active larval beh

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8

Kooverji, Bavesh. "Pneumatic power measurement of an oscillating water column converter." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86662.

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Thesis (MScEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: A measurement device was developed to accurately determine the pneumatic power performance of an Oscillating Water Column (OWC) model in a wave flume. The analysis of the pneumatic power is significant due to the wave-topneumatic energy being the primary energy conversion process and where the most energy losses can be expected. The aim of the research study is to address the accurate pneumatic power measurement of unsteady and bidirectional airflow in OWC model experiments. The two fundamental measurements required fo

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9

Perdigão, José Nuno Bebiano Mesquita de Azeredo. "Reactive-control strategies for an oscillating-water-column device." Phd thesis, Instituições portuguesas -- UTL-Universidade Técnica de Lisboa -- IST-Instituto Superior Técnico -- -Departamento de Engenharia Mecânica, 1998. http://dited.bn.pt:80/29667.

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10

Falconer, Haley Ryanne Watson. "Column filter studies phosphorus removal using biogenic iron oxides /." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Fall2009/H_Falconer_100709.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, December 2009.<br>Title from PDF title page (viewed on Jan. 12, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 52-53).

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11

Horko, Michael. "CFD optimisation of an oscillating water column wave energy converter." University of Western Australia. School of Mechanical Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0089.

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Although oscillating water column type wave energy devices are nearing the stage of commercial exploitation, there is still much to be learnt about many facets of their hydrodynamic performance. This research uses the commercially available FLUENT computational fluid dynamics flow solver to model a complete OWC system in a two dimensional numerical wave tank. A key feature of the numerical modelling is the focus on the influence of the front wall geometry and in particular the effect of the front wall aperture shape on the hydrodynamic conversion efficiency. In order to validate the numerical

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12

Harikrishanan, M. "Flow and water column structure at the Herbridean shelf-edge." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265238.

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13

Martins-rivas, Hervé. "Power extraction from an oscillating water column along a coast." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45257.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008.<br>Includes bibliographical references (p. 121-123).<br>For reasons of wave climate, geography, construction, maintenance, energy storage and transmission, some devices for extracting energy from sea waves will likely be installed on the coast. We study here the specific case where an Oscillating Water Column (OWC) is attached to the tip of a long breakwater. A three-dimensional numerical model of a skeletal geometry of the the Foz do Douro breakwater is developed in order to determine the respon

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14

Hick, Peter T. "Determination of water column characteristics in coastal environments using remote sensing." Thesis, Curtin University, 1997. http://hdl.handle.net/20.500.11937/2515.

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This thesis illustrates the specific aspects that influence or limit the application of remotely-sensed data for information retrieval from coastal marine, estuarine and riverine environments. The thesis is drawn principally from ten separate studies and is divided into discrete sections, or experiments, that provide an understanding of the fundamental aspects of the effects of the atmosphere, water surface, water column and bottom on sensor-received reflected signal.The results show the importance of precise calculation of acquisition parameters and the absolute importance of relevant referen

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15

Morrison, Iain George. "The hydrodynamic performance of an oscillating water column wave energy converter." Thesis, University of Edinburgh, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493723.

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16

Close, Hilary Gwyneth. "Size-related Isotopic Heterogeneity in Lipids from the Marine Water Column." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10487.

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Microbes, including Bacteria, are globally important mediators of elemental transformations in the marine water column, but not until recently has their biomass been suggested to contribute significantly to carbon export flux. Here I characterize lipid and carbon isotopic signatures in marine particulate organic matter (POM) explicitly at microbial size scales, and I quantitatively explore how these signatures are transferred down the water column. In the North Pacific Subtropical Gyre (NPSG) an isotopically-enriched pool of submicron POM appears to dominate export to mesopelagic depths, suppo

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17

Leitch, John Gaston. "Productivity analysis and optimization of oscillating water column wave power devices." Thesis, Queen's University Belfast, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329360.

