| Records |
Author  |
A. Chambodut, J.M.G. Merayo, M. Menvielle and S. Vennerstroem. |
| Title |
A Magnetometer for Mars tested at Concordia Magnetic Observatory, Antarctica |
Type |
Conference - International - Poster |
| Year |
2011 |
Publication |
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Abbreviated Journal |
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| Abstract |
IUGG 2011 Melbourne Australia. |
| Programme |
139 |
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Approved |
yes |
| Call Number |
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Serial |
3586 |
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| Author |
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| Title |
New international service of geomagnetic indices' web site |
Type |
Conference - International - Communication |
| Year |
2015 |
Publication |
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Abbreviated Journal |
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| Abstract |
26th IUGG general assembly 2015 |
| Programme |
139 |
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Approved |
yes |
| Call Number |
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Serial |
6066 |
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| Author |
A. Corbeau, J. Collet, F. Orgeret, P. Pistorius, H. Weimerskirch |
| Title |
Fine-scale interactions between boats and large albatrosses indicate variable susceptibility to bycatch risk according to species and populations |
Type |
Journal |
| Year |
2021 |
Publication |
Animal Conservation |
Abbreviated Journal |
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| Volume |
24 |
Issue |
4 |
Pages |
689-699 |
| Keywords |
albatross populations biologging bycatch assessment bycatch risk ecological trap fisheries fishing boat bycatch seabirds |
| Abstract |
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109 |
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Edition |
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| ISSN |
1469-1795 |
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Approved |
yes |
| Call Number |
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Serial |
8209 |
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| Author |
A. Dommergue, P. Martinerie, J. Courteaud, E. Witrant, D. M. Etheridge |
| Title |
A new reconstruction of atmospheric gaseous elemental mercury trend over the last 60 years from Greenland firn records |
Type |
Journal |
| Year |
2016 |
Publication |
Atmospheric Environment |
Abbreviated Journal |
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| Volume |
136 |
Issue |
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Pages |
156-164 |
| Keywords |
Archive Arctic Atmospheric mercury Firn Greenland Mercury |
| Abstract |
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| Programme |
1025 |
| Campaign |
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Edition |
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| ISSN |
1352-2310 |
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Approved |
yes |
| Call Number |
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Serial |
8171 |
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| Title |
Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO2 and CH4 |
Type |
Journal |
| Year |
2017 |
Publication |
Atmos. Meas. Tech. |
Abbreviated Journal |
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| Volume |
11 |
Issue |
3 |
Pages |
1599-1614 |
| Keywords |
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| Abstract |
This study deals with the problem of identifying atmospheric data influenced by local emissions that can result in spikes in time series of greenhouse gases and long-lived tracer measurements. We considered three spike detection methods known as coefficient of variation (COV), robust extraction of baseline signal (REBS) and standard deviation of the background (SD) to detect and filter positive spikes in continuous greenhouse gas time series from four monitoring stations representative of the European ICOS (Integrated Carbon Observation System) Research Infrastructure network. The results of the different methods are compared to each other and against a manual detection performed by station managers. Four stations were selected as test cases to apply the spike detection methods: a continental rural tower of 100?m height in eastern France (OPE), a high-mountain observatory in the south-west of France (PDM), a regional marine background site in Crete (FKL) and a marine clean-air background site in the Southern Hemisphere on Amsterdam Island (AMS). This selection allows us to address spike detection problems in time series with different variability. Two years of continuous measurements of CO2, CH4 and CO were analysed. All methods were found to be able to detect short-term spikes (lasting from a few seconds to a few minutes) in the time series. Analysis of the results of each method leads us to exclude the COV method due to the requirement to arbitrarily specify an a priori percentage of rejected data in the time series, which may over- or underestimate the actual number of spikes. The two other methods freely determine the number of spikes for a given set of parameters, and the values of these parameters were calibrated to provide the best match with spikes known to reflect local emissions episodes that are well documented by the station managers. More than 96?% of the spikes manually identified by station managers were successfully detected both in the SD and the REBS methods after the best adjustment of parameter values. At PDM, measurements made by two analyzers located 200?m from each other allow us to confirm that the CH4 spikes identified in one of the time series but not in the other correspond to a local source from a sewage treatment facility in one of the observatory buildings. From this experiment, we also found that the REBS method underestimates the number of positive anomalies in the CH4 data caused by local sewage emissions. As a conclusion, we recommend the use of the SD method, which also appears to be the easiest one to implement in automatic data processing, used for the operational filtering of spikes in greenhouse gases time series at global and regional monitoring stations of networks like that of the ICOS atmosphere network. |
| Programme |
416 |
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| ISSN |
1867-8548 |
ISBN |
1867-8548 |
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Approved |
yes |
| Call Number |
