Log in

Relevant bibliographies by topics / Oceanic carbonate system / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Oceanic carbonate system.

Dissertations / Theses on the topic 'Oceanic carbonate system'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 23 dissertations / theses for your research on the topic 'Oceanic carbonate system.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Yu, Jimin. "Boron concentration in foraminifera as a proxy for glacial-interglacial change in the oceanic carbonate system." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614120.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Wimart-Rousseau, Cathy. "Dynamiques saisonnière et pluriannuelle du système des carbonates dans les eaux de surface en mer Méditerranée." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0503.

Full text

Abstract:

La mer Méditerranée est souvent considérée comme un océan laboratoire pour comprendre les changements globaux liés à l’augmentation de CO2 atmosphérique. Ce travail, basé sur l’étude de données recueilles dans trois régions méditerranéennes, étudie les variations du CO2 océanique dans ce bassin. À l’échelle de la saison, outre les changements de température, le contenu en alcalinité influe sur le contenu en CO2 en Méditerranée orientale, tandis que les changements en carbone total sont responsables des variations dans le bassin occidental. En zone côtière urbanisée, l’émission de CO2 anthropiq

APA, Harvard, Vancouver, ISO, and other styles

3

Planchat, Alban. "Alkalinity and calcium carbonate in Earth system models, and implications for the ocean carbon cycle." Electronic Thesis or Diss., Université Paris sciences et lettres, 2023. http://www.theses.fr/2023UPSLE005.

Full text

Abstract:

L’alcalinité de l’océan (Alk) est essentielle dans l’absorption de carbone atmosphérique et offre une capacité tampon contre l’acidification. Dans le cadre des prévisions de l’absorption de carbone par les océans et des impacts potentiels sur les écosystèmes, la représentation de l’Alk et du principal facteur de sa distribution dans l’océan profond, le cycle du carbonate de calcium (CaCO3), ont souvent été négligés. Cette thèse aborde le manque de considération accordé à l’Alk et au cycle du CaCO3 dans les modèles du système terrestre (ESM) et explore les implications pour le cycle du carbone

APA, Harvard, Vancouver, ISO, and other styles

4

Beer, Christopher James. "Planktic foraminifera, ocean sediments and the palaeo-marine carbonate system." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/208361/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Legge, Oliver. "The role of carbonate system dynamics in Southern Ocean CO2 uptake." Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/66840/.

Full text

Abstract:

Three years of carbonate system measurements from Ryder Bay on the West Antarctic Peninsula are presented. The strong, asymmetric seasonal cycle of surface water Dissolved Inorganic Carbon (DIC) is quantitatively attributed to four processes:mixing of water masses, air-sea CO2 flux, calcium carbonate precipitation/dissolution and photosynthesis/respiration. In summer, reduced mixing with deeper water, net photosynthesis, and melting glacial ice and sea ice reduce DIC. In winter, mixing with deeper water and net heterotrophy increase DIC, resulting in aragonite saturation states close to 1. Ryd

APA, Harvard, Vancouver, ISO, and other styles

6

Murphy, Paulette P. "The carbonate system in seawater : laboratory and field studies /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/8509.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Melato, Lebohang Innocentia. "Characterization of the Carbonate System across the Agulhas and Agulhas Return Currents." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15745.

Full text

Abstract:

In this study, we investigate the role that the solubility and biological pumps have on CO₂ variability across the Agulhas Current system ( Agulhas Current and the Agulhas Return Current). The Agulhas Current system transports heat and salt from the Indian Ocean into the South Atlantic Ocean via the Agulhas leakage, which influences the Atlantic Meridional Overturning Circulation (AMOC). This study presents for the first time a characterization of the role the Agulhas Current system (Agulhas and Agulhas Return Currents) has on the uptake of anthropogenic CO₂. Fugacity of carbon dioxide (fCO₂ )

APA, Harvard, Vancouver, ISO, and other styles

8

Chanson, Mareva. "The Changes of the Carbonate Parameters in the Ocean: Anthropogenic and Natural Processes." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/275.

