| Records |
| Author |
S. Jevrejeva, A. Matthews, A. Slangen |
| Title |
The Twentieth-Century Sea Level Budget: Recent Progress and Challenges |
Type |
Journal |
| Year |
2017 |
Publication |
Surveys in Geophysics |
Abbreviated Journal |
|
| Volume |
38 |
Issue |
1 |
Pages |
295-307 |
| Keywords |
Data archeology Observing system Sea level budget Sea level rise |
| Abstract |
For coastal areas, given the large and growing concentration of population and economic activity, as well as the importance of coastal ecosystems, sea level rise is one of the most damaging aspects of the warming climate. Huge progress in quantifying the cause of sea level rise and closure of sea level budget for the period since the 1990s has been made mainly due to the development of the global observing system for sea level components and total sea levels. We suggest that a large spread (1.2 ± 0.2–1.9 ± 0.3 mm year−1) in estimates of sea level rise during the twentieth century from several reconstructions demonstrates the need for and importance of the rescue of historical observations from tide gauges, with a focus on the beginning of the twentieth century. Understanding the physical mechanisms contributing to sea level rise and controlling the variability of sea level over the past few 100 years are a challenging task. In this study, we provide an overview of the progress in understanding the cause of sea level rise during the twentieth century and highlight the main challenges facing the interdisciplinary sea level community in understanding the complex nature of sea level changes. |
| Programme |
688 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1573-0956 |
ISBN  |
1573-0956 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7051 |
| Permanent link to this record |
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| Author |
K. Bocchialini, B. Grison, M. Menvielle, A. Chambodut, N. Cornilleau-Wehrlin, D. Fontaine, A. Marchaudon, M. Pick, F. Pitout, B. Schmieder, S. Régnier, I. Zouganelis |
| Title |
Statistical Analysis of Solar Events Associated with Storm Sudden Commencements over One Year of Solar Maximum During Cycle 23: Propagation from the Sun to the Earth and Effects |
Type |
Book Chapter |
| Year |
2017 |
Publication |
Solar Physics |
Abbreviated Journal |
|
| Volume |
293 |
Issue |
5 |
Pages |
75 |
| Keywords |
Earth: SSC geoeffectiveness Solar wind: ICME Sun: CME |
| Abstract |
Taking the 32 storm sudden commencements (SSCs) listed by the International Service of Geomagnetic Indices (ISGI) of the Observatory de l’Ebre during 2002 (solar activity maximum in Cycle 23) as a starting point, we performed a multi-criterion analysis based on observations (propagation time, velocity comparisons, sense of the magnetic field rotation, radio waves) to associate them with solar sources, identified their effects in the interplanetary medium, and looked at the response of the terrestrial ionized and neutral environment. We find that 28 SSCs can be related to 44 coronal mass ejections (CMEs), 15 with a unique CME and 13 with a series of multiple CMEs, among which 19 (68%) involved halo CMEs. Twelve of the 19 fastest CMEs with speeds greater than 1000 km s−1 are halo CMEs. For the 44 CMEs, including 21 halo CMEs, the corresponding X-ray flare classes are: 3 X-class, 19 M-class, and 22 C-class flares. The probability for an SSC to occur is 75% if the CME is a halo CME. Among the 500, or even more, front-side, non-halo CMEs recorded in 2002, only 23 could be the source of an SSC, i.e. 5%. The complex interactions between two (or more) CMEs and the modification of their trajectories have been examined using joint white-light and multiple-wavelength radio observations. The detection of long-lasting type IV bursts observed at metric–hectometric wavelengths is a very useful criterion for the CME–SSC events association. The events associated with the most depressed Dst values are also associated with type IV radio bursts. The four SSCs associated with a single shock at L1 correspond to four radio events exhibiting characteristics different from type IV radio bursts. The solar-wind structures at L1 after the 32 SSCs are 12 magnetic clouds (MCs), 6 interplanetary coronal mass ejections (ICMEs) without an MC structure, 4 miscellaneous structures, which cannot unambiguously be classified as ICMEs, 5 corotating or stream interaction regions (CIRs/SIRs), one CIR caused two SSCs, and 4 shock events; note than one CIR caused two SSCs. The 11 MCs listed in 3 or more MC catalogs covering the year 2002 are associated with SSCs. For the three most intense geomagnetic storms (based on Dst minima) related to MCs, we note two sudden increases of the Dst, at the arrival of the sheath and the arrival of the MC itself. In terms of geoeffectiveness, the relation between the CME speed and the magnetic-storm intensity, as characterized using the Dst magnetic index, is very complex, but generally CMEs with velocities at the Sun larger than 1000 km s−1 have larger probabilities to trigger moderate or