Home [41–50] << 51 52 53 54 55 56 57 58 59 60 >> [61–70]
List View
 | 
Citations
 | 
Details
   web
Records
Author OZOUF-COSTAZ C.
Title Recherches extrêmes sur une vie extrême : les notions de biodiversité et d’adaptaton aux milieux. Type Conference - National - Communication
Year 2009 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Forum des Sciences franco-allemand. Cit des Sciences et de l’Industrie, 19-21 mars 2009.
Programme 1124
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 848
Permanent link to this record
 
 
Author Houssais, M.-N.
Title Albion : une étude de la formation des eaux de fond océaniques à partir de mesures de terrain réalisées à bord de l’ASTROLABE. Séminaire des VCATs et des contractuels TA, IPEV, Brest, 16-18 September, 2008. Type Conference - National - Communication
Year 2008 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract
Programme 452
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 900
Permanent link to this record
 
 
Author Fourati H, Manamanni N, Afilal L, Handrich Y,
Title A rigid body attitude estimation for Bio-logging application: A quaternion-based nonlinear filter approach Type Conference - International - Article with Reading Comitee
Year 2009 Publication 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems Abbreviated Journal
Volume Issue Pages 558 -563
Keywords
Abstract Bio-logging is a new interdisciplinary research area at the intersection of animal behavior and bioengineering. It involves several applications such as determination of specific parameters (attitude, acceleration, and position) via a new generation of mechatronic systems. The aim of this paper concerns the animal motion estimation problem using low-cost sensors fusion. A quaternion-based nonlinear observer for the tracking of rigid body attitude (orientation) and heading using measurements provided from low cost inertial and magnetic sensors is presented. The algorithm combines low-frequency, 3-axis accelerometer and 3-axis magnetometer, data with high frequency 3-axis gyroscope measurement. Then, to increase the performance and reduce the computational requirements, we exploit the sensor readings directly in the designed observer. Using the estimated attitude, the linear acceleration is then derived. This latter will be used in the future to evaluate the animal energy index and its mechanical work. Finally, some experimental results, using the measurements provided by an inertial sensor put on dog are given to illustrate the efficiency of the proposed algorithm.
Programme 394
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher IEEE Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition (down)
ISSN ISBN 978-1-4244-3803-7 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 944
Permanent link to this record
 
 
Author V. Korepanov, A. Marusenkov, A. Chambodut, J.-J. Schott
Title Observatory magnetometer in-situ calibration Type Conference - International - Communication
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract XIVth IAGA WORKSHOP ON GEOMAGNETIC OBSERVATORY INSTRUMENTS, DATA ACQUISITION AND PROCESSING; September 13 – 23, 2010; Changchun, Jilin Province, China.
The magnetic observatories are continuously striving to improve the accuracy of the field measurements. A renewed interest came up recently for instruments using a scalar sensor placed into the center of a coil system (see references below). They are able to reach very high accuracy , but at the expense of relatively high own noise background. So far, the majority of the observatories are still equipped by flux-gate or even photoelectric variometers. The baseline of these types of variometers are estimated using well-known absolute measurements, whereas the scale factors and orientation of the sensor reference frame, which are implicitly involved into the computation of the absolutes values of the field, usually are poorly known and almost everywhere not calibrated periodically, as should be required. The absence of the periodical calibration can be partly explained by fact that the metrological certification of the instruments should be provided in special laboratory by means of calibrations coils what requires to interrupt the measurements, transport the instrument to and from the calibration site and reinstall it again in the observatory. This way of doing is absolutely unacceptable, especially for remote observatories, because the time taken by the whole procedure can be very long, resulting in large gaps in the records. There is also a calibration method based upon magnetometer rotation in the approximately constant Earth’s magnetic field. However, whereas this method gives acceptable precision for, e.g., satellite magnetometers, it is not applicable to observatory magnetometers, due to the actual limited range of field variation, the large relative errors and the possibly unequal scale factors. In addition, the issue of the in-situ orientation of the triaxial magnetometer remains unsolved if we are seeking high accuracy.
In this report we continue to discuss the possibility to calibrate in-situ the observatory instrument based upon the comparison of its records with the field recorded simultaneously by a reference magnetometer. The certified reference instrument has to be installed close to the tested one, its sensitivity axes properly oriented with respect to the geomagnetic frame and the records as synchronous as possible.
The improved version of the observatory magnetometer LEMI-025 was specially designed as a reference instrument. In order to check practical aspects of the proposed in-situ calibration procedure two such magnetometers calibrated using a reference coil facility have been installed in the Strasbourg University geophysical station for intercalibration. The results obtained by processing synchronous records as well as the reliability of these results and estimations of the errors involved into the in-situ calibration procedure are discussed.
Programme 139;905
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 982
Permanent link to this record
 