Full text

Abstract:

Since the industrial revolution, CO sub 2 has increased in the atmosphere and about 40% of the increase has been taken up by the ocean. An artifact of increasing CO sub 2 in the ocean is ocean acidification; it changes the calcium carbonate saturation state, which in turn alters the calcification rate of shelled organisms. The purpose of this dissertation is to estimate the changes in the carbonate system in the oceans, and whether these changes are due to natural (biological activity, chemical transformation or mixing of water masses) or anthropogenic (human activities) perturbations. The

APA, Harvard, Vancouver, ISO, and other styles

9

Jiang, Zong-Pei. "Variability and control of the surface ocean carbonate system observed from ships of opportunity." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/361858/.

Full text

Abstract:

The surface ocean plays an important role in the marine carbon cycle linking the atmosphere and the deep ocean. There are substantial variations in the surface ocean carbonate system in different environments and on various time scales, resulting from the interactions of various physical and biogeochemical processes. In this study, the use of Ships of Opportunity (SOO, as carriers of automatic underway measuring systems and platforms for sample collections) was promoted to enhance the surface ocean observing capacity to provide in-situ observations with better temporal resolution and spatial c

APA, Harvard, Vancouver, ISO, and other styles

10

Stella, Sofia. "Analysis of the Variability of Carbonate System Parameters in the North-East Atlantic." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

Find full text

Abstract:

The purpose of this thesis is to analyse the spatial and temporal variability of the aragonite saturation state (ΩAR), commonly used as an indicator of ocean acidification, in the North-East Atlantic. When the aragonite saturation state decreases below a certain threshold, ΩAR <1, calcifying organisms (i.e. molluscs, pteropods, foraminifera, crabs, etc.) are subject to dissolution of shells and aragonite structures. This objective agrees with the challenge 'Ocean, climate change and acidification' of the EU COST Ocean Governance for Sustainability project, which aims to combine the information

APA, Harvard, Vancouver, ISO, and other styles

11

Marques, Orselli Iole Beatriz. "On the role of Agulhas Eddies to anthropogenic carbon absorption and ocean acidification state in the South Atlantic Ocean." Thesis, Perpignan, 2020. http://www.theses.fr/2020PERP0005.

Full text

Abstract:

Depuis la révolution industrielle, les activités humaines libèrent de grandes quantités de dioxyde de carbone (CO2) dans l'atmosphère. Une partie de cet excès de CO2 est captée par les océans et a provoqué des perturbations et des changements dans le cycle du système carbonaté. Ces perturbations du système carbonaté sont désormais connues pour altérer l'état d'acidification des océans. Dans l'océan Atlantique Sud, les grands tourbillons des Aiguilles, sont parmi les plus grandes structures à méso-échelle des océans. Parce qu'ils sont des structures anticycloniques, ces tourbillons sont associé

APA, Harvard, Vancouver, ISO, and other styles

12

De, Bodt Caroline. "Pelagic calcification and fate of carbonate production in marine systems." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210156.

Full text

Abstract:

Human activities have contributed to the increase in atmospheric greenhouse gases such as carbon dioxide (CO2). This anthropogenic gas emission has led to a rise in the average Earth temperature. Moreover, the ocean constitutes the major sink for anthropogenic CO2 and its dissolution in surface waters has already resulted in an increase of seawater acidity since the beginning of the industrial revolution. This is commonly called ocean acidification. The increase in water temperature could induce modifications of the physical and chemical characteristics of the ocean. Also, the structure and th

APA, Harvard, Vancouver, ISO, and other styles

13

Balestrieri, Chiara. "Coccolithophore Carbonate and Calcification Dynamics in the Southern and Eastern Equatorial Pacific Oceans, during the Last Deglaciation." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3426341.

Full text

Abstract:

Over the last 800 ky the Earth’s climate system has been triggered by orbitally- forced oscillations, referred to as glacial- interglacial cycles. However, the detailed dynamics of these cycles, specifically the transition between glacial into interglacial phase, are still to be completely understood. An interesting feature of these phases is that atmospheric CO2 and CH4 concentrations are better correlated with Antarctica and Greenland rather than with North Hemisphere temperatures, and this suggests the hypothesis that greenhouse gases are important amplifiers of the orbital forcing in the

APA, Harvard, Vancouver, ISO, and other styles

14

Ingrosso, Gianmarco. "Ocean acidification processes in coastal and offshore ecosystems." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10916.