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18

Uys, Ehbenezer Chris. "Entrainment in an air/water system inside a sieve tray column." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4237.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Mass transfer efficiency in distillation, absorption and stripping depends on both thermodynamic efficiency and hydrodynamic behaviour. Thermodynamic efficiency is dependent on the system kinetics while hydrodynamics is the study of fluid flow behaviour. The focus of this thesis is the hydrodynamic behaviour in tray columns, which affects entrainment. In order to isolate hydrodynamic behaviour from the thermodynamic behaviour that occurs inside sieve tray columns, investigations are conducted und

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19

Minns, Julian. "Comparative performance of a novel oscillating water column wave energy converter." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10042.

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This thesis presents research which shows that a helically configured Oscillating Water Column (OWC) could deliver improved performance compared to a conventional tube OWC, whilst saving a significant amount of draft. It is anticipated that savings in the deployment costs for this compact machine will outweigh any additional manufacturing costs. In order to prove the benefits of the helical concept, its performance relative to a conventional plain tube OWC was investigated in detail using scaled physical models. These models evolved during the course of the study, and refined models were devel

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20

Williams, N. L., L. W. Juranek, K. S. Johnson, et al. "Empirical algorithms to estimate water column pH in the Southern Ocean." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/614732.

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Empirical algorithms are developed using high-quality GO-SHIP hydrographic measurements of commonly measured parameters (temperature, salinity, pressure, nitrate, and oxygen) that estimate pH in the Pacific sector of the Southern Ocean. The coefficients of determination, R-2, are 0.98 for pH from nitrate (pH(N)) and 0.97 for pH from oxygen (pH(Ox)) with RMS errors of 0.010 and 0.008, respectively. These algorithms are applied to Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) biogeochemical profiling floats, which include novel sensors (pH, nitrate, oxygen, fluorescence, a

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21

Liptak, Michael A. "Water Column Productivity, Calcite Precipitation, and Phosphorus Dynamics in Freshwater Marshes." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1364288585.

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22

Williams, Joshua Bruce. "Algorithm Development for Column Water Vapor Retrieval Using the SAM Sensor." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/59.

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To understand and model the energetics of the Sun-Earth connection, measurements of specific atmospheric molecules are beneficial. The objective is to formulate an algorithm to derive temporally varying atmospheric water vapor concentrations as functions of altitude, latitude, and longitude from solar irradiance absorption measurements. The Visidyne SAM (Sun and Aureole Measurement) instrument, which studies the size and distribution of cloud particles, was used to obtain the experimental data. By introducing a spectrometer to the SAM instrument, column water vapor is produced as part of the d

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23

Hick, Peter T. "Determination of water column characteristics in coastal environments using remote sensing." Curtin University of Technology, School of Surveying and Land Information, 1997. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=10817.

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This thesis illustrates the specific aspects that influence or limit the application of remotely-sensed data for information retrieval from coastal marine, estuarine and riverine environments. The thesis is drawn principally from ten separate studies and is divided into discrete sections, or experiments, that provide an understanding of the fundamental aspects of the effects of the atmosphere, water surface, water column and bottom on sensor-received reflected signal.The results show the importance of precise calculation of acquisition parameters and the absolute importance of relevant referen

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24

Chan, Philip Chi Ho. "Column study of the effects of operational and water quality factors on bromate reduction by zerovalent iron /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20CHAN.

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25

Actkinson, John Ira. "Minesweeping for pressure actuated mines by air injection into a water column." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5493.

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Approved for public release; distribution is unlimited.<br>The U.S. Navy historically has not had an adequate means to remotely pressure-sweep for mines at reasonable speeds and cost, and this is still the case. The Navy has addressed such threats, but countermeasures are time consuming and considered to be very resource intensive. During this thesis two sets of data were collected in tow tank experiments using two different sizes of Bubble Squid apparatus. This thesis is a continuation of work already completed by Lieutenant Jeffery Murawski from December 2009. This continuation was able

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26

Mackinnon, Pauline Anna. "The influence of geometry on turbulent losses in an oscillating water column." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357453.

