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| Registros recuperados: 12 | |
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| De Deckker, P.; Moros, M.; Perner, K.; Blanz, T.; Wacker, L.; Schneider, R.; Barrows, T.t.; O’loingsigh, T.; Jansen, E.. |
| The Quaternary is well known for being a period of the geological record that saw significant and alternating climatic fluctuations. Here, we concentrate on the last 94 millennia that saw Australia and its surrounding seas undergo significant environmental changes. Importantly also it is during that this period of time includes the arrival and settlement of humans in Australia. Following on from Marine Isotopic Stage 4 (MIS4) that saw, over the period of 71-59 ka BP, a significant eustatic sea level drop (similar to 100 m), low sea-surface temperatures as well as glacial conditions on land, Australia experienced wet conditions again, but eventually progressively entered into a glacial phase. By then, humans had arrived on this large continent and later the... |
| Tipo: Text |
Palavras-chave: Oceanic fronts; Leeuwin Current; Foraminifer faunal analysis; Marine isotopic stages; Last Glacial Maximum; Palaeoceanography; Sea-surface temperature; Moraines; Modern analogue technique; Subantarctic Front; G. ruber. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00657/76931/78127.pdf |
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| Hyrenbach, K. David; Veit, Richard R.; Weimerskirch, Henri; Metzl, Nicolas; Hunt, George L., Jr.. |
| Our objective was to understand how marine birds respond to oceanographic variability across the Southern Indian Ocean using data collected during an 16-day cruise (4-21 January 2003). We quantified concurrent water mass distributions, ocean productivity patterns, and seabird distributions across a heterogeneous pelagic ecosystem from subtropical to sub-Antarctic waters. We surveyed 5155 kin and sighted 15,606 birds from 51 species, and used these data to investigate how seabirds respond to spatial variability in the structure and productivity of the ocean. We addressed two spatial scales: the structure of seabird communities across macro-mega scale (1000 s km) biogeographic domains, and their coarse-scale (10 s km) aggregation at hydrographic and... |
| Tipo: Text |
Palavras-chave: Community structure; Seabirds; Ocean productivity; Oceanic fronts; Remote sensing; Species assemblages; Crozet basin; Indian ocean. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00235/34628/32969.pdf |
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| Luz Clara, M.. |
| En ocho campañas oceanográficas realizadas entre los años 2000 y 2006 en el Mar Patagónico se obtuvieron datos superficiales de temperatura y salinidad, presiones parciales de CO2 (pCO2) en el mar y la atmósfera, fluorescencia (utilizada como indicador de biomasa fitoplanctónica), clorofila-a (Cl-a) y vientos, entre otros. La magnitud y dirección del flujo de CO2 se encuentran gobernadas por la diferencia entre las pCO2 de la superficie del mar y del aire (?pCO2), la solubilidad del gas y la velocidad del viento. Los flujos mar-atmósfera de CO2 conforman una parte esencial en el ciclo global del carbono. En este trabajo se realiza una comparación entre los flujos de CO2 y la intensidad del viento con datos in-situ y satelitales. Los flujos se calculan... |
| Tipo: Theses and Dissertations |
Palavras-chave: Oceanographic surveys; Salinity; Temperature; Chlorophylls; Air-sea interaction; Oceanic fronts; Climatology. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/4207 |
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| Rascle, Nicolas; Molemaker, Jeroen; Marie, Louis; Nouguier, Frederic; Chapron, Bertrand; Lund, Bjorn; Mouche, Alexis. |
| Fine scale current gradients at the ocean surface can be observed by sea surface roughness. More specifically, directional surface roughness anomalies are related to the different horizontal current gradient components. This paper reports results from a dedicated experiment during the LASER (LAgrangian Submesoscale ExpeRiment) drifter deployment. A very sharp front, 50 m wide, is detected simultaneously in drifter trajectories, sea surface temperature and sea surface roughness. A new observational method is applied, using sun glitter reflections during multiple airplane passes to reconstruct the multi-angle roughness anomaly. This multi-angle anomaly is consistent with wave-current interactions over a front, including both cross-front convergence and... |
| Tipo: Text |
Palavras-chave: Sea surface roughness; Surface current; Remote sensing; Sun glitter; High resolution; Oceanic fronts. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00386/49767/50301.pdf |
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| Registros recuperados: 12 | |
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