intense storms. The most geoeffective events are MCs, since 92% of them trigger moderate or intense storms, followed by ICMEs (33%). At best, CIRs/SIRs only cause weak storms. We show that these geoeffective events (ICMEs or MCs) trigger an increased and combined auroral kilometric radiation (AKR) and non-thermal continuum (NTC) wave activity in the magnetosphere, an enhanced convection in the ionosphere, and a stronger response in the thermosphere. However, this trend does not appear clearly in the coupling functions, which exhibit relatively weak correlations between the solar-wind energy input and the amplitude of various geomagnetic indices, whereas the role of the southward component of the solar-wind magnetic field is confirmed. Some saturation appears for Dst values <−100<−100< -100 nT on the integrated values of the polar and auroral indices. |
| Programme |
139,312 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
Bachelor's thesis |
| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1573-093X |
ISBN |
1573-093X |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
|
Serial |
7013 |
| Permanent link to this record |
| |
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| |
| Author |
Mioara Mandea, Michael Purucker |
| Title |
The Varying Core Magnetic Field from a Space Weather Perspective |
Type |
Journal |
| Year |
2017 |
Publication |
Space Science Reviews |
Abbreviated Journal |
|
| Volume |
214 |
Issue |
1 |
Pages |
11 |
| Keywords |
Core field Dipole decay Secular acceleration Secular variation South Atlantic Anomaly |
| Abstract |
This paper summarizes recent advances in our understanding of geomagnetism, and its relevance to terrestrial space weather. It also discusses specific core magnetic field features such as the dipole moment decay, the evolution of the South Atlantic anomaly, and the location of the magnetic poles that are of importance for the practice of space weather. |
| Programme |
139 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
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Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1572-9672 |
ISBN |
1572-9672 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7522 |
| Permanent link to this record |
| |
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| |
| Author |
Jannik Hansen, Malin Ek, Tomas Roslin, Jérôme Moreau, Maria Teixeira, Olivier Gilg, Niels Martin Schmidt |
| Title |
First Observation of a Four-egg Clutch of Long-tailed Jaeger (Stercorarius longicaudus) |
Type |
Journal |
| Year |
2015 |
Publication |
The Wilson Journal of Ornithology |
Abbreviated Journal |
|
| Volume |
127 |
Issue |
1 |
Pages |
149-153 |
| Keywords |
|
| Abstract |
Long-tailed Jaegers (Stercorarius longicaudus) normally lay one or two eggs (rarely three), with a maximum of two eggs set by the existence of only two brood patches. Here, however, we present the first documentation of a clutch of four eggs in a Long-tailed Jaeger nest found at Zackenberg in northeastern Greenland. |
| Programme |
1036 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1559-4491 |
ISBN |
1559-4491 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
6952 |
| Permanent link to this record |
| |
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| |
| Author |
N. Rieth, N. Vibarel-Rebot, C. Buisson, C. Jaffré, K. Collomp |
| Title |
Caffeine and saliva steroids in young healthy recreationally trained women: impact of regular caffeine intake |
Type |
Journal |
| Year |
2016 |
Publication |
Endocrine |
Abbreviated Journal |
|
| Volume |
52 |
Issue |
2 |
Pages |
391-394 |
| Keywords |
Caffeine Caffeine Intake Cortisol Cortisol Concentration DHEA |
| Abstract |
|
| Programme |
1199 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
|
Edition |
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| ISSN |
1559-0100 |
ISBN |
1559-0100 |
Medium |
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| Area |
|
Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
|
Serial |
7291 |
| Permanent link to this record |
| |
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| |
| Author |
Sabrina Renaud, Ronan Ledevin, Benoit Pisanu, Jean-Louis Chapuis, Petra Quillfeldt, Emilie A. Hardouin |
| Title |
Divergent in shape and convergent in function: Adaptive evolution of the mandible in Sub-Antarctic mice |
Type |
Journal |
| Year |
2018 |
Publication |
Evolution |
Abbreviated Journal |
|
| Volume |
72 |
Issue |
4 |
Pages |
878-892 |
| Keywords |
Adaptive convergence biomechanics geometric morphometrics mouse mandible Mus musculus domesticus |
| Abstract |