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27

King, Linda L. 1964. "Chlorophyll diagenesis in the water column and sediments of the Black Sea." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12565.

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28

Freeman, Kate. "Numerical modelling and control of an oscillating water column wave energy converter." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3290.

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An oscillating water column (OWC) wave energy converter (WEC) is a device designed to extract energy from waves at sea by using the water to move trapped air and thus drive an air turbine. Because the incident waves and the force caused by the power take-off (PTO) interact, control of the power take off (PTO) system can increase the total energy converted. A numerical model was developed to study the interaction of an OWC with the water and other structures around it. ANSYS AQWA is used here to find the effects on the water surface in and around the central column of a five-column, breakwater-

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29

Ibrahim, Sallehuddin. "Measurement of gas bubbles in a vertical water column using optical tomography." Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/19852/.

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This thesis presents an investigation into the application of optical fibre sensors to a tomographic imaging system for use with gas/water mixtures. Several sensing techniques for measurement of two component flow using non-intrusive techniques are discussed and their relevance to tomographic applications considered. Optical systems are shown to be worthy of investigation. The interaction between a collimated beam of light and a spherical bubble is described. Modelling of different arrangements of projections of optical sensing arrays is carried out to predict the expected sensor output voltag

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30

Dai, Saishuai. "Assessing the performance of an oscillating water column type wave energy device." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27860.

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To meet the need of clean energy, a variety of renewable energy technologies have been developed. Among those, wave energy stands out for its outstanding merits. For instance, wave energy is clean, renewable, has high energy intensity and long resource available time. However, due to the short development history of wave energy technologies, the cost of wave energy is too high compared with the other renewable energy technologies. As well as lack of cost effective Wave Energy Converters (WECs) scenarios, another reason that keeps the cost of wave energy high is that the performance of a WECs m

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31

Chienthavorn, Orapin. "Detection in superheated water chromatography." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/32394.

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Superheated water has been used successfully as an eluent in liquid chromatography and has been coupled to various modes of detection, ultraviolet (UV), fluorescence, and nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MS). A number of compounds were examined on poly(styrene-divinylbenzene) (PS-OVB), polybutadiene (PBO), and octadecylsilyl bonded silica (OOS) column with isothermal and temperature programmes.

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32

Guidi, Lionel. "Particle flux transformation in the mesopelagic water column: process analysis and global balance." Diss., Texas A&M University, 2008. http://hdl.handle.net/1969.1/85946.

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Marine aggregates are an important means of carbon transfers downwards to the deep ocean as well as an important nutritional source for benthic organism communities that are the ultimate recipients of the flux. During these last 10 years, data on size distribution of particulate matter have been collected in different oceanic provinces using an Underwater Video Profiler. The cruise data include simultaneous analyses of particle size distributions as well as additional physical and biological measurements of water properties through the water column. First, size distributions of large aggregate

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33

Holzhauer, Eva. "Assessment of the power available in a fixed offshore oscillating water column plant." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/8053.

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The early effects of the global warming can be observed and people around the world are beginning to realize the seriousness of the situation. Reducing the CO2 emissions produced by fossil energy seems to be one of the main worldwide technological challenges at the time of writing. Hence, since the oil crisis in the 70s, a growing interest in renewable energies has been noticed. In Europe, the European Commission fixed a target: to produce 20% of the EU energy from renewable sources by 2020. Similar initiatives, in varying degrees, are being considered around the globe. Among all the renewable

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34

Niewinski, Desi. "Water column oxygen respiration dynamics and quantification of nitrogen cycling genes insediment of Lake Erie." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1547330489488682.

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35

Jana, Partha. "REMOVAL OF ARSENIC(III) FROM WATER WITH A NEW SOLID-SUPPORTED THIOL." UKnowledge, 2012. http://uknowledge.uky.edu/chemistry_etds/11.

