Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Palaeoceanography"”.
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Aspects of Neogene palaeoceanography in the southern Tasman Sea (DSDP site 593)
… to form a basis for describing the Neogene palaeoceanography. The Subtropical Front lies south of Site 593, and has done so throughout the Neogene, separating surface waters of tropical- and antarctic-origin. Cool Subtropical Waters (CSTW) at the modern surface are underlain by Subantarctic …
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High resolution palaeoceanography and palaeoclimatology from mid and high latitude Late Cretaceous laminated sediments
Late Cretaceous laminated diatomaceous sediments from the Marca Shale (California) and CESAR 6 core (Arctic Ocean) have been analysed using scanning electron microscopy techniques and found to contain marine varves. The varve interpretation is based on the pervasive occurrence of laminae types that …
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Late glacial and Holocene marine geology, palaeoceanography and palaeoecology of the Northern Isles of Scotland
… of the Late glacial and Holocene marine geology, palaeoceanography and palaeoecology of the northwestern North Sea. Chapters 2 and 4 investigate the sedimentary expression of the Storegga tsunami event (ca. 8,150 cal a BP), and the implications for the semi-coeval 8.2 ka cooling event. Within the …
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Stable isotope stratigraphy of deep-sea cores from the Southwest Pacific region: aspects of late Quaternary palaeoceanography
¹⁸O/¹⁶O and ¹³C/¹²C ratios of calcareous planktonic and benthic foraminifera from the Late Quaternary section of deep-sea sediment cores from the Tasman Sea and Southwest Pacific Ocean have been determined in this study. The core sites cover a latitudinal range from the equator to 49°S, and samples …
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On the role of the Southern Ocean in the global carbon cycle and atmospheric CO2 change
… climate and thus one of the foremost problems in palaeoceanography and Earth System Science regards the mechanism(s) responsible for natural changes in atmospheric CO2 concentration. It is becoming clear that the Southern Ocean overturning circulation plays an important role in the global carbon …
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Neogene to quaternary foraminifera from the western margin of southern Africa
… Quaternary stratigraphy, palaeoenvironment and palaeoceanography of the western margin of southern Africa. Cores from the Namibian shelf recovered middle Miocene calcareous mud in erosional contact with overlying Pliocene to Pleistocene phosphatic sediments. Strontium isotope stratigraphy and …
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Investigating the circulation of Southern Ocean deep water masses over the last 1.5 million years by geochemical fingerprinting of marine sediments
The Southern Ocean (SO) is a critical component in the global ocean conveyor. As the only conduit linking the Atlantic, Indian and Pacific Oceans, as well as an important region of upwelling and water mass formation, it is thought to have played a key role in modulating Earth’s past climate. …
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Geochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacific
The relatively understudied intermediate waters of the world have been implicated as an important part of the global ocean circulation. This thesis discusses the intermediate waters of the Pacific over space and time. Initially, by using geochemical tracers to look at the present distribution, …
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Geochemically tracing the intermediate and surface waters in the Tasman Sea, southwest Pacific
The relatively understudied intermediate waters of the world have been implicated as an important part of the global ocean circulation. This thesis discusses the intermediate waters of the Pacific over space and time. Initially, by using geochemical tracers to look at the present distribution, …