| |
Records |
Links |
|
Author |
Marc Delmotte, Jošt V. Lavrič, Andrew C. Manning, Laurent Bopp, Michel Ramonet, Martina Schmidt, Willi A. Brand, Cyrille Vuillemin, Claire Kaiser, Mathilde Grand, Claire Peureux,and Benoit Wastine |
|
| |
Title |
A NEW ATMOSPHERIC MONITORING STATION IN IVITTUUT, SOUTHERN GREENLAND |
Type |
Conference - International - Poster |
| |
Year |
2009 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
In summer 2007 we have established a new atmospheric monitoring station in Ivittuut (61.21°N, 48.17°W), on the western coast of South Greenland. The motivation for choosing this location was to study the role of the North Atlantic Ocean in the global and regional carbon cycle and to add a continuous measurement site in a still uncovered area. This work is part of the EU CarboOcean IP project, and was endorsed by the International Polar Year through the Polarcat project.
High precision CO2 and O2 analyzers have been developed at LSCE and installed on site together with meteorological sensors. Regular flask samples are done and independently analyzed at LSCE and MPI-BGC for quality control, and to provide complementary trace gases and isotopic measurements. Since September 2007, continuous measurements of CO2 and O2 have been recorded.
We will present the Ivittuut continuous CO2 and O2 data as well as the flask measurements, and compare both data sets to illustrate their reliability and precision. A preliminary data filtering attempt based on meteorological criteria (wind speed and direction) used to identify the origin of air masses (and corresponding CO2 and O2 concentration levels) will be compared to back trajectories from the Hysplit4 model. Concurrent measurements of atmospheric CO2 and O2 allow to calculate the Atmospheric Potential Oxygen (APO), a tracer of air-sea gas exchange of O2, and from which, given certain assumptions, the strength of marine biological activity can be elucidated. A comparison of the data-derived APO and the one obtained with the OPA-PISCES coupled ocean circulation/biogeochemical model will be presented. Based on our APO results, we will suggest an estimate of oceanic and land biotic carbon fluxes. |
|
| |
Programme |
439 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition  |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
6037 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Jošt V. Lavrič , Marc Delmotte , Michel Ramonet , Martina Schmidt , Willi A. Brand , Andrew Manning and Olivier Cloué |
|
| |
Title |
One year of atmospheric monitoring in the southern Greenland station of Ivittuut |
Type |
Conference - International - Poster |
| |
Year |
2006 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
Continuous measurements of atmospheric CO2 and O2 have been conducted in Ivittuut (Southern Greenland, 61.21°, -48.17°) since September 2007, after the installation of two high precision instruments. Data quality of the in situ time series have been evaluated using high pressure cylinders for inter comparison as well as flasks samples collected regularly on site and analysed for trace gases at LSCE and for O2/N2 at Max Planck Institute Jena. The results of these quality controls will be presented as well as the records from others species analysed in the flasks (CH4, N2O, SF6, CO, H2 and isotopic composition of CO2)
Based on the meteorological data that are also recorded on site, we will present a first interpretation of the data series. The meteorological data, mainly the wind speed and direction are used as criteria to filter the data with regard to their air masses geographical origin (ocean or continental) and to remove potential local contamination sources. We will present a first evaluation of these analyses and a cross check comparison with Hysplit4 model back-trajectories. |
|
| |
Programme |
439 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
6038 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Alberto Mancini, Giuliano Nucciarelli, Mauro Dolci, Gilles Durand |
|
| |
Title |
INFRARED TELESCOPE “MAFFEI” (FORMERLY IRAIT) ACTIVITY PROGRAM FOR SUMMER CAMPAIGN 2009-2010 |
Type |
Report |
| |
Year |
2009 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
|
|
| |
Programme |
1040 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
6041 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
P. Tremblin (CEA Saclay), N. Schneider (CEA Saclay), V. Minier (CEA Saclay), G. Durand (CEA Saclay), Y. Reinert (CEA Saclay), C. Veyssière (CEA Saclay), M. Busso (Perugia Univ.), L. Sabbatini (Roma Tre Univ.), J. Storey (UNSW), J. Urban (Chalmers), P. Calisse (Cardiff Univ.) |
|
| |
Title |
Dome C : the best accessible site on Earth for submillimetre astronomy |
Type |
Conference - National - Poster |
| |
Year |
2009 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
The Italian-French station Concordia at Dome C is the perfect site to conduct submillimetre observations.
Site testing started intensively in 2007-2008 and is still in progress. After SUMMIT08, the next step is to determine the stability of sky brightness with CAMISTIC, a bolometer camera, which will be installed on IRAIT, an infrared telescope built at Dome C.
To complete the Herschel Space Observatory and the ALMA interferometer observations, a large telescope facility at Concordia would study in the submillimetre range :
The early evolution of galaxies and the Universe
The formation of stars
The evolution of interstellar matter
The histories of planetary systems |
|
| |
Programme |
1040 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
6046 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Gilles Durand, Mauro Dolci, Giuliano Nucciarelli, Lucia Sabbatini |
|
| |
Title |
Progress report : Coordination of IRAIT based activity for campaigns 2009/2012 Teramo 09&10 September 2009 |
Type |
Report |
| |
Year |
2006 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
This reports the first coordination meeting of the IRAIT based experiments.
