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Author |
Senior, C.; Cerisier, J.-C.; Thorolfsson, A.; Lester, M. |
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Title |
Propagation in the ionosphere of convection changes following a sharp interplanetary magnetic field By transition |
Type |
Journal Article |
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Year |
2002 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
107 |
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Pages |
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Keywords |
2463 Ionosphere: Plasma convection; 2740 Magnetospheric Physics: Magnetospheric configuration and dynamics |
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Abstract |
The nature of the response of the ionospheric convection to changes in the interplanetary magnetic field (IMF), either quasi-simultaneous over the polar cap and auroral region or propagating with the flow velocity from the noon sector, remains to be understood. We examine the changes in the ionospheric plasma convection associated with a negative to positive transition in the dawn-dusk component (By) of the IMF. A special mode of operation of the SuperDARN HF radars has been used, which provided both a large field of view and high-resolution convection data on three beams. Close to noon, the most characteristic response concerns the position in magnetic local time (MLT) of the merging gap, the ionospheric footprint of the magnetopause reconnection line, which moves longitudinally with a velocity of 1 km/s. In addition, modifications of the convection, which are indirectly related to this motion, are observed. We attribute them to the “quasi-instantaneous” effect related to the incompressibility of the plasma. Far from noon, in the morning sector, the convection reacts with an intermediate delay, which is neither instantaneous nor compatible with the above propagation velocity. A timing of the transition, based on the IMP 8 and Geotail satellites, located on the dawn flank of the magnetosphere and at the nose of the magnetopause, respectively, indicates that the ionospheric perturbation originates at the impact site of the By transition close to 1300 MLT, with a maximum delay of 3 min after it hits the nose of the magnetopause. |
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312;911 |
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Bachelor's thesis |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5623 |
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Author |
Petit C. |
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Title |
Au Pays des Inuit : Un Film, un Peuple, une Légende, Atanarjuat . |
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Journal Article |
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Year |
2004 |
Publication |
Etudes/Inuit/Studies |
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Volume |
29 |
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Abstract |
B. Saladin d’Anglure et Igloolik Isuma Productions Etudes/Inuit/Studies |
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Programme |
423 |
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Thesis |
Bachelor's thesis |
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ISSN |
0701-1008 |
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yes |
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Serial |
2657 |
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Author |
Fitoussi C., Duprat J., Tatischeff V., Kiener J., Gounelle M., Raisbeck G., Engrand C., Assunção M., Coc A., Lefebvre A., Porquet M.G., De Serreville N., Thibaud J.P., Yiou F., Bourgeois C., Chabot M., Hammache F., |
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Title |
AMS measurement of 24Mg(3He,p)26Al cross section, implications for the 26Al production in the early Solar System. |
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Journal Article |
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Year |
2004 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
35 |
Issue |
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Pages |
1586 |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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yes |
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2755 |
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Author |
Maurette M., Brack A., Duprat J., Engrand C. & Kurat G. |
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Title |
High input rates of micrometeoritic sulfur, smoke“ particles and oligo-elements on the early Earth.” |
Type |
Journal Article |
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Year |
2004 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
35 |
Issue |
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Pages |
1625 |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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yes |
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Serial |
2756 |
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Author |
Duprat J., Engrand C., Maurette M., Gounelle M., Hammer C. & Kurat G. |
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Title |
The CONCORDIA-collection : pristine contemporary micrometeorites from central Antarctica surface snow. |
Type |
Journal Article |
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Year |
2003 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
34 |
Issue |
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Pages |
1727 |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
2759 |
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Author |
Engrand C., Gounelle M., Zolensky M.E. & Duprat J. |
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Title |
About Tagish Lake as a potential parent body for polar micrometeorites ; clues from their hydrogen isotopic compositions. |
Type |
Journal Article |
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Year |
2003 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
34 |
Issue |
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Pages |
1688 |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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yes |
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Call Number |
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Serial |
2760 |
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Author |
Cuillierier R., Duprat J., Maurette M. & Hammer C. |
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Title |
The crucial role of neon to identify cometary micrometeorites from historical and future Leonids showers trapped in Antarctica and Greenland snows. |
Type |
Journal Article |
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Year |
2002 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
XXXIII |
Issue |
1519 |
Pages |
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Keywords |
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Abstract |
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Programme |
1065 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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Approved |
yes |
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Call Number |
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Serial |
2764 |
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Author |
Duprat J., Hammer C., Maurette M., Engrand C., Matrajt G., Immel G., Gounelle M. & Kurat G. |
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Title |
Search for past and future frozen“ Leonid showers in Antarctica and Greenland.” |
Type |
Journal Article |
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Year |
2001 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
XXXII |
Issue |
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Pages |
#1641 |
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Keywords |
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Abstract |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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Approved |
yes |
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Call Number |
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Serial |
2765 |
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Author |
Duprat J., Engrand C., Gounelle M., Maurette M., Matrajt G., Kurat G. & Brandstätter F. |
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Title |
Search for possible extraterrestrial matter among shiny small iron oxide spherules. |
Type |
Journal Article |
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Year |
2001 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
XXXII |
Issue |
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Pages |
#1773 |
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Keywords |
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Abstract |
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Programme |
1065 |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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yes |
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Call Number |
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Serial |
2766 |
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Author |
Engrand C., Gounelle M., Duprat J. & Zolensky M.E. |
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Title |
In-situ oxygen isotopic composition of individual minerals in Tagish Lake, a new type 2 carbonaceous meteorite. |
Type |
Journal Article |
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Year |
2001 |
Publication |
Lunar and planetary science |
Abbreviated Journal |
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Volume |
XXXII |
Issue |
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Pages |
1568 |
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Keywords |
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Abstract |
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Programme |
1065 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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ISSN |
1540-7845 |
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Approved |
yes |
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Call Number |
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Serial |
2767 |
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