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	Author	Eymar-Dauphin Pauline
	Title	Réponses des plantes aquatiques des Iles Kerguelen à l’intensification des contraintes thermiques de leur habitat. Approche par les hypervolumes. Master 2 ECOMONT, Université de Savoie Mont-Blanc (encadrement : A.-K. Bittebiere)			Type	Master 2
	Year	2020	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Programme	136
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	7759
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	Author	F. Pitout, A. Marchaudon, K. J. Trattner, J. Berchem, H. Laakso, C. P. Escoubet
	Title	Simultaneous Polar and Cluster Observations in the Northern and Southern Middle-Altitude Polar Cusps Around Equinox			Type	Journal
	Year	2020	Publication	Journal of Geophysical Research: Space Physics	Abbreviated Journal
	Volume	125	Issue	12	Pages	e2020JA028346
	Keywords	dayside magnetosphere hemispheric asymmetry polar cusp
	Abstract	We present an event of simultaneous observations of the northern and southern middle-altitude polar cusps by the Polar spacecraft and Cluster fleet that occurred on 23 September 2004. We examine the possible asymmetries in the fields and plasma parameters, although the proximity of the equinox should limit these asymmetries. Ion sensors reveal two dispersions in both cusps, and data analysis leads to the conclusion that those dispersions are due to pulsed reconnection at a single X-line, which runs along the subsolar magnetopause. While the electromagnetic and particle energy fluxes injected in both cusp are globally very similar, we report significant differences in ion dispersions, width of the low-latitude boundary layer, and peak convection velocities. We ascribe these differences to the dipole tilt that introduces an asymmetry in the magnetosheath flow at the exterior cusps.
	Programme	312
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2169-9402	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6363
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	Author
	Title				Type	Journal
	Year	2020	Publication	Annales de geographie	Abbreviated Journal
	Volume	732	Issue	2	Pages	31-52
	Keywords
	Abstract
	Programme	136
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0003-4010	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6947
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	Author	Fabrizio Magrini, Dario Jozinovi?, Fabio Cammarano, Alberto Michelini, Lapo Boschi
	Title	Local earthquakes detection: A benchmark dataset of 3-component seismograms built on a global scale			Type	Journal
	Year	2020	Publication	Artificial Intelligence in Geosciences	Abbreviated Journal
	Volume	1	Issue		Pages	1-10
	Keywords	Benchmark dataset Earthquake detection algorithm Seismology Supervised machine learning
	Abstract	Machine learning is becoming increasingly important in scientific and technological progress, due to its ability to create models that describe complex data and generalize well. The wealth of publicly-available seismic data nowadays requires automated, fast, and reliable tools to carry out a multitude of tasks, such as the detection of small, local earthquakes in areas characterized by sparsity of receivers. A similar application of machine learning, however, should be built on a large amount of labeled seismograms, which is neither immediate to obtain nor to compile. In this study we present a large dataset of seismograms recorded along the vertical, north, and east components of 1487 broad-band or very broad-band receivers distributed worldwide; this includes 629,095 3-component seismograms generated by 304,878 local earthquakes and labeled as EQ, and 615,847 ones labeled as noise (AN). Application of machine learning to this dataset shows that a simple Convolutional Neural Network of 67,939 parameters allows discriminating between earthquakes and noise single-station recordings, even if applied in regions not represented in the training set. Achieving an accuracy of 96.7, 95.3, and 93.2% on training, validation, and test set, respectively, we prove that the large variety of geological and tectonic settings covered by our data supports the generalization capabilities of the algorithm, and makes it applicable to real-time detection of local events. We make the database publicly available, intending to provide the seismological and broader scientific community with a benchmark for time-series to be used as a testing ground in signal processing.
	Programme	133
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2666-5441	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	8017
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	Author	Fort, J., Grémillet, D., Helgason, H.H., Albert, C., Ame?lineau, F., Anker-Nilssen, T., Angelier, F., Bra?then, V.S., Bringsvor, I.S., Carlsen, T.H., Chastel, O., Cherenkov, A., Christensen-Dalsgaard, S., Danielsen, J., Daunt, F., Descamps, S., Dietz, R., Elliott, K., Erikstad, K.E., Eulaers, I., Ezhov, A., Fauchald, P., Fifield, D., Frederiksen, M., Gabrielsen, G.W., Gavrilo, M., Gilchrist, G., Gilg, O., Giraudeau, M., Gíslason, S., Golubova, E., Hallgrimsson, G.T., Hansen, E.S., S.A., H., Hatch, S., Helberg, M., Huffeldt, N.P., Jónsson, J.E., Kitaysky, A., Kolbeinsson, Y., Krasnov, Y., Langset, M., Latty, C., Leclaire, S., Lorentsen, S.H., Lorentzen, E., Love, O., Mallory, M., Merkel, B., Merkel, F., Moe, B., Montevecchi, W.A., Mosbech, A., Newell, M., Olsen, B., Orben, R., Parkinson, K., Patterson, A., Pratte, I., Provencher, J., Ragnarsdottir, S.B., Reiertsen, T.K., Renner, H., Robertson, G.J., Rojek, N., M, R., Sagerup, K., Semashko, V., Sepp, T., Sonne, C., Systad, G.H., Takahashi, A., Tarroux, A., Tertitski, G., Thompson, P., Tolmacheva, E., Will, A., Wojczulanis-Jakubas, K., Tórarinsson, T.L., Bustamante, P. & Strøm, H.