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Serial |
6406 |
| Permanent link to this record |
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| Author |
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| Title |
High-quality signal recording down to 0.001 Hz with standard MEMS accelerometers |
Type |
Non peer-reviewed symposium |
| Year |
2018 |
Publication |
SEG Technical Program Expanded Abstracts 2018 |
Abbreviated Journal |
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| Volume |
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Issue |
0 |
Pages |
196-200 |
| Keywords |
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| Abstract |
Recording very low-frequency signal below 1 hertz is a major concern for seismology, in particular passive noise tomography, and is now also considered for some oil and gas applications. The seismic sensors commonly in use for hydrocarbon deposit surveys (geophones and previous generation of MEMS accelerometers) previously had performance limitations in such applications due to their technological design with very low-frequency signal being concealed by instrument noise. Tests on a recent generation of MEMS (Micro Electro-Mechanical System) sensor with an ultra-low noise floor were performed in our lab, and showed outstanding very low-frequency performance in terms of instrument noise and full scale. A teleseism that occurred during our tests was also duly detected. Presentation Date: Tuesday, October 16, 2018 Start Time: 1:50:00 PM Location: Poster Station 10 Presentation Type: Poster |
| Programme |
133 |
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Approved |
yes |
| Call Number |
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Serial |
7384 |
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| Author |
A. Ghelfi, D. Maurin, A. Cheminet, L. Derome, G. Hubert, F. Melot |
| Title |
Neutron monitors and muon detectors for solar modulation studies: 2. ? time series |
Type |
Journal |
| Year |
2017 |
Publication |
Advances in Space Research |
Abbreviated Journal |
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| Volume |
60 |
Issue |
4 |
Pages |
833-847 |
| Keywords |
Cosmic rays Muon detector Neutron monitor Solar modulation |
| Abstract |
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| Programme |
1112 |
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| ISSN |
0273-1177 |
ISBN |
0273-1177 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
6724 |
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| Author |
A. Ghelfi, D. Maurin, A. Cheminet, L. Derome, G. Hubert, F. Melot |
| Title |
Neutron monitors and muon detectors for solar modulation studies: 2. ? time series |
Type |
Journal |
| Year |
2017 |
Publication |
Advances in Space Research |
Abbreviated Journal |
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| Volume |
60 |
Issue |
4 |
Pages |
833-847 |
| Keywords |
Cosmic rays Muon detector Neutron monitor Solar modulation |
| Abstract |
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| Programme |
1112 |
| Campaign |
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Edition |
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| ISSN |
0273-1177 |
ISBN |
0273-1177 |
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Approved |
yes |
| Call Number |
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Serial |
7036 |
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| Author |
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| Title |
Demographic, endocrine and behavioral responses to mirex in the South polar skua |
Type |
Journal |
| Year |
2018 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
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| Volume |
631-632 |
Issue |
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Pages |
317-325 |
| Keywords |
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| Abstract |
Population consequences of chronic exposure to multiple pollutants at low environmental doses remain speculative, because of the lack of appropriate long-term monitoring surveys. This study integrates proximate and ultimate aspects of persistent organic pollutants (POP) burden in free-living vertebrates, by coupling hormonal and behavioral endpoints, life-history traits, and population dynamics. Blood samples (N=70) were collected in South polar skuas during two breeding periods, in 2003 and 2005, and individuals were annually monitored until 2011. Multi-state mark recapture models were used to test the effects of POP levels on demographic traits. Survival rate and long-term breeding probability were not related to individual POP levels, whereas long-term breeding success significantly decreased with increasing blood levels of mirex, an organochlorine insecticide. At the proximate level, corticosterone (stress hormone) and prolactin (parental care hormone) levels were not linked to individual POP burden. Nest defense in 2005 was significantly less intensive in chick-rearing skuas bearing higher mirex levels, suggesting reproductive behavioral impairment. Matrix population models were then built to project the rate of population decline according to increasing mirex burden. Although mirex levels were 2.8 times higher in 2003 than in 2005, the population-level effect of mirex was only detected in 2005, the year of higher corticosterone levels. The combination of endocrine traits with demographic analysis thereby enables to provide new support of synergistic interactions between pollutants and stress levels on long-term breeding outputs and population dynamics. |
| Programme |
109 |
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| ISSN |
0048-9697 |
ISBN |
0048-9697 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7119 |
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| Author |
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| Title |
Contribution of sea ice organic matter in the diet of Antarctic fishes: a diatom-specific highly branched isoprenoid approach |
Type |
Journal |
| Year |
2014 |
Publication |
Polar Biology |
Abbreviated Journal |
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| Volume |
37 |
Issue |
7 |
Pages |
903-910 |
| Keywords |
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| Abstract |
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| Programme |
1010 |
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Edition |
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| ISSN |
1432-2056 |
ISBN |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8145 |
| Permanent link to this record |
