| Records |
| Author |
Pitout F, Marchaudon A, Blelly P-L, Bai X, Forme F, Buchert S C, Lorentzen D A, |
| Title |
Swarm and ESR observations of the ionospheric response to a field-aligned current system in the high-latitude midnight sector
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Type |
Journal Article |
| Year |
2015 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
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| Volume |
42 |
Issue |
11 |
Pages |
4270-4279 |
| Keywords |
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Abstract  |
We present a conjunction between the Swarm fleet and the European Incoherent Scatter Svalbard Radar (ESR) on 9 January 2014. The Swarm orbit in the early phase of the mission gives us the unique opportunity of sequencing the temporal evolution of the observed field-aligned current system in the nightside, near magnetic local midnight. These field-aligned currents are seen to move poleward through the radar field of view and to affect the observed ionosphere. The upward field-aligned current (FAC) is responsible, at least in part, for the heating of the ionospheric electrons. It is less clear whether the downward FAC cools the ionosphere. We use the TRANSCAR model of the ionosphere to quantify the thermoelectric effect that comes into play. Finally, we compare the plasma parameters measured by the Langmuir probe on board Swarm and the ESR and conclude on an agreement within the errors. |
| Programme |
312 |
| 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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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 |
0094-8276 |
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 |
6118 |
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| Author |
Wang Z, Chappellaz J, Park K, Mak J E, |
| Title |
Large Variations in Southern Hemisphere Biomass Burning During the Last 650 Years.
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Type |
Journal Article |
| Year |
2010 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
330 |
Issue |
6011 |
Pages |
1663 -1666 |
| Keywords |
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| Abstract |
We present a 650-year Antarctic ice core record of concentration and isotopic ratios ((13)C and (18)O) of atmospheric carbon monoxide. Concentrations decreased by ~25% (14 ppbv) from mid-1300s to the 1600s, then recovered completely by the late 1800s. (13)C and (18)O decreased by about 2 and 4 respectively from mid-1300s to the 1600s, then increase by about 2.5 and 4 by the late 1800s. These observations and isotope mass balance model results imply that large variations in the degree of biomass burning in the Southern Hemisphere occurred during the last 650 years, with a decrease by about 50% in the 1600s, an increase of about 100% by the late 1800s, and another decrease by about 70% from the late 1800s to present day.
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| Programme |
458 |
| 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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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 |
0036-8075 |
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 |
2421 |
| Permanent link to this record |
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| Author |
Berthier Etienne, Le Bris Raymond, Mabileau Laure, Testut Laurent, Rmy Frdrique, |
| Title |
Ice wastage on the Kerguelen Islands (49S, 69E) between 1963 and 2006
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Type |
Journal Article |
| Year |
2009 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geophys. Res. |
| Volume |
114 |
Issue |
F3 |
Pages |
F03005 - |
| Keywords |
ice caps, climate change, remote sensing, Kerguelen Islands, Southern Ocean, mass balance, 0720 Cryosphere: Glaciers, 0738 Cryosphere: Ice, 0776 Cryosphere: Glaciology, 0758 Cryosphere: Remote sensing, 0762 Cryosphere: Mass balance, |
| Abstract |
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| Programme |
688 |
| 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 |
1858 |
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| Author |
Beine Harry, Anastasio Cort, Domine Florent, Douglas Thomas, Barret Manuel, France James, King Martin, Hall Sam, Ullmann Kirk, |
| Title |
Soluble chromophores in marine snow, seawater, sea ice and frost flowers near Barrow, Alaska
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Type |
Journal Article |
| Year |
2012 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
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| Volume |
117 |
Issue |
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Pages |
D00R15- |
| Keywords |
OASIS, chromophores, colored dissolved organic matter (CDOM), frost flowers, light absorption, marine, 0317 Atmospheric Composition and Structure: Chemical kinetic and photochemical properties, 0322 Atmospheric Composition and Structure: Constituent sources and sinks, 0736 Cryosphere: Snow (1827, 1863), 0750 Cryosphere: Sea ice (4540), 4807 Oceanography: Biological and Chemical: Chemical speciation and complexation, |
| 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 |
989 |
| Permanent link to this record |
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| Author |
Simpson, W.R.; Alvarez-Aviles, L.; Douglas, T.A.; Sturm, M.; Domine, F. |
| Title |
Halogens in the coastal snow pack near Barrow, Alaska: Evidence for active bromine air-snow chemistry during springtime |
Type |
Journal Article |
| Year |
2005 |
Publication |
Geophysical research letters |
Abbreviated Journal |
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| Volume |
32 |
Issue |
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Pages |
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| Keywords |
0312 Atmospheric Composition and Structure: Air/sea constituent fluxes; 0330 Atmospheric Composition and Structure: Geochemical cycles; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry; 1863 Hydrology: Snow and ice |
| Abstract |
