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Author G. Ekstrom, M Nettles, A.M. Dziewonski doi  openurl
  Title The global CMT project 2004-2010: Centroid-moment tensors for 13,017 earthquakes Type Journal Article
  Year 2012 Publication Physics of the Earth and Planetary Interiors Abbreviated Journal  
  Volume 200-201 Issue Pages  
  Keywords (down) Centroid-moment tensor; Earthquakes; Global seismicity  
  Abstract Earthquake moment tensors reflecting seven years of global seismic activity (2004–2010) are presented. The results are the product of the global centroid-moment-tensor (GCMT) project, which maintains and extends a catalog of global seismic moment tensors beginning with earthquakes in 1976. Starting with earthquakes in 2004, the GCMT analysis takes advantage of advances in the mapping of propagation characteristics of intermediate-period surface waves, and includes these waves in the moment-tensor inversions. This modification of the CMT algorithm makes possible the globally uniform determination of moment tensors for earthquakes as small as MW=5.0. For the period 2004–2010, 13,017 new centroid-moment tensors are reported.  
  Programme 133  
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  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 0031-9201 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 4648  
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Author Marchaudon A., Blelly P.‐L. doi  isbn
openurl 
  Title A new interhemispheric 16‐moment model of the plasmasphere‐ionosphere system: IPIM Type Journal
  Year 2015 Publication Journal of Geophysical Research: Space Physics Abbreviated Journal  
  Volume 120 Issue 7 Pages 5728-5745  
  Keywords (down) centrifugal acceleration interhemispheric exchanges mirror force temperature anisotropy  
  Abstract Abstract We present a new interhemispheric numerical model: the IRAP plasmasphere?ionosphere model (IPIM). This model describes the transport of the multispecies ionospheric plasma from one hemisphere to the other along convecting and corotating magnetic field lines, taking into account source processes at low altitude such as photoproduction, chemistry, and energization through the coupling with a kinetic code solving the transport of suprathermal electron along the field line. Among the new developments, a 16?moment?based approach is used for the transport equations in order to allow development of strong temperature anisotropy at high altitude and we consider important but often neglected effects, such as inertial acceleration (centrifugal and Coriolis). In this paper, after presenting in detail the principle of the model, we focus on preliminary results showing the original contribution of this new model. For these first runs, we simulate the convection and corotation transport of closed flux tubes in the plasmasphere for tilted/eccentric dipolar magnetic field configuration in solstice and equinox conditions. We follow different flux tubes between 1.2 and 6 Earth Radii (RE) and demonstrate the capability of the model to describe a wide range of density (above 15 orders of magnitude). The relevance of the mathematical approach used is highlighted, as anisotropies can develop above 3000?km in the plasmasphere as a result of the mirroring effect related to the anisotropic pressure tensor. Moreover, we show that the addition of inertial acceleration may become critical to describe plasma interhemispheric transport above 4RE. The ability of the model to describe the external plasmasphere is demonstrated, and innovative studies are foreseen, regarding the dynamics of the plasma along the magnetic field lines (in particular interhemispheric exchanges and ?opening?/?closure? of a flux tube).  
  Programme 312  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2169-9380 ISBN 2169-9380 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6855  
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Author Jourdain Bruno, Preunkert Susanne, Cerri Omar, Castebrunet Hlne, Udisti Roberto, Legrand Michel, doi  openurl
  Title Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles Type Journal Article
  Year 2008 Publication J. Geophys. Res. Abbreviated Journal J. Geophys. Res.  
  Volume 113 Issue D14 Pages D14308 -  
  Keywords (down) Central Antarctica, size segregated aerosol, sea-salt fractionation, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0345 Atmospheric Composition and Structure: Pollution: urban and regional, 4801 Oceanography: Biological and Chemical: Aerosols, 4906 Paleoceanography: Aerosols, 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry, 9310 Geographic Location: Antarctica, 4207 Oceanography: General: Arctic and Antarctic oceanography, 3300 Atmospheric Processes,  
  Abstract The origin of sea-salt aerosol that reaches the high Antarctic plateau and is trapped in snow and ice cores remains still unclear. In particular, the respective role of emissions from the open ocean versus those from the sea-ice surface is not yet quantified. To progress on this question, the composition of bulk and size-segregated aerosol was studied in 2006 at the Concordia station (75S, 123E) located on the high Antarctic plateau. A depletion of sulfate relative to sodium with respect to the seawater composition is observed on sea-salt aerosol reaching Concordia from April to September. That suggests that in winter, when the sea-salt atmospheric load reaches a maximum, emissions from the sea-ice surface significantly contribute to the sea-salt budget of inland Antarctica.