Goal : temptative view of the programs at 3 year distance, in order to coordinate the activities of Agencies and institutes.
Detailed activity and requirements for agencies for the two next summer campaigns.
The defrosting of telescopes were discussed including COCHISE and IRAIT
The Future astrophysic shelter was discussed
The cooling system and power requirements were discussed. |
|
| |
Programme |
1040 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
6047 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Bost, C.A.; Cott, C.; Bailleul, F.; Cherel, Y.; Charrassin, J.B.; Guinet, C.; Ainley, D.G.; Weimerskirch, H. |
|
| |
Title |
The importance of oceanographic fronts to marine birds and mammals of the southern oceans |
Type |
Journal Article |
| |
Year |
2009 |
Publication |
Journal of Marine Systems |
Abbreviated Journal |
Special Issue on Observational Studies of Oceanic Fronts |
|
| |
Volume |
78 |
Issue |
3 |
Pages |
363-376 |
|
| |
Keywords |
Seabird; Sea mammals; Fronts; Foraging strategies; Bio-logging |
|
| |
Abstract |
During the last 30years, at-sea studies of seabirds and marine mammals in the oceans south of the Subtropical Front have described an association with major frontal areas. More recently, the advancement in microtechnology has allowed the tracking of individuals and investigations into how these marine predators actually use the frontal zones. In this review, we examine 1) the relative importance to apex predators of the different frontal zones in terms of spatial distribution and carbon flux; 2) the processes that determine their preferential use; and 3) how the mesoscale dynamics of frontal structures drive at-sea foraging strategies of these predators. We review published results from southern waters and place them in a broader context with respect to what has been learned about the importance of fronts in oceans farther north.
Some fronts constitute important boundaries for seabird communities in southern waters. At a mesoscale the maximum values of seabird diversity and abundance correspond to the location of the main fronts. At-sea surveys show a strong curvilinear correlation between seabird abundance and sea surface temperatures. High mean species richness and diversity for whales and seabirds are consistently associated with the southern water mass boundary of the Antarctic Circumpolar Current, the Subtropical Front and the Subantarctic Front; in the case of the Polar Front mean seabird densities are more variable. At small-scales, variation in seabird occurrence has been directly related to the processes at fronts in a limited number of cases. A significant positive relation was found between some plankton feeding species and frontal temperature gradient-phytoplankton variables.
Telemetric studies have revealed that several apex predators (penguins, albatrosses, seals) perform long, directed foraging trips either to the Subtropical front or Polar Front, depending on locality. Seabirds with low flight costs, such as albatrosses, are able to reach fronts at long distances from colonies, showing variable foraging strategies as a function of the distances involved. Diving birds such as King penguins, that travel at a higher cost and lower speed, rely on the predictable spatial distribution of mesopelagic fish found close to the Polar Front. They may use the currents associated with eddies as oceanographic cues in the active search for frontal zones. Once in these areas they dive preferentially in and below the depth of the thermocline where catches per unit effort are high. Elephant seals concentrate foraging activity principally inside or at the boundary of cyclonic eddies. These mesoscale features appear to offer exceptional productivity favourable for foraging by various diving top predators.
The connection between biophysical parameters at fronts and predators is likely to be made through biological enhancement. Top predators appear to forage at locations where prey are advected by physical processes and others where prey are produced locally. Long-term research on at-sea distributions and demographic parameters of top predators are essential to assess the consequences of potential shift in front distributions in relation to global warming. Such environmental changes would add to the impact of fish extraction by the industrial fisheries on the southern food webs. |
|
| |
Programme |
109; 394 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0924-7963 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
6049 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Groscolas R, Viera V, Guerin N, Handrich Y, Côté S D, |
|
| |
Title |
Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins.
|
Type |
Journal Article |
| |
Year |
2010 |
Publication |
The Journal of experimental biology |
Abbreviated Journal |
J. Exp. Biol. |
|
| |
Volume |
213 |
Issue |
1 |
Pages |
153 -60 |
|
| |
Keywords |
Animals, Energy Metabolism, Fasting, Fasting: physiology, Female, Heart Rate, Male, Nesting Behavior, Nesting Behavior: physiology, Spheniscidae, Spheniscidae: physiology, |
|
| |
Abstract |
Heart rate (f(H)) measurement offers the possibility to monitor energy expenditure (EE) in wild animals if the EE/f(H) relationship for the species, physiological stages and activities of interest is known. This relationship has been extensively studied using oxygen consumption rate ( ) measurement in captive, repeatedly handled king penguins (Aptenodytes patagonicus). Unfortunately, the potential effects of stress on the observed relationships resulting from handling and confinement were not considered. This study is the first involving undisturbed animals, and determines the EE/f(H) relationship in naturally fasting and freely incubating or captivity-acclimatized male and female king penguins. EE determination was based on (1) the measurement of body mass loss during periods of phase II fasting, and (2) the calculation of its energy equivalent from changes in body composition, i.e. 23.9 kJ g(-1). f(H) levels in freely incubating and captivity-acclimatized birds were found to be 50-70% lower than those previously reported for resting king penguins during measurements. Significant EE/f(H) relationships were found in freely incubating and captive males and females (R(2)=0.59 to 0.84), with no difference observed between genders. The best overall relationship was obtained by including fasting duration (t, days) in the model: EE=818+43.7xf(H)+36.3t-1.4txf(H) (R(2)=0.91). This equation yielded EE estimates approximately 26% higher than the previously reported 'best' predictive equation in king penguins, and even more so when f(H) was low. This result suggests that stress induces a disproportionate increase of f(H) vs O(2) consumption, and that the use of EE/f(H) relationships obtained in stressed birds could lead to underestimated EE values.