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Arsenic is a highly toxic, easily transportable and widespread contaminant in groundwater throughout the world. Arsenic causes acute toxicity by disrupting biological functions. In groundwater arsenic concentrations can reach up to a few milligrams per liter. Current regulations on arsenic content in drinking water are becoming more stringent and require the standard to be reduced to a few parts per billion. Arsenic exists as oxyanions in aqueous solution in either trivalent or pentavalent oxidation states depending on the oxidation-reduction potential and pH of the medium. Several treatment m

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36

Bartleson, Richard Dixon. "Interactions of seagrass beds and the water column effects of bed size and hydrodynamics /." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/2106.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Marine-Estuarine-Environmental Sciences. 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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37

Brendmo, Arne. "An investigation of wave-energy absorption by single and double oscillating water-column converters." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 1995. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14721.

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38

Bugden, John B. C. "Spatial and temporal variation of microbial properties in the water column of Florida Bay." FIU Digital Commons, 1992. http://digitalcommons.fiu.edu/etd/1947.

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Physical and biological properties of the water column of Florida Bay were examined at seven study sites over an eighteen month period. The results indicated seasonality in some parameters, but was not evident in others. The data displayed statistically significant (P < 0.05) differences between study sites indicating spatial variation. The presence of seagrass affected the overlying water column, especially with respect to the biological parameters: those areas overlying seagrass beds displayed statistically significantly higher values than those over sparsely covered or barren areas. During

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39

Cohen, Ashley B. "The Degradation of Pigments in the Water Column and Sediments of the Bermuda Rise." Thesis, State University of New York at Stony Brook, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1586743.

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<p> The export of particulate carbon from the surface ocean into deeper water and to the seabed is a critical component of the carbon cycle. The concentrations and compositions of particulate pigments collected at different depths and sinking at different settling velocities can be used as a proxy for biologically mediated processes important to the early degradation of OM. By knowing what processes the compositional and quantitative changes in the particulate pigments represent, the POM cycle of the BaRFlux area can be better understood. It is important to understand the POM cycle because dep

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Bayoumi, Ahmed Seif-Eldine Mohamed. "Development of numerical wave power prediction tool offshore oscillating water column wave energy converter." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18992.

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Marine renewable energy sources are crucial alternatives for a sustainable development. The idea of generating electrical power from water waves has been realized for many years. In fact, waves are now considered as an ideal renewable energy source since a Wave Energy Converter (WEC) has no fuel cost and provides cleanly a high power density that is available most of the time. The third generation of WECs is intended to be installed offshore. This allows the device to harvest the great energy content of waves found in deep water and minimise the environmental impacts of the device. On the othe

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41

Kashada, Mohamed Abdulsalam. "Modelling of unsteady pipe flow with "liquid column separation" (water hammer induced transient cavitation)." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/4012.

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Understanding of waterhammer pressure transients in liquid-filled pipelines and their computational (numerical) modelling as unsteady one-dimensional flow is well established in the literature and engineering practice. However, for the particular issue of the potential for low transient pressure to initiate a change of phase or release of dissolved gases, leading to the phenomenon of localised transient cavitation known as liquid column separation, there is not yet a consensus on the reliability of the various numerical models that have been proposed in the literature. To contribute to further

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Carolus, Thomas, and Christoph Moisel. "Bidirectional air turbines for oscillating water column systems: Fast selection applying turbomachinery scaling laws." Elsevier, 2017. https://publish.fid-move.qucosa.de/id/qucosa%3A36340.

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The collector of an oscillating water column system (OWC) for wave energy utilization requires a bidirectional turbine that copes with pneumatic power while providing specified impedance or, in terms of an OWC designer, “damping”. Damping is realized by keeping to a specific flow rate through the turbine at a given pressure head due to the individual performance characteristic of the turbine. With the number of turbine designs increasing designers of OWC systems are facing more options to select and dimension a bidirectional turbine. Energy yield, size and hence cost of the turbine and electri

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Ghannami, Mohamed Ali. "Statistical Inference of Water Column Depth through Radiometric and Geometric Analysis of Spectral Imagery." Electronic Thesis or Diss., Brest, École nationale supérieure de techniques avancées Bretagne, 2024. http://www.theses.fr/2024ENTA0008.