 
  Programme 414;903;1181  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher AGU Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0148-0227 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 1693  
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Author Sibuet J.C., Hsu S.K. & Debayle E. openurl 
  Title Geodynamic context of the Taiwan orogen Type Journal Article
  Year 2004 Publication Geophysical Monograph Series Abbreviated Journal AGU monograph.  
  Volume 149 Issue Pages 127-158  
  Keywords (down) Cenozoic ; Tertiary ; upper Tertiary ; Neogene ; Phanerozoic ; Mesozoic ; West Pacific ; Pacific Ocean ; China ; Asia ; Far East ; pH ; direction ; extremities ; Thick plate ; slabs ; models ; Wave velocity ; S-waves ; subsidence ; subduction ; shorelines ; continental shelf ; rifting ; Timing ; Miocene ; Cretaceous ; subduction zones ; geodynamics ; South China Sea ; China Sea ; Northern China ; Japan ; Taiwan  
  Abstract AGU Geophysical Monograph Series” 149, ''Continent-Ocean interactions within the East Asian Marginal Seas '', Edited by P. Cliff

Four independent arguments suggest that the Ryukyu subduction zone extended from Japan to southwest Taiwan (118°E) from the late Cretaceous to early Miocene (17-18 Ma): i) An analysis of the structure and timing of rifting in the basins of the East Asia continental shelf and west of Taiwan shows that they are located within four belts parallel to the mainland Chinese shoreline, which becomes younger oceanward since early Tertiary. Ridges with volcanic products are present between these belts. We interpret these basins and associated ridges as relict backarc basins and arcs of the Ryukyu subduction system. ii) Subsidence curves across west Taiwan Basins show that rifting ceased 17-18 Ma. iii) A new shear wave velocity model suggests that the Ryukyu slab extended in the past southwest of Taiwan, beneath the northern China Sea margin. iv) A deep seismic line shot across the north-eastern South China Sea margin also suggests that this margin was active in the past. We conclude that about 15-20 Ma, the southwestern extremity of the Ryukyu subduction zone jumped from 118°E (southwest of the Tainan Basin) to 126°E (where the present-day trend of the Ryukyu subduction zone changes direction). Since that time, the southwestern extremity of the Ryukyu subduction zone continuously moved westwards to its present-day location at 122°E. Since the beginning of formation of proto-Taiwan during late Miocene (9 Ma), the subducting PH Sea plate moved continuously through time in a N307° direction at 5.6 cm/yr with respect to EU, tearing the EU plate.
 
  Programme 906  
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  Corporate Author Thesis Bachelor's thesis  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0065-8448 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 2786  
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Author Hosie Graham, Koubbi Philippe, Riddle Martin, Ozouf-Costaz Catherine, Moteki Masato, Fukuchi Mitsuo, Ameziane Nadia, Ishimaru Takashi, Goffart Anne, doi  openurl
  Title CEAMARC, the Collaborative East Antarctic Marine Census for the Census of Antarctic Marine Life (IPY # 53): An overview Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 75-87  
  Keywords (down) CEAMARC, CAML, Marine biodiversity, Pelagic, Benthos,  
  Abstract The Census for Antarctic Marine Life (CAML, IPY Project 53) aimed to investigate the distribution and abundance of Antarctic marine biodiversity and how it will be affected by climate change. It was a major ship-based research programme in the austral summer of 20072008 involving scientists from 30 countries and 19 vessels. The Collaborative East Antarctic Marine Census (CEAMARC) was a multinational contribution to CAML involving scientists and students from several nations using three ships from Australia, Japan and France surveying the one area. This collaboration was a highly coordinated and comprehensive survey of the plankton, fish, benthos, oceanography and geophysical conditions of the waters north of Terre Adélie and George V Land of Eastern Antarctica. CEAMARC has provided a robust benchmark of the marine life in this poorly studied sector and will help to establish the monitoring of future changes in this region.  
