| Records |
| Author |
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| Title |
A peat core Hg stable isotope reconstruction of Holocene atmospheric Hg deposition at Amsterdam Island (37.8oS) |
Type |
Journal |
| Year |
2023 |
Publication |
Geochimica et Cosmochimica Acta |
Abbreviated Journal |
|
| Volume |
341 |
Issue |
|
Pages |
62-74 |
Keywords  |
Hg deposition Hg stable isotopes Peat Rain Southern Hemisphere |
| Abstract |
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| Programme |
1028 |
| 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 |
0016-7037 |
ISBN |
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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 |
8527 |
| Permanent link to this record |
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| Author |
O. I. Berngardt, J.-P. St- Maurice, J. M. Ruohoniemi, A. Marchaudon |
| Title |
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Type |
Journal |
| Year |
2022 |
Publication |
Radio Science |
Abbreviated Journal |
|
| Volume |
57 |
Issue |
9 |
Pages |
e2021RS007338 |
| Keywords |
HF radars ionospheric absorption noise quiet-day curve radiowave propagation |
| Abstract |
Based on ray tracing in a smooth ionosphere described by the IRI-2012 model we have inferred the seasonal-diurnal dynamics of radio noise observed by four mid-latitude high-frequency (HF) radars. In the calculations, noise is assumed to be homogeneous and stationary, but the main contribution comes from the radar skip zone boundary due to focusing radiowaves effect. Noise absorption along the ray path is simulated from the IRI-2012 electron density, and from the molecular nitrogen density and electron temperatures obtained from the NRLMSISE-00 model. Earth magnetic field is not taken into account both in the absorption and ray-tracing calculations due to insufficient accuracy of the ionospheric model. The model results are compared with experimental radar data, and good agreement between the two is demonstrated. It is shown that experimentally observed seasonal and diurnal dynamics of the noise correlates well with model predictions. We demonstrated saturation effect at low noise levels. The model makes it possible to estimate the amount of absorption in D- and E-layers using noise observations at SuperDARN and SuperDARN-like poleward-oriented radars, especially at mid-latitudes. This is important for the retrieval of long term variations in the electron density in the lower ionosphere, by using wide coverage provided by these radars' network. The model also makes it feasible to interpret vertical absorption by experimental noise observations, thereby significantly expanding the capability of HF radars to monitor the lower ionosphere, and to provide data for joint analysis with other data, obtained by these radars at E- and F-layer heights. |
| Programme |
312 |
| Campaign |
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| Address |
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Thesis |
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Place of Publication |
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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 |
1944-799X |
ISBN |
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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 |
8075 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Trace elements in tissues of white-chinned petrels (Procellaria aequinoctialis) from Kerguelen waters, Southern Indian Ocean
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Type |
Journal Article |
| Year |
2014 |
Publication |
POLAR BIOLOGY |
Abbreviated Journal |
Polar Biol. |
| Volume |
37 |
Issue |
6 |
Pages |
763-771- |
| Keywords |
Heavy metals, Seabirds, Procellariiformes, Southern Ocean, Sub-Antarctic Islands, |
| Abstract |
|
| Programme |
109 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer Berlin Heidelberg |
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 |
0722-4060 |
ISBN |
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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 |
5050 |
| Permanent link to this record |
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| Author |
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| Title |
Trace elements in Antarctic fish species and the influence of foraging habitats and dietary habits on mercury levels |
Type |
Journal |
| Year |
2015 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
|
| Volume |
538 |
Issue |
|
Pages |
743-749 |
| Keywords |
Heavy metals Nototheniidae Southern Ocean Stable isotopes |
| Abstract |
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| Programme |
1010 |
| 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 |
0048-9697 |
ISBN |
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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 |
8143 |
| Permanent link to this record |
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| Author |
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| Title |
Metabolic heat loss in southern elephant seals (Mirounga leonina) differs with stage of moult and between habitats |
Type |
Journal |
| Year |
2022 |
Publication |
Journal of Thermal Biology |
Abbreviated Journal |
|
| Volume |
104 |
Issue |
|
Pages |
103183 |
| Keywords |
Heat loss Marine mammals Moult Pinnipeds Skin temperature Thermoregulation |
| Abstract |
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| Programme |
1201 |
| 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 |
0306-4565 |
ISBN |
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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 |
8389 |
| Permanent link to this record |
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| |
| Author |
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| Title |
Origin of the central magnetic anomaly at the Haughton impact structure, Canada
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Type |
Journal Article |
| Year |
2013 |
Publication |
Earth and Planetary Science Letters |
Abbreviated Journal |
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| Volume |
367 |
Issue |
|
Pages |
116-122 |
| Keywords |
Haughton impact structure, magnetic anomaly, rock magnetism, modeling, hydrothermalism, |
| Abstract |