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La cartographie précise des eaux peu profondes, particulièrement en zones côtières, reste un défi majeur, notamment en ce qui concerne les incertitudes dans la mesure de la profondeur de la colonne d’eau (WCD). Cette précision est essentielle tant pour la navigation que pour la recherche, qui s’est jusqu’ici principalement concentrée sur l’estimation de la WCD sans considérer pleinement les incertitudes associées. Les méthodes traditionnelles, qu’elles soient radiométriques ou géométriques, présentent chacune leurs limitations spécifiques. Notre travail propose un cadre d’inférence basé sur la

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Studley, Allison F. "Numerical Modeling of Air-Water Flows in Bubble Columns and Airlift Reactors." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36380.

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Bubble columns and airlift reactors were modeled numerically to better understand the hydrodynamics and analyze the mixing characteristics for each configuration. An Eulerian-Eulerian approach was used to model air as the dispersed phase within a continuous phase of water using the commercial software FLUENT. The Schiller-Naumann drag model was employed along with virtual mass and the standard k-e turbulence model. The equations were discretized using the QUICK scheme and solved with the SIMPLE coupling algorithm. The flow regimes of a bubble column were investigated by varying the column diam

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45

Staudinger, Jeff. "Evaluation of mass transfer correlations for packed column air stripping of volatile organic contaminants from water supplies." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101153.

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The application of packed column air stripping systems to the removal of volatile organic contaminants (VOCs) from drinking water sources was investigated. The crucial element for the design of such systems exists in obtaining accurate predictions of mass transfer rates. The first phase of this study evaluated three semi-empirical correlations available for predicting packed column mass transfer rates. From this initial screening, the Onda model was selected for further investigation. A test data base was established from water treatment pilot study results reported in the literature. Ten sepa

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Roca, Martí Montserrat. "Carbon export from the upper water column of the polar oceans by using natural radionuclides." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/457190.

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Els oceans Àrtic i Austral representen el 20-35% de l’absorció oceànica global de diòxid de carboni (CO2) atmosfèric. Aquesta absorció és en part causada per la bomba biològica a través de la fixació de CO2 a la superfície de l’oceà i la transferència d’una fracció de la matèria orgànica a aigües profundes. Un dels majors reptes de la investigació polar és pronosticar els efectes del canvi climàtic sobre el funcionament de l’ecosistema marí i la captació de carboni a altes latituds. La poca informació existent sobre la dinàmica dels ecosistemes àrtic i antàrtic, la rapidesa dels efectes del ca

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Romigh, Melissa Marie. "Organic carbon flux at the mangrove soil-water column interface in the Florida Coastal Everglades." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3751.

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Coastal outwelling of organic carbon from mangrove wetlands contributes to near-shore productivity and influences biogeochemical cycling of elements. I used a flume to measure fluxes of dissolved organic carbon (DOC) between a mangrove forest and adjacent tidal creek along Shark River, Florida. Shark RiverÂs hydrology is influenced by diurnal tides and seasonal rainfall and wind patterns. Samplings were made over multiple tidal cycles in 2003 to include dry, wet, and transitional seasons. Surface water [DOC], temperature, salinity, conductivity and pH were significantly different among all sa

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Stewart, Terence Patrick. "The influence of harbour geometry on the performance of oscillating water column wave power converters." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359126.

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Baker, Beverly Eloise. "Effect of Water Column pH and NO3 on Ortho-Phosphate Release Rates from Freshwater Sediments." W&M ScholarWorks, 1989. https://scholarworks.wm.edu/etd/1539617604.

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LEBRE, DANIEL T. "Desenvolvimento de metodologia para a determinacao de herbicidas e inseticidas em aguas superficiais utilizando extracao liquido-solido e cromatografia liquida de alta eficiencia." reponame:Repositório Institucional do IPEN, 2000. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10809.

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