  Programme 1124;1142  
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  Corporate Author Thesis Bachelor's thesis  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3316  
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Author David Grémillet, Aurore Ponchon, Michelle Paleczny, Maria-Lourdes D. Palomares, Vasiliki Karpouzi, Daniel Pauly doi  isbn
openurl 
  Title Persisting Worldwide Seabird-Fishery Competition Despite Seabird Community Decline Type Journal
  Year 2018 Publication Current Biology Abbreviated Journal  
  Volume 28 Issue 24 Pages 4009-4013.e2  
  Keywords (down) catch reconstructions energetics food competition global fisheries marine management ocean conservation overfishing Sea Around Us seabird community Threatened species  
  Abstract  
  Programme 388  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0960-9822 ISBN 0960-9822 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7647  
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Author Marine Desprez, Stéphanie Jenouvrier, Christophe Barbraud, Karine Delord, Henri Weimerskirch doi  isbn
openurl 
  Title Linking oceanographic conditions, migratory schedules and foraging behaviour during the non-breeding season to reproductive performance in a long-lived seabird Type Journal
  Year 2018 Publication Functional Ecology Abbreviated Journal  
  Volume 32 Issue 8 Pages 2040-2053  
  Keywords (down) carry-over effect migration phenology protandry reproductive performance sea surface temperature sex Thalassarche melanophris  
  Abstract Studies of the mechanisms underlying climate-induced population changes are critically needed to better understand and accurately predict population responses to climate change. Long-lived migratory species might be particularly vulnerable to climate change as they are constrained by different climate conditions and energetic requirements during the breeding and non-breeding seasons. Yet, most studies primarily focus on the breeding season of these species life cycle. Environmental conditions experienced in the non-breeding season may have downstream effects on the other stages of the annual life cycle. Not investigating such effects may potentially lead to erroneous inferences about population dynamics. Combining demographic and tracking data collected between 2006 and 2013 at Kerguelen Island on a long-lived migratory seabird, the Black-Browed Albatross (Thalassarche melanophris), we investigated the links between sea surface temperature during the non-breeding season and behavioural and phenological traits (at-sea behaviour and migratory schedules) while accounting for different responses between birds of different sex and reproductive status (previously failed or successful breeders). We then explored whether variation in the foraging behaviour and timing of spring migration influenced subsequent reproductive performance. Our results showed that foraging activity and migratory schedules varied by both sex and reproductive status suggesting different energetic requirements and constraints among individuals. Higher sea surface temperatures during late winter, assumed to reflect poor winter conditions, were associated with an earlier departure from the wintering grounds and an extended pre-breeding period. However, an earlier spring migration and an earlier return to Kerguelen grounds were associated with a lower breeding success. Our results highlighted that behaviour during some periods of the non-breeding season, particularly towards the end of the wintering period and the pre-breeding period, had a significant effect on the subsequent reproductive success. Therefore, caution needs to be given to all stages of the annual cycle when predicting the influence of climate on population dynamics. A plain language summary is available for this article.  
  Programme 109  
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  Series Volume Series Issue Edition  
  ISSN 1365-2435 ISBN 1365-2435 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7189  
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Author Annabel Rixen, Sylvie Blangy doi  openurl
  Title Life after Meadowbank: Exploring gold mine closure scenarios with the residents of Qamini’tuaq (Baker Lake), Nunavut Type Journal
  Year 2016 Publication The Extractive Industries and Society Abbreviated Journal  
  Volume 3 Issue 2 Pages 297-312  
  Keywords (down) Caribou livelihoods Future scenarios Inuit well-being Mine closure Participatory action research Remediation  
  Abstract Mining development in the Canadian Arctic is commonly portrayed as a source of jobs and development for Northern communities. Yet its broader impacts on community well-being, especially after mine closure, remain understudied. This article presents post-mining scenarios as envisioned by the Inuit community of Qamini'tuaq (Baker Lake), 3 years before the Meadowbank gold mine's anticipated closure. Study participants rated mine closure impacts on the “Well-Being Wheel”, an evaluation tool co-designed with the authors and featuring five axes: Family Life, Jobs, Food Independence, Health and Learning (all closely tied to caribou-based subsistence lifestyles). Participants also explored best-case and worst-case outcomes. All scenarios highlighted far-reaching impacts on diverse aspects of Inuit well-being. A pessimistic scenario signified a sudden surge in unemployment, with stresses on mental health, family life and food security. An optimistic scenario promised new business development, social service support, and the resurgence of caribou herds. We conclude that in Qamini’tuaq, mining has failed to produce lasting “social and economic development” when we consider its holistic impacts on well-being and subsistence lifestyles. Yet participatory scenario construction may foster effective cross-sector collaboration in anticipation of mine closure. We recommend the strengthening of essential social services and local caribou livelihoods as a strategy to improve post-mining outcomes.  