The 23 km-diameter well-preserved Haughton impact structure shows a rather unique combination of a positive magnetic anomaly with a negative gravity anomaly over the center of its central uplift. Using a new ground magnetic dataset and several modeling approaches, we investigate the properties and geometry of its central magnetized source. Our results confirm that a km-sized magnetic body with a narrow near-surface extension is necessary to account for the anomaly. Additional measurements of rock magnetic properties of samples of all lithologies encountered in and outside the crater show that the target sedimentary rocks and the vast majority of the Precambrian basement rocks cannot be the source of the magnetic anomaly. While in larger impact structures such magnetic anomalies are often explained by magmatic mafic intrusions or highly magnetic glass lenses in the impact melt rocks, we propose that impact-generated hydrothermal activity enhanced the magnetization of the highly-porous unmelted uplifted basement rocks. Such a process may be considered for the interpretation of the geophysical signature of planetary impact craters. |
| Programme |
1068 |
| 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 |
0012-821X |
ISBN |
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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 |
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Serial |
3960 |
| Permanent link to this record |
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| Author |
Morin S, Erbland J, Savarino J, Domine F, Bock J, Friess U, Jacobi H-W, Sihler H, Martins J M F, |
| Title |
An isotopic view on the connection between photolytic emissions of NOx from the Arctic snowpack and its oxidation by reactive halogens
|
Type |
Journal Article |
| Year |
2012 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
|
| Volume |
117 |
Issue |
|
Pages |
D00R08- |
| Keywords |
halogen, isotopes, nitrate, ozone, 0305 Atmospheric Composition and Structure: Aerosols and particles (0345, 4801, 4906), 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry, 0454 Biogeosciences: Isotopic composition and chemistry (1041, 4870), 0736 Cryosphere: Snow (1827, 1863), 9315 Geographic Location: Arctic region (0718, 4207), |
| Abstract |
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| Programme |
1017 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
AGU |
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 |
0148-0227 |
ISBN |
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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 |
1881 |
| Permanent link to this record |
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| Author |
Thiebot Jb, Pinaud D, |
| Title |
Quantitative method to estimate species habitat use from light-based geolocation data
|
Type |
Journal Article |
| Year |
2010 |
Publication |
Endangered Species Research |
Abbreviated Journal |
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| Volume |
10 |
Issue |
|
Pages |
341 -353 |
| Keywords |
habitat use, kalman filter, large scale movements, light based geolocation, method, permitted without written consent, publisher, resale republication not, sea surface temperature, state space model, |
| Abstract |
The development of biologging techniques has been instrumental in studying the behaviour of wild animals and interpreting it with respect to the bio-physical features of their habi- tat. Light-based geolocation currently appears to be the only technique suitable for the study of far- ranging small species, particularly marine species, over long periods, but it provides locations with low precision. In this study, we sought to improve the exploitation of these data. Specifically, the goals were to (1) correct rather than reject estimates, especially during equinox periods, (2) perform repro- ducible time-saving routine analyses, and (3) determine the spatial likelihood of the estimations to adapt inferences on habitat use by the population. We therefore applied an existing data-processing method based on spatial template fitting, using Markov Chain Monte Carlo and state-space model- ling (Kalman filter) improved by a facultative sea surface temperature-matching procedure and a land mask. The main functions used for geolocation are grouped under the R package TripEstima- tion, freely available online. We focused on a typical example of animal movement that at present can only be ethically obtained from light-based geolocation. The method made it possible to estimate realistic positions during equinox periods and to routinely process the 12 available datasets. We thus obtained the most probable location for each sunrise/sunset as well as the posterior distribution around each estimated location, allowing an intuitive habitat use investigation at a scale of 100 km. This paper describes the method used and provides the complete and comprehensively annotated commands required for its use.
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| 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 |
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| ISSN |
1613-4796 |
ISBN |
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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 |
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Serial |
418 |
| Permanent link to this record |
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| Author |
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| Title |
Individual migration strategy fidelity but no habitat specialization in two congeneric seabirds |
Type |
Journal |
| Year |
2021 |
Publication |
Journal of Biogeography |
Abbreviated Journal |
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| Volume |
48 |
Issue |
2 |
Pages |
263-275 |
| Keywords |
guillemots light-level geolocation murres Uria aalge Uria lomvia |
| Abstract |
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| Programme |
388 |
| 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 |
1365-2699 |
ISBN |
1365-2699 |
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 |
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Serial |
8025 |
| Permanent link to this record |
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| Author |
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| Title |
Statistical analyses and correlation between tropospheric temperature and humidity at Dome C, Antarctica
|
Type |
Journal Article |
| Year |
2014 |
Publication |
ANTARCTIC SCIENCE |
Abbreviated Journal |
Antarct. Sci. |
| Volume |
26 |
Issue |
03 |
Pages |
290-308 |
| Keywords |
ground-based sensors,, , integrated water vapour, meteorological analyses, radiosonde, space-borne sensors, |
| Abstract |
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| Programme |
910,1013 |
| 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 |
0954-1020 |
ISBN |
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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 |
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Serial |
4500 |
| Permanent link to this record |