We measured halide concentrations of snow and frost flowers in the vicinity of Barrow, Alaska. We find that the ratio of bromide to sodium in frost flowers is slightly enhanced (?10%) as compared to sea water. In contrast, the ratio of bromide to sodium in some snow samples is more than an order of magnitude enhanced, and in other samples is more than an order of magnitude depleted. We interpret the bromide depleted snow as having been processed by heterogeneous chemistry and providing reactive halogen compounds to the atmosphere. The eventual end product of reactive bromine chemistry is HBr that is then deposited over a wide region, enhancing bromide in inland snow samples. Although frost flowers or open leads are likely to be the original source of halides that become reactive halogen gases, we find that the bromide release often occurs subsequent to production of aerosol from marine sources. |
| Programme |
437 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
American Geophysical Union |
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 |
0094-8276 |
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 |
IPEV @ Thierry.Lemaire @ |
Serial |
5598 |
| Permanent link to this record |
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| Author |
Rolf Weller, Michel Legrand, Susanne Preunkert |
| Title |
Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen |
Type |
Journal |
| Year |
2018 |
Publication |
Atmospheric Chemistry and Physics |
Abbreviated Journal |
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| Volume |
18 |
Issue |
4 |
Pages |
2413-2430 |
| Keywords |
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| Abstract |
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| Programme |
414 |
| 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 |
1680-7316 |
ISBN |
1680-7316 |
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 |
7361 |
| Permanent link to this record |
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| Author |
L. Lescarmontier, B. Legresy, N. W. Young, R. Coleman, L. Testut, C. Mayet, P. Lacroix |
| Title |
Rifting processes and ice-flow modulation observed on Mertz Glacier, East Antarctica |
Type |
Journal |
| Year |
2015 |
Publication |
Journal of Glaciology |
Abbreviated Journal |
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| Volume |
61 |
Issue |
230 |
Pages |
1183-1193 |
| Keywords |
Antarctic glaciology calving crevasses glacier flow glacier mechanics |
| Abstract |
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| 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 |
0022-1430, 1727-5652 |
ISBN |
0022-1430, 1727-5652 |
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 |
7066 |
| Permanent link to this record |
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| Author |
Bozda Ebru, Trampert Jeannot, |
| Title |
Assessment of tomographic mantle models using spectral element seismograms
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Type |
Journal Article |
| Year |
2010 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
0956-540X |
| Volume |
180 |
Issue |
3 |
Pages |
1187-1199 |
| Keywords |
Body waves, Surface waves and free oscillations, Seismic tomography, Computational seismology, Wave propagation, Crustal structure, |
| Abstract |
We investigated the agreement between real seismograms and those predicted by long wavelength mantle models by looking at phase and amplitude differences. We computed full synthetic seismograms using a spectral element method together with 3-D mantle models and the appropriate crustal model on top. We selected differently damped mantle models to see the effect of regularization on the computed seismograms. To check the phase agreement, we measured time-shifts between the real and synthetic surface waves and body wave phases such as P, S and SS using a cross-correlation technique. We also compared the amplitudes of the real and synthetic seismograms to understand how well the models explain not only the phases, but the whole waveforms. 3-D mantle models improve the phase agreement of surface waves in particular. The remaining misfit, however, is still so large that we cannot distinguish between different tomographic models. We suggest that this is mainly due to an imperfect modelling of the crust, and/or source location if body waves are included, which have to be addressed in future inversions. Amplitude mismatches are large, regardless which 3-D mantle model is used. We observe that 3-D scattering or focusing/defocusing effects can only explain half of the surface wave amplitudes whereas body wave amplitudes are dominated by scattering effects. 1-D Q models, particularly in the crust and upper-mantle, strongly affect surface wave amplitudes and have to be modelled properly.
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| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Blackwell Publishing Ltd |
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 |
1365-246X |
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 |
3225 |
| Permanent link to this record |
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| Author |
Lecomte N., Kuntz G., Lambert N., Gendner J.P., Handrich Y., Le Maho Y., & Bost C.A. |
| Title |
Alloparental feeding in the King penguin, Aptenodytes patagonicus. |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal behaviour |
Abbreviated Journal |
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| Volume |
71 |
Issue |
2 |
Pages |
457-462 |
| Keywords |
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| Abstract |
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| Programme |
394 |
| 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 |
0003-3472 |
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 |
3017 |
| Permanent link to this record |
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| Author |
Feng W, Chipperfield M P, Dhomse S, Monge-Sanz B M, Yang X, Zhang K, Ramonet M, |
| Title |
Evaluation of cloud convection and tracer transport in a three-dimensional chemical transport model
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Type |
Journal Article |
| Year |
2010 |
Publication |
Atmos. Chem. Phys. Discuss. |
Abbreviated Journal |
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| Volume |
10 |
Issue |
10 |
Pages |
22953 -22991 |
| Keywords |
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| Abstract |
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| Programme |
416 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Copernicus Publications |
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 |
1680-7375 |
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 |
2680 |
| Permanent link to this record |