Convergent evolution in similar environments constitutes strong evidence of adaptive evolution. Transported with people around the world, house mice colonized even remote areas, such as Sub-Antarctic islands. There, they returned to a feral way of life, shifting towards a diet enriched in terrestrial macroinvertebrates. Here, we test the hypothesis that this triggered convergent evolution of the mandible, a morphological character involved in food consumption. Mandible shape from four Sub-Antarctic islands was compared to phylogeny, tracing the history of colonization, and climatic conditions. Mandible shape was primarily influenced by phylogenetic history, thus discarding the hypothesis of convergent evolution. The biomechanical properties of the jaw were then investigated. Incisor in-lever and temporalis out-lever suggested an increase in the velocity of incisor biting, in agreement with observations on various carnivorous and insectivorous rodents. The mechanical advantage related to incisor biting also revealed an increased functional performance in Sub-Antarctic populations, and appears to be an adaptation to catch prey more efficiently. The amount of change involved was larger than expected for a plastic response, suggesting microevolutionary processes were evolved. This study thus denotes some degree of adaptive convergent evolution related to changes in habitat-related changes in dietary items in Sub-Antarctic mice, but only regarding simple, functionally relevant aspects of mandible morphology. |
| Programme |
136 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
|
Edition |
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| ISSN |
1558-5646 |
ISBN |
1558-5646 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7023 |
| Permanent link to this record |
| |
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| Author |
Cyril Palerme, Chantal Claud, Norman B. Wood, Tristan L’Ecuyer, Christophe Genthon |
| Title |
How Does Ground Clutter Affect CloudSat Snowfall Retrievals Over Ice Sheets? |
Type |
Journal |
| Year |
2018 |
Publication |
IEEE Geoscience and Remote Sensing Letters |
Abbreviated Journal |
|
| Volume |
16 |
Issue |
3 |
Pages |
342-346 |
| Keywords |
Antarctica atmospheric temperature climatology clouds Clouds CloudSat CloudSat products CloudSat retrievals CloudSat snowfall observations CloudSat snowfall retrievals Clutter glaciology ground clutter ground clutter contamination ice Ice ice sheets land/ice surface meteorological radar remote sensing by radar snow Snow snowfall snowfall climatologies snowfall rate spaceborne radar spaceborne snowfall observations Surface contamination Surface topography |
| Abstract |
CloudSat has provided the first spaceborne snowfall observations in polar regions. Nevertheless, CloudSat retrievals may be affected by ground clutter even if the snowfall rate at the surface is estimated from the reflectivity measured at about 1200 m above land/ice surface. In this study, the impact of ground clutter contamination on CloudSat snowfall retrievals over the Antarctic and Greenland ice sheets is investigated. Our results suggest that ground clutter affects CloudSat snowfall observations over some areas, particularly over complex terrain such as mountain ranges and fjords. Over these areas, the snowfall rates deduced from CloudSat observations can be, therefore, significantly overestimated. This has implications when developing snowfall climatologies from CloudSat products. |
| Programme |
1013 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
|
Edition |
|
| ISSN |
1558-0571 |
ISBN |
1558-0571 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7481 |
| Permanent link to this record |
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| |
| Author |
Rémi Fay, Christophe Barbraud, Karine Delord, Henri Weimerskirch |
| Title |
From early life to senescence: individual heterogeneity in a long-lived seabird |
Type |
Journal |
| Year |
2018 |
Publication |
Ecological Monographs |
Abbreviated Journal |
|
| Volume |
88 |
Issue |
1 |
Pages |
60-73 |
| Keywords |
capture–mark–recapture delayed density effect Diomedea exulans finite mixture model individual quality population dynamics Wandering Albatross |
| Abstract |
Although population studies have long assumed that all individuals of a given sex and age are identical, ignoring among-individual differences may strongly bias our perception of eco-evolutionary processes. Individual heterogeneity, often referred to as individual quality, has received increasing research attention in the last decades. However, there are still substantial gaps in our current knowledge. For example, there is little information on how individual heterogeneity influences various life-history traits simultaneously, and studies describing individual heterogeneity in wild populations are generally not able to jointly identify possible sources of this variation. Here, based on a mark–recapture data set of 9,685 known-aged Wandering Albatrosses (Diomedea exulans), we investigated the existence of individual quality over the entire life cycle of this species, from early life to senescence. Using finite mixture models, we investigated the expression of individual heterogeneity in various demographic traits, and examined the origin of these among-individual differences by considering the natal environmental conditions. We found that some individuals consistently outperformed others during most of their life. In old age, however, the senescence rate was stronger in males that showed high demographic performance at younger ages. Variation in individual quality seemed strongly affected by extrinsic factors experienced during the ontogenetic period. We found that individuals born in years with high population density tended to have lower performances during their lifespan, suggesting delayed density dependence effects through individual quality. Our study showed that among-individual differences could be important in structuring individual life history trajectories, with substantial consequences at higher ecological levels such as population dynamics. |
| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
|
| ISSN |
1557-7015 |
ISBN |
1557-7015 |
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7190 |
| Permanent link to this record |
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| Author |
N. R. Zelinskiy, N. G. Kleimenova, O. V. Kozyreva, S. M. Agayan, Sh. R. Bogoutdinov, A. A. Soloviev |
| Title |
Algorithm for recognizing Pc3 geomagnetic pulsations in 1-s data from INTERMAGNET equatorial observatories |
Type |
Journal |
| Year |
2014 |
Publication |
Izvestiya, Physics of the Solid Earth |
Abbreviated Journal |
|
| Volume |
50 |
Issue |
2 |
Pages |
240-248 |
| Keywords |
Fuzzy Bound Fuzzy Logic Method Local Magnetic Time Magnetic Observatory Solid Earth |
| Abstract |
The methods are suggested for analyzing the data of three-component geomagnetic observations in order to automatically recognize time anomalies-pulsations in the geomagnetic field. These methods include preliminary bandpass filtering of the data, calculating the eigenvalues of the covariance matrix of magnetic components in a moving time window, computing the generalized variance of the eigenvalues (generalization is understood as raising to a power that is distinct from the traditional power of 2), averaging the variance, and identifying the time intervals marked by the presence of pulsations by the criterion of the averaged variance of eigenvalues to exceed a certain threshold specified by the fuzzy-logic methods. |
| Programme |
139 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1555-6506 |
ISBN |
1555-6506 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
|
Serial |
7441 |
| Permanent link to this record |
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| |
| Author |
Pierre Blévin, Scott A. Shaffer, Paco Bustamante, Frédéric Angelier, Baptiste Picard, Dorte Herzke, Børge Moe, Geir Wing Gabrielsen, Jan Ove Bustnes, Olivier Chastel |
| Title |
Organochlorines, perfluoroalkyl substances, mercury, and egg incubation temperature in an Arctic seabird: Insights from data loggers |
Type |
Journal |
| Year |
2018 |
Publication |
Environmental Toxicology and Chemistry |
Abbreviated Journal |
|
| Volume |
37 |
Issue |
11 |
Pages |
2881-2894 |
| Keywords |
Behavioral toxicology Black-legged kittiwake Brood patch Endocrine disruptors Hatching success Organic contamination Trace metals Wildlife toxicology |
| Abstract |
In birds, incubation-related behaviors and brood patch formation are influenced by hormonal regulation such as prolactin secretion. Brood patch provides efficient heat transfer between the incubating parent and the developing embryo in the egg. Importantly, several environmental contaminants are already known to have adverse effects on avian reproduction. However, relatively little is known about the effect of contaminants on incubation temperature (Tinc) in wild birds. By using temperature thermistors placed into artificial eggs, we investigated whether the most contaminated parent birds are less able to provide appropriate egg warming and thus less committed to incubating their clutch. Specifically, we investigated the relationships among 3 groups of contaminants (organochlorines, perfluoroalkyl substances [PFASs], and mercury [Hg]) with Tinc and also with prolactin concentrations and brood patch size in incubating Arctic black-legged kittiwakes (Rissa tridactyla). Our results reveal that among the organochlorines considered, only blood levels of oxychlordane, the main metabolite of chlordane, a banned pesticide, were negatively related to the minimum incubation temperature in male kittiwakes. Levels of PFASs and Hg were unrelated to Tinc in kittiwakes. Moreover, our study suggests a possible underlying mechanism: since we reported a significant and negative association between blood oxychlordane concentrations and the size of the brood patch in males. Finally, this reduced Tinc in the most oxychlordane-contaminated kittiwakes was associated with a lower egg hatching probability. Environ Toxicol Chem 2018;37:2881–2894. © 2018 SETAC |
| Programme |
330 |
| Campaign |
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| Address |
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| Corporate Author |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1552-8618 |
ISBN |
1552-8618 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
|
Serial |
7242 |
| Permanent link to this record |