  Programme 1193  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2214-790X ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6044  
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Author Legrand Michel, Gros Valérie, Preunkert Susanne, Sarda-Estève Roland, Thierry Anne-Mathilde, Pépy Guillaume, Jourdain B, pdf  doi
openurl 
  Title A reassessment of the budget of formic and acetic acids in the boundary layer at Dumont d'Urville (coastal Antarctica): The role of penguin emissions on the budget of several oxygenated volatile organic compounds Type Journal Article
  Year 2012 Publication Journal of Geophysical Research: Atmospheres Abbreviated Journal  
  Volume 117 Issue D6 Pages D06308-  
  Keywords (down) carboxylic acids, formic and acetic acids, ornithogenic soil emission, oxygenated volatile compounds, 0315 Biosphere/atmosphere interactions, 0330 Geochemical cycles, 0365 Troposphere: composition and chemistry,  
  Abstract Initiated in 1997, the year-round study of formic and acetic acids was maintained until 2011 at the coastal Antarctic site of Dumont d'Urville. The records show that formic and acetic acids are rather abundant in summer with typical mixing ratios of 200 pptv and 700 pptv, respectively. With the aim to constrain their budget, investigations of their potential marine precursors like short-chain alkenes and acetaldehyde were initiated in 2011. Acetic acid levels in December 2010 were four times higher than those observed over summers back to 1997. These unusually high levels were accompanied by unusually high levels of ammonia, and by an enrichment of oxalate in aerosols. These observations suggest that the guano decomposition in the large penguin colonies present at the site was particularly strong under weather conditions encountered in spring 2010 (important snow storms followed by sunny days with mild temperatures). Although being dependent on environmental conditions, this process greatly impacts the local atmospheric budget of acetic acid, acetaldehyde, and acetone during the entire summer season. Present at levels as high as 500 pptv, acetaldehyde may represent the major precursor of acetic acid, alkene-ozone reactions remaining insignificant sources. Far less influenced by penguin emissions, the budget of formic acid remains not fully understood even if alkene-ozone reactions contribute significantly.
 
  Programme 414;903  
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  Corporate Author Thesis Bachelor's thesis  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2156-2202 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3995  
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Author John P. Whiteman, Seth D. Newsome, Paco Bustamante, Yves Cherel, Keith A. Hobson doi  openurl
  Title Quantifying capital versus income breeding: New promise with stable isotope measurements of individual amino acids Type Journal
  Year 2021 Publication Journal of Animal Ecology Abbreviated Journal  
  Volume 90 Issue 6 Pages 1408-1418  
  Keywords (down) carbon-13 compound-specific isotope analysis CSIA discrimination fasting fractionation nitrogen-15  
  Abstract Capital breeders accumulate nutrients prior to egg development, then use these stores to support offspring development. In contrast, income breeders rely on local nutrients consumed contemporaneously with offspring development. Understanding such nutrient allocations is critical to assessing life-history strategies and habitat use. Despite the contrast between these strategies, it remains challenging to trace nutrients from endogenous stores or exogenous food intake into offspring. Here, we tested a new solution to this problem. Using tissue samples collected opportunistically from wild emperor penguins Aptenodytes forsteri, which exemplify capital breeding, we hypothesized that the stable carbon (δ13C) and nitrogen (δ15N) isotope values of individual amino acids (AAs) in endogenous stores (e.g. muscle) and in egg yolk and albumen reflect the nutrient sourcing that distinguishes capital versus income breeding. Unlike other methods, this approach does not require untested assumptions or diet sampling. We found that over half of essential AAs had δ13C values that did not differ between muscle and yolk or albumen, suggesting that most of these AAs were directly routed from muscle into eggs. In contrast, almost all non-essential AAs differed in δ13C values between muscle and yolk or between muscle and albumen, suggesting de novo synthesis. Over half of AAs that have labile nitrogen atoms (i.e. ‘trophic’ AA) had higher δ15N values in yolk and albumen than in muscle, suggesting that they were transaminated during their routing into egg tissue. This effect was smaller for AAs with less labile nitrogen atoms (i.e. ‘source’ AA). Our results indicate that the δ15N offset between trophic-source AAs (Δ15Ntrophic-source) may provide an index of the extent of capital breeding. The value of emperor penguin Δ15NPro-Phe was higher in yolk and albumen than in muscle, reflecting the mobilization of endogenous stores; in comparison, the value of Δ15NPro-Phe was similar across muscle and egg tissue in previously published data for income-breeding herring gulls Larus argentatus smithsonianus. Our results provide a quantitative basis for using AA δ13C and δ15N, and isotopic offsets among AAs (e.g. Δ15NPro-Phe), to explore the allocation of endogenous versus exogenous nutrients across the capital versus income spectrum of avian reproduction.  
  Programme 109  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1365-2656 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7945  
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