Full text

Abstract:

2013/2014<br>Since the beginning of Industrial Revolution a massive amount of atmospheric carbon dioxide, produced by human activity, has been absorbed by the World’s Oceans. This process has led to an acidification of marine waters on a global scale and is one of the most serious threats facing marine ecosystems in this century. The negative impacts of ocean acidification could be much more relevant in coastal ecosystems, where marine life is concentrated and biogeochemical processes are more active. However, future projections of pH reduction in these areas are difficult to estimate because

APA, Harvard, Vancouver, ISO, and other styles

15

Mega, Aline Martins. "Variação do peso-normalizado pelo tamanho de foraminíferos planctônicos como proxy para avaliação de processos de dissolução durante os últimos 70 mil anos no Sudoeste do Atlântico." Niterói, 2017. https://app.uff.br/riuff/handle/1/4166.

Full text

Abstract:

Submitted by Biblioteca de Pós-Graduação em Geoquímica BGQ (bgq@ndc.uff.br) on 2017-08-16T16:46:32Z No. of bitstreams: 1 Mega, A. M..pdf: 4299230 bytes, checksum: 4ff04b898e1e7eebe891e2a5a4dfcd98 (MD5)<br>Made available in DSpace on 2017-08-16T16:46:32Z (GMT). No. of bitstreams: 1 Mega, A. M..pdf: 4299230 bytes, checksum: 4ff04b898e1e7eebe891e2a5a4dfcd98 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Universidade Federal Fluminense. Instituto de Química. Programa de Pós-Graduação em Geoquímica, Niterói, RJ<br>Os oceanos funcionam como um reservatório natural de carb

APA, Harvard, Vancouver, ISO, and other styles

16

Calhoun, Andrew. "Systematic Patterning of Sediments in French Polynesian Coral Reef Systems." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/406.

Full text

Abstract:

Through a discipline termed “comparative sedimentology”, modern carbonate depositional environments have been used extensively as analogs to aid in the interpretation of equivalent fossil systems. Using field samples, GIS and remote sensing data for three isolated carbonate platforms in the Pacific, this thesis seeks to examine relationships between grain texture and grain type and their environment of deposition. The motivation is to highlight relationships that have the potential to better understand facies relations on carbonate platforms, and thereby reduce uncertainty and increase accurac

APA, Harvard, Vancouver, ISO, and other styles

17

Rassmann, Jens. "Le système des carbonates influencé par la diagenèse précoce dans les sédiments côtiers méditerranéens en lien avec l’acidification des océans." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV110/document.

Full text

Abstract:

L’océan côtier occupe une position clé dans le cycle du carbone et est exposé à l’acidification des océans. Une grande partie de matière organique(MO) marine et continentale est minéralisée dans les sédiments estuariens par des voies aérobies ou anaérobies. Cette minéralisation produit du carbone inorganique dissous (DIC), mais aussi de l’alcalinité totale(TA) pour la partie anoxique, ce qui tamponne les variations de pH du système et augmente la capacitéde l’eau de mer à absorber du CO2. Des mesures dans les sédiments du prodelta du Rhône ont montré que la minéralisation anoxique, surtout la

APA, Harvard, Vancouver, ISO, and other styles

18

Rassmann, Jens. "Le système des carbonates influencé par la diagenèse précoce dans les sédiments côtiers méditerranéens en lien avec l’acidification des océans." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV110.

Full text

Abstract:

L’océan côtier occupe une position clé dans le cycle du carbone et est exposé à l’acidification des océans. Une grande partie de matière organique(MO) marine et continentale est minéralisée dans les sédiments estuariens par des voies aérobies ou anaérobies. Cette minéralisation produit du carbone inorganique dissous (DIC), mais aussi de l’alcalinité totale(TA) pour la partie anoxique, ce qui tamponne les variations de pH du système et augmente la capacitéde l’eau de mer à absorber du CO2. Des mesures dans les sédiments du prodelta du Rhône ont montré que la minéralisation anoxique, surtout la

APA, Harvard, Vancouver, ISO, and other styles

19

Weeber, Amy. "Seasonal and interannual variability of the marine carbonate system at the ice shelf in the eastern Weddell Gyre and its sensitivity to future ocean acidification." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/9807.