 
Author Gallet J-C, Domine F, Arnaud L, Picard G, Savarino J,
Title Vertical profile of the specific surface area and density of the snow at Dome C and on a transect to Dumont D'Urville, Antarctica – albedo calculations and comparison to remote sensing products Type Book Chapter
Year 2011 Publication The Cryosphere Abbreviated Journal
Volume 5 Issue 3 Pages 631 -649
Keywords
Abstract The specific surface area (SSA) of snow determines in part the albedo of snow surfaces and the capacity of the snow to adsorb chemical species and catalyze reactions. Despite these crucial roles, almost no value of snow SSA are available for the largest permanent snow expanse on Earth, the Antarctic. We report the first extensive study of vertical profiles of snow SSA near Dome C (DC: 75°06' S, 123°20' E, 3233 m a.s.l.) on the Antarctic plateau, and at seven sites during the logistical traverse between Dome C and the French coastal base Dumont D'Urville (DDU: 66°40' S, 140°01' E) during the Austral summer 2008–2009. We used the DUFISSS system, which measures the IR reflectance of snow at 1310 nm with an integrating sphere. At DC, the mean SSA of the snow in the top 1 cm is 38 m2 kg−1, decreasing monotonically to 14 m2 kg−1 at a depth of 50 cm. Along the traverse, the snow SSA profile is similar to that at DC in the first 600 km from DC. Closer to DDU, the SSA of the top 5 cm is 23 m2 kg−1, decreasing to 19 m2 kg−1 at 50 cm depth. This difference is attributed to wind, which causes a rapid decrease of surface snow SSA, but forms hard windpacks whose SSA decrease more slowly with time. Since light-absorbing impurities are not concentrated enough to affect albedo, the vertical profiles of SSA and density were used to calculate the spectral albedo of the snow for several realistic illumination conditions, using the DISORT radiative transfer model. A preliminary comparison with MODIS data is presented and our calculations and MODIS data show similar trends.
Programme 1011
Campaign
Address
Corporate Author Thesis Bachelor's thesis
Publisher Copernicus Publications Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition (down)
ISSN 1994-0424 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 663
Permanent link to this record
 
 
Author Morin, S. Preunkert and B. Jourdain
Title Aerosols (Sea Salt and Biogenic Sulfur) and Ozone in the Boundary Layer at the Coastal (Dumont d’Urville, DDU) and Inland (Concordia) Sites in East Antarctica Type Conference - International - Communication
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract SCAR 2010 Open Science Conference, 3-6 Août 2010, Buenos Aires, Argentine (conférence invitée)
Programme 414;903
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 1052
Permanent link to this record
 