|
|
| |
Programme |
119;394 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0022-0949 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
71 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Lévêque Jean-Jacques, Maggi Alessia, Souriau Annie, |
|
| |
Title |
Seismological constraints on ice properties at Dome C, Antarctica, from horizontal to vertical spectral ratios
|
Type |
Journal Article |
| |
Year |
2010 |
Publication |
Antarctic Science |
Abbreviated Journal |
Antarct. Sci. |
|
| |
Volume |
22 |
Issue |
05 |
Pages |
572 -579 |
|
| |
Keywords |
Antarctic seismological stations, Concordia, firn, seismic ambient noise, |
|
| |
Abstract |
The French-Italian Concordia (CCD) seismological station at Dome C is one of two observatories setup on the ice cap in the interior of the Antarctic continent. We analysed the seismic signal due to ambient noise at this station and at three temporary stations 5 km away from Concordia, in order to specify the ice properties beneath them. A method based on the horizontal to vertical (H/V) spectral ratio, commonly used to analyse soil response in seismic regions, was applied to the Antarctic stations. The main peak in the spectral ratios is observed at frequencies 6.7–8 Hz at the Dome C stations, but it is not observed at another station on the ice cap, QSPA, where the sensor is buried at 275 m depth. This peak can be explained by a 23 m thick unconsolidated snow or firn layer with a low S-wave velocity of 0.7 km s-1, overlying a consolidated layer with S-wave velocity 1.8 km s-1. Despite the non-uniqueness of the solutions obtained by fitting the H/V spectra, this model is preferred because the depth of the velocity contrast coincides with the density at which ice particles arrange themselves in a continuous, dense lattice. A small variability of this structure is observed around Dome C. |
|
| |
Programme |
133;906 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0954-1020 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
89 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
JJ. Leveque, A. Maggi, A. Souriau, G. Wittlinger |
|
| |
Title |
CASE-IPY: autonomous seismic stations newly deployed on the East Antarctic Plateau. |
Type |
Conference - International - Poster |
| |
Year |
2010 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
|
|
| |
Abstract |
EGU General Assembly, Vienna, 2010 |
|
| |
Programme |
906 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
91 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Koubbi Philippe, Ozouf-Costaz Catherine, Goarant Anne, Moteki Masato, Hulley Percy-Alexander, Causse Romain, Dettai Agns, Duhamel Guy, Pruvost Patrice, Tavernier Eric, Post Alexandra L, Beaman Robin J, Rintoul Stephen R, Hirawake Toru, Hirano Daisuke, Ishimaru Takashi, Riddle Martin, Hosie Graham, |
|
| |
Title |
Estimating the biodiversity of the East Antarctic shelf and oceanic zone for ecoregionalisation: Example of the ichthyofauna of the CEAMARC (Collaborative East Antarctic Marine Census) CAML surveys
|
Type |
Journal Article |
| |
Year |
2010 |
Publication |
Polar Science |
Abbreviated Journal |
|
|
| |
Volume |
4 |
Issue |
2 |
Pages |
115 -133 |
|
| |
Keywords |
East Antarctic shelf, Ichthyofauna, Ecoregionalisation, Generalized dissimilarity modeling, Dumont d'Urville Sea, |
|
| |
Abstract |
Ecoregions are defined in terms of community structure as a function of abiotic or even anthropogenic forcing. They are meso-scale structures defined as the potential habitat of a species or the predicted communities geographic extent. We assume that they can be more easily defined for long-lived species, such as benthos or neritic fish, in the marine environment. Uncertainties exist for the pelagic realm because of its higher variability, plus little is known about the meso- and bathypelagic zones. A changing environment and modification of habitats will probably drive new communities from plankton to fish or top predators. We need baseline studies, such as those of the Census of Antarctic Marine Life, and databases like SCAR-MarBIN as tools for integrating all of these observations. Our objective is to understand the biodiversity patterns in the Southern Ocean and how these might change through time. |
|
| |
Programme |
1124;1142 |
|
| |
Campaign |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1873-9652 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
yes |
|
| |
Call Number |
|
Serial |
123 |
|
| Permanent link to this record |