Full text

Abstract:

Includes bibliographical references.<br>Ocean Acidification through the uptake of anthropogenic CO₂ is resulting in a decrease in surface water carbonate ion concentration, a critical compound for marine calcifying organisms (Fabry et al., 2008; Orr et al., 2005). Natural seasonal variability is predicted to hasten the effects of Ocean Acidification in the Southern Ocean, resulting in possible surface water wintertime aragonite (the more soluble form of calcium carbonate) undersaturation (Ωarag< 1) south of the Antarctic Polar Front by the year 2030 (McNeil and Matear, 2008). An Ocean Acidific

APA, Harvard, Vancouver, ISO, and other styles

20

Marquez, Lencina Avila Jannine. "Comparaison de l’état de l’acidification des océans entre deux régions de l’océan Austral." Thesis, Perpignan, 2018. http://www.theses.fr/2018PERP0017.

Full text

Abstract:

L'intensification de l'effet de serre due à l'augmentation des concentrations de CO 2 dans l'atmosphère pourrait être plus élevée si ce n'est du rôle important de l'océan en tant que puits pour le CO 2 atmosphérique. Malheureusement, une conséquence de la capacité de l'océan à tamponner le CO 2 est l'acidification des eaux de surface des océans. L'océan Austral est particulièrement vulnérable à ces conséquences en raison de ses basses températures et de sa productivité primaire saisonnière élevée. La présente thèse de doctorat a comme objectif d’analyser le système des carbonates, en particuli

APA, Harvard, Vancouver, ISO, and other styles

21

Domeij, Hilliges Isak, and Cecilia Stendahl. "Ocean acidification effects on marine organisms : a study of Littorina littorea and Balanus improvisus." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-17445.

Full text

Abstract:

The world’s oceans are becoming more acid in a process called ocean acidification. The pH of the ocean have already decreased by 0.1 units from pre-industrial time until today. Scientists predict that by the year of 2100 the pH will decrease by as much as 0.4 units. This is a big potential problem to many marine species, because they have developed in such a stable environment that has not changed for millions of years. It is difficult to predict how they might be affected by such a decrease in pH during a relatively short time period. Several studies have been made on marine species exposed t

APA, Harvard, Vancouver, ISO, and other styles

22

Razafimbelo, Eugène. "Le bassin de morondava (madagascar) : synthese geologique et structurale." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13184.

Full text

Abstract:

La synthese des donnees geologiques et structurales du bassin de morondava conduit a modifier la nomenclature stratigraphique des formations sedimentaires du type "karroo". Dans le bassin, le controle tectonique de la sedimentation est realise par un jeu complexe mais permanent de failles en faisceaux denses. La fracturation continentale a permis la mise en place de roches effusives basaltes et gabbros, puis roches granito-syenitiques. L'epaisseur et la nature des formations sedimentaires du bassin de morondava sont propices a la naissance de gisements d'hydrocarbures

APA, Harvard, Vancouver, ISO, and other styles

23

Nand, Vikashni. "Development and Application of the Carbonate Measurement System to Monitor Ocean pH and Alkalinity." Phd thesis, 2019. http://hdl.handle.net/1885/158103.

Full text

Abstract:

Anthropogenic carbon dioxide released into the atmosphere is taken up by the oceans. The most profound change has been the decline in ocean pH as it is likely to impact calcifying marine organisms.. In chapter 2, a method utilising purified Bromophenol Blue (BPB) as an indicator to make simple one-point alkalinity measurements via spectrophotometric detection was developed. Our purified BPB dye was characterised over a range of temperatures and salinities and using the absorbance ratio (R (t) = 25 A590/A436) via equation: pH=pK_a +log[((R_([25])-e_1))/((e_2-R_([25]).e_3))] where e1, = 0.00533

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!