	Title	Mercury contamination of Arctic seabirds : spatio-temporal trends and impacts			Type	Peer-reviewed symposium
	Year	2020	Publication	Third world seabird conference, Hobart, Australia, October 19-23, 2020	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Programme	1036
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	8451
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	Author
	Title				Type	Journal
	Year	2020	Publication	Atmospheric Chemistry and Physics	Abbreviated Journal
	Volume	20	Issue	13	Pages	7683-7692
	Keywords
	Abstract
	Programme	416,1028
	Campaign
	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1680-7316	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	7736
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	Author
	Title	When do older birds better resist stress? A study of the corticosterone stress response in snow petrels			Type	Journal
	Year	2020	Publication	Biology letters	Abbreviated Journal
	Volume	16	Issue	1	Pages	20190733
	Keywords
	Abstract	Life-history theory predicts that, to optimize their fitness, individuals should increase their reproductive effort as their residual reproductive value decreases. Accordingly, several studies have shown that individuals downregulate their glucocorticoid stress response (a proxy of reproductive investment in vertebrates) as they age, and as the subsequent reproductive value decreases. However, and surprisingly, results appear inconsistent, suggesting that the environmental context or the individual state may affect the relationship between age and reproductive effort. Here, we tested for the first time this hypothesis, and more specifically, whether this attenuation of the corticosterone stress response with advancing age depends on the energetic status of individuals. We compared the influence of age on the corticosterone stress response between fasting and non-fasting breeding snow petrels (Pagodroma nivea), an extremely long-lived bird. As expected, we found that the corticosterone stress response was attenuated in old petrels, but only when they were not fasting. Interestingly, this pattern was not apparent in fasting petrels, suggesting that old birds downregulate their corticosterone stress response and increase their parental investment only when they are in good body condition. At the ultimate level, old individuals may maintain a strong corticosterone stress response when fasting because the survival costs of increased stress resistance and parental effort might then outweigh their reproductive benefits.
	Programme	109
	Campaign
	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher	Royal Society	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	7669
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	Author	G. Hubert, S. Aubry
	Title	Study of the Impact of Past Extreme Solar Events on the Modern Air Traffic			Type	Journal
	Year	2020	Publication	Space Weather	Abbreviated Journal
	Volume	19	Issue	4	Pages	e2020SW002665
	Keywords
	Abstract	The ancient solar energetic particle (SEP) events of 774/775 CE and 993/994 CE were characterized thanks to radionuclide productions stored in environmental archives as ice cores or tree rings. Primary cosmic ray spectra deduced from these cosmogenic isotope data indicate that the impact of these extreme SEP events would have been much more significant than any of the ones observed during the modern era. However, the impact of these should be studied more accurately in the framework of the ambient dose equivalent impacting aircrew and passengers in the air traffic context by considering physical parameters such as time profile or anisotropy properties. In this study, the impact that 774/775 CE and 993/994 CE past extreme SEP events could have had on modern air traffic is discussed. Possible event spectra for these ancient events are derived from the spectra ground-level enhancement (GLE) 5 and GLE 69, which have been observed during the modern era and have been widely studied/characterized using measurements. The investigations include the impact of the SEP activity on ambient dose equivalent, including detailed analyses considering route, airplane characteristics (departure, arrival, continent, airplane type), and the time occurrence of the SEP event. Statistical analyses show that additional dose levels can reach values on the order of 70 mSv, which is absolutely significant considering the current air traffic recommendations. The orders of magnitude of the ambient dose equivalent induced during past extreme SEP events raises a number of issues, both for aircrews and for avionics hardware. This study demonstrates that simulations can be useful for the evaluation of risks in case of extreme SEP events.
	Programme	1112
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1542-7390	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	7958
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	Author
	Title	Selecting environmental descriptors is critical for modelling the distribution of Antarctic benthic species			Type	Journal
	Year	2020	Publication	Polar Biology	Abbreviated Journal
	Volume	43	Issue	9	Pages	1363-1381
	Keywords
	Abstract	Species distribution models (SDMs) are increasingly used in ecological and biogeographic studies by Antarctic biologists, including for conservation and management purposes. During the modelling process, model calibration is a critical step to ensure model reliability and robustness, especially in the case of SDMs, for which the number of selected environmental descriptors and their collinearity is a recurring issue. Boosted regression trees (BRT) was previously considered as one of the best modelling approach to correct for this type of bias. In the present study, we test the performance of BRT in modelling the distribution of Southern Ocean species using different numbers of environmental descriptors, either collinear or not. Models are generated for six sea star species with contrasting ecological niches and wide distribution ranges over the entire Southern Ocean. For the six studied species, overall modelling performance is not affected by the number of environmental descriptors used to generate models, BRT using the most informative descriptors and minimizing model overfitting. However, removing collinear descriptors also helps reduce model overfitting. Our results confirm that BRTs may perform well and are relevant to deal with complex and redundant environmental information for Antarctic biodiversity distribution studies. Selecting a limited number of non-collinear descriptors before modelling may generate simpler models and facilitate their interpretation. The modelled distributions do not differ noticeably between the different species despite contrasting species ecological niches. This unexpected result stresses important limitations in using SDMs for broad scale spatial studies, based on limited, spatially aggregated data, and low-resolution descriptors.
	Programme	1044,1124
	Campaign
	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1432-2056	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	8184
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	Author	Guillot T.
	Title	Discovering Exoplanets from Antarctica with ASTEP			Type	Conference - International - Communication
	Year	2020	Publication	On the way to Antarctica seminar, 29 october 2020	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Programme	1066
	Campaign
	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	7829
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