 
Author D. Di Mauro, L. Cafarella, A. Chambodut, S. Lepidi
Title EARTH'S MAGNETISM AT THE SOUTH POLE: A VIEW FROM INLAND AND COASTAL STATIONS AND TEMPORARY INSTALLATIONS Type Conference - International - Communication
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Contributions to the knowledge of the Earth’s magnetism from polar regions is extremely important to understand the planetary phenomena which occur both below and above the Earth’s surface. At those areas the Earth’s magnetic field is stronger and the spatial and temporal changes are enhanced. At the same time polar regions are areas scarcely covered by observations for the adverse environmental conditions. We report the experience gained in years of management and maintenance of permanent stations (Mario Zucchelli, Dumont d’Urville (Victoria Land) and Concordia stations, Dome C) as well as temporary installations (Talos Dome) in Antarctica, showing how different acquisition systems, analysis and interpretation of data allow the scientific communities to contribute to originating important theories, models and results.
Programme 905
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 1166
Permanent link to this record
 
 
Author DETTAI A., LAUTREDOU A.C. ,BONILLO C., HAUTECOEUR M., GOIMBAULT E. , TERCERIE S. , CRUAUD C., COULOUX A., DUHAMEL G., REY O. , CAUSSE R., PRUVOST P., BUSSON F., KOUBBI P., MOTEKI M. , IGLESIAS S., LECOINTRE G.& C. OZOUF-COSTAZ
Title The CEAMARC Survey: Barcodes as a multi level tool for new findings. Type Conference - International - Communication
Year 2009 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Third International Barcode of Life Conference, 7-13 nov. 2009, Mexico City, Mexico
Programme 1124
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 1309
Permanent link to this record
 
 
Author Joliet F., Coutanceau A.
Title “Une imagerie des paysages pour l'aménagement du parc Tursujuq (Nunavik) ?” Conférence internationale Mondes Polaires, 26-28 février, Paris Type Conference - International - Article with Reading Comitee
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Le projet de Parc National Tursujuq (ou Guillaume Delisle-Lac-à-L’Eau Claire) est en cours et annonce donc une mutation territoriale. Au-delà des études réglementaires préalables menées conjointement par le gouvernement Québécois et les institutions Inuites pour développer un réseau de parc naturels depuis 2002, cette recherche porte sur comment l’analyse des perceptions des paysages du parc Tursujuq permettrait d’en compléter, d’en ajuster la conception. Cette analyse des perceptions est focalisée sur les représentations iconographiques paysagères et les pratiques qui lui sont associées.
En effet, il s’agit ici de rassembler et d’analyser les images « paysage » existantes (archives, sites Web) produites à proximité ou dans le périmètre du parc par les occidentaux d’une part, et de créer un corpus iconographique paysage pour les Inuits d’autre part, de tradition orale.
La volonté de choisir un vecteur de représentations paysagères commun pour cette étude a en effet initié la création d’une imagerie paysagère inuite par le biais d’un concours photographique « paysage » et d’un atelier « paysage » de dessins d’enfants. Les choix de cadrage et de composition de l’ensemble des clichés et dessins montreront quelles préférences paysagères sélectionnent certains lieux plus que d’autres, et sélectionnent la présence d’éléments « de composition » plus que d’autres dans les scènes. Corrélativement, quelles pratiques dans le paysage sont convoquées par ces représentations ?
Les résultats attendus sont la traduction possible de ces expressions paysagères comme outil de décision dans le périmètre, le zonage, les circuits du futur Parc National Tursujuq.
Programme 1043
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 1458
Permanent link to this record
 
 
Author A. Chambodut and J.-J. Schott
Title Current status of permanent magnetic observatories in French Austral and Antartic Territories Type Conference - International - Article with Reading Comitee
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract The 5 permanent magnetic observatories of French Austral and Antarctic territories (Amsterdam, Concordia, Crozet, Dumont d'Urville and Kerguelen) are integrated as active participants in the worldwide network of magnetic observatories (INTERMAGNET), which monitor variations of the Earth's magnetic field at all time scales.Proceedings of i-DUST (INTER DISCIPLINARY UNDERGROUND SCIENCE AND TECHNOLOGY CONFERENCE), June 9-11 2010, Apt, France.
Programme 139;905
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 (down)
ISSN ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 1465
Permanent link to this record