| Records |
| Author |
Gomm E. |
| Title |
Zooplankton community assemblages and trophic links in a nearshore zone of the Adélie Basin, East Antarctica. |
Type |
Report |
| Year |
2016 |
Publication  |
University of tasmania honours thesis, |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
68 pp. |
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| Abstract |
Distribution, and abundances of the zooplankton community at site Jacobsen (40 m depth) near Dumont d’Urville Station (-66.39oS, 140.00oE) in the East Antarctic, Adélie Basin area are reported. The sampling period went from the 15th November 2015 to the 3rd of February 2016. Samples were taken in the water column over the course of the sea ice break-up and subsequent spring phytoplankton bloom. Environmental variables such as chlorophyll a, air temperature, salinity and temperature in the water column were measured and later sea ice extent and concentration data was acquired to make informed conclusions regarding the presence and abundance of zooplankton species. Oithona similis, Oncaea curvata, and Drescheriella glacialis were species found in high abundances. D. glacialis in particular was found within the sea ice.
Stable isotope analysis was conducted on samples of seawater particulate organic matter (POM), ice core POM, Oithona similis, Oncaea curvata, Pleuragramma antarcticum larvae, and adult Trematomus newnesi, Trematomus bernacchii, and Notothenia coriiceps. Where necessary samples were lipid extracted of lipid corrected to give appropriate ????13C and ????15N values. Known trophic enrichment factors were then used to construct a possible food chain in the lower trophic levels of a coastal Antarctic site. |
| Programme |
1142 |
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Approved |
yes |
| Call Number |
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Serial |
6817 |
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| Author |
David Grémillet |
| Title |
The spatial ecology and conservation of seabird facing global change |
Type |
Communication |
| Year |
2017 |
Publication |
University of southern denmark |
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Issue |
Invited talk |
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388 |
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yes |
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Serial |
7340 |
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| Author |
Ponthus L |
| Title |
Origine, evolution et mise en place d'un pluton recent en context intraplaque océanique. Exemple du complexe Sud de Rallier du Baty, Kerguelen (TAAF). |
Type |
Thesis |
| Year |
2018 |
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1077 |
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yes |
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7372 |
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| Author |
Cortiade N |
| Title |
Caractérisation des conditions de serpentinisation du manteau de Kerguelen et implication pour l'histoire géodynamique du plateau. |
Type |
Master 2 |
| Year |
2018 |
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1077 |
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yes |
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7373 |
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| Author |
Romie Tignat-Perrier |
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Thesis |
| Year |
2019 |
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1028 |
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Bachelor's thesis |
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yes |
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Serial |
7933 |
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| Author |
Lucien Goulet |
| Title |
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Type |
Master 1 |
| Year |
2021 |
Publication |
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23 |
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Dans un contexte de changement climatique, il est important de déterminer avec précision l’évolution actuelle et future des processus environnementaux pouvant avoir un impact sur les populations. Ainsi, connaitre l’évolution saisonnière du couvert neigeux s’avère crucial car c’est une composante du cycle de l’eau, jouant un rôle de stockage au printemps. La télédétection spatiale joue un rôle important pour le suivi de l’évolution du manteau neigeux aux échelles continentale et régionale. Des études ont déjà mis en avant certains avantages du radar en bande X (notamment son signal de phase). L’analyse du lien entre la réponse de plusieurs paramètres polarimétriques (K0, K3, K4, K7, CCOH et le CPD) et des données météorologiques (dont l’épaisseur du manteau), a permis de conforter l’utilité de la bande X pour la cible neige. On note un intérêt pour l’intensité totale (K0) qui s’avère être intéressante pour l’étude de la hauteur totale de neige. La différence de phase (CPD), ne s’avère pas concluante pour retracer l’épaisseur totale du manteau neigeux dans notre cas d’application. En revanche, elle offre un bon diagnostic des chutes de neige fraiche et pour la cartographie du métamorphisme de la neige. |
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1126 |
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Approved |
yes |
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Serial |
8756 |
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| Author |
Shin, J. |
| Title |
Millennial-scale atmospheric CO2 variations during the Marine Isotope Stage 6 |
Type |
Thesis |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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The main objective of this thesis is to understand the millennial variability of atmospheric CO2 during the Marine Isotope Stage 6 (MIS 6), the penultimate glacial, period (185-135 kyr BP). During the early MIS 6 period (185-160 kyr BP), 6 millennial-scale climate oscillations can be observed in proxy records of Antarctic temperature, the bipolar see-saw phenomenon in the North Atlantic region, and Monsoon intensity in low latitudes. An intensified hydrological cycle and iceberg calving in the North Atlantic may have impacted on the Atlantic Meridional Overturning Circulation during MIS 6 (Margari et al., 2010). Atmospheric CO2 reconstructions from Antarctic ice cores can provide key information on how atmospheric CO2 concentrations are linked to millennial-scale climate changes. However, existing CO2 records from the Vostok ice core do not show the millennial variability due to the lack of suitable temporal resolution and precision. To understand atmospheric CO2 variability during MIS 6, a precision of less than 2 ppm is mandatory, because there is a possibility that we could observe small CO2 variability of less than 5 ppm during the smaller Antarctic isotope maxima events as observed during the last glacial period (Ahn and Brook, 2014; Bereiter et al., 2012).To investigate how atmospheric CO2 is related with climate change on millennial time scales during MIS 6, we reconstructed 150 samples of atmospheric CO2 data from the EPICA Dome C (EDC) ice core during the MIS 6 period (189.4-135.4 kyr BP). One minor and five major variabilities of atmospheric CO2 during the early MIS 6 period (189-160 kyr BP) were found. These variabilities are highly matched with Antarctic temperature. During the short stadials in the North Atlantic, atmospheric CO2 variations are negligible and decoupled with temperature variations in Dome C. During this period, the strength of upwelling in the southern ocean might not be sufficient to impact on atmospheric CO2. In addition, 2 modes of CO2 variations are present in the MIS 6 period. Carbon dioxide maxima (CDM) 6 lags abrupt warming in the Northern Hemisphere by only 100±360 yrs, while the lags for CDM 3 and 4 are much longer, 1,100±280 yrs on average. Theses 2 modes of CO2 variations might be related with a mode change of AMOC from the earliest MIS 6 to MIS 6.5. These two phenomena also are observed during the last glacial period. However, the limited available proxy data permit only an exploratory discussion of the mechanisms responsible for CO2 variability during MIS6. Because the boundary conditions of the last glacial period cannot be applied to MIS 6, additional proxy data and multiple modelling studies conducted during MIS 6 period are needed. |
| Programme |
1203 |
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yes |
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7931 |
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| Author |
Derson, E. |
| Title |
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Type |
Book Chapter |
| Year |
2019 |
Publication |
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1066 |
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Bachelor's thesis |
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yes |
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7816 |
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| Author |
Lamarque G. |
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Thesis |
| Year |
2015 |
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Soutenue le 26-11-2015 |
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Pages |
201 |
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1003 |
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Ph.D. thesis |
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yes |
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7728 |
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| Author |
Marine Bourriquen |
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Thesis |
| Year |
2018 |
Publication |
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208 p |
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1223 |
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yes |
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8720 |
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