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Title |
Adsorption isotherms of acetone on ice between 193 and 213 K |
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Year |
2002 |
Publication |
Geophysical research letters |
Abbreviated Journal |
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Volume |
29 |
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Pages |
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Keywords |
1863 Hydrology: Snow and ice; 3947 Mineral Physics: Surfaces and interfaces; 0320 Atmospheric Composition and Structure: Cloud physics and chemistry |
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Programme |
437 |
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American Geophysical Union |
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0094-8276 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5560 |
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Author |
Callot, J.-P.; Geoffroy, L.; Brun, J.-P. |
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Title |
Development of volcanic passive margins: Three-dimensional laboratory models |
Type |
Journal Article |
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Year |
2002 |
Publication |
Tectonics |
Abbreviated Journal |
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Volume |
21 |
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Abstract |
Continental breakup above an anomalously hot mantle may lead to the development of volcanic margins. Volcanic margins are characterized by (1) thick seaward dipping lava flow sequences, (2) central intrusive complexes associated with dyke swarms parallel to the coast, and (3) high seismic velocity bodies in the lower crust attributable to magma underplating. A conceptual model for volcanic margins development has recently been proposed based on onshore studies of the Greenland margins and the British Tertiary Igneous Province. It is proposed that the long-lived central intrusions are genetically linked to underlying persistent zones of mantle fusion. These localized melting domains (or soft spots), equivalent to small mantle diapirs, may locally soften the extending continental lithosphere. The low-viscosity diapirs would (1) localize tectonic strain and (2) feed the volcanic margin with magma. Thus such soft spots can control the along-strike magmatic and tectonic segmentation of volcanic margins. Recent geophysical investigations appear to show that the along-strike structure of volcanic passive margins is compatible with such a segmentation process. Here we present a set of scaled experiments designed to study how such localized rheological heterogeneities in the sub-Moho mantle may have a mechanical effect on continental breakup. Four-layer models were constructed using sand and silicone putties to represent the brittle and ductile layers of both crust and mantle. The soft spots are simulated by low-viscosity silicone putty emplaced within the brittle material. At the scale of the entire breakup zone, the soft spots display an oceanic-type strength profile defining low-strength zones where continental breakup is initiated. The rift orientation and segmentation are strongly controlled by the distribution of the low-viscosity heterogeneities, rather than by the direction of regional extension. The experiments are compared with the geometry and segmentation of the onshore part of the Greenland volcanic margins. |
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290 |
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American Geophysical Union |
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ISSN |
0278-7407 |
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yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5547 |
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Author |
Williams, J.; Gros, V.; Bonsang, B.; Kazan, V. |
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Title |
HO cycle in 1997 and 1998 over the southern Indian Ocean derived from CO, radon, and hydrocarbon measurements made at Amsterdam Island |
Type |
Journal Article |
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Year |
2001 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
106 |
Issue |
d12 |
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Programme |
415 |
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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 |
5600 |
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Author |
Legrand, M.; Preunkert, S.; Wagenbach, D.; Fischer, H. |
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Title |
Seasonally resolved Alpine and Greenland ice core records of anthropogenic HCl emissions over the 20th century |
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 |
Issue |
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Pages |
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Abstract |
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Programme |
414 |
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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 |
5629 |
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Author |
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Title |
Measurement of the specific surface area of 176 snow samples using methane adsorption at 77 K |
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 |
Issue |
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Pages |
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Keywords |
1863 Hydrology: Snow and ice; 3947 Mineral Physics: Surfaces and interfaces; 0399 Atmospheric Composition and Structure: General or miscellaneous; 0320 Atmospheric Composition and Structure: Cloud physics and chemistry |
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Abstract |
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Programme |
437 |
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Campaign |
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Publisher |
American Geophysical Union |
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Series Issue |
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ISSN |
0148-0227 |
ISBN |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5552 |
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Author |
Frezzotti, M.; Gandolfi, S.; Urbini, S. |
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Title |
Snow megadunes in Antarctica: Sedimentary structure and genesis |
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 |
Issue |
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Pages |
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Keywords |
1827 Hydrology: Glaciology; 1863 Hydrology: Snow and ice; 1894 Hydrology: Instruments and techniques; 3322 Meteorology and Atmospheric Dynamics: Land/atmosphere interactions; 5470 Planetology: Solid Surface Planets: Surface materials and properties |
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Abstract |
Megadune fields occupy large areas in the interior of the East Antarctic ice sheet and are the result of unusual snow accumulation and redistribution processes. They therefore are important to surface mass balance and ice core interpretation. Field observations (GPS, GPR, and surface measurements) have provided a detailed description of megadune sedimentation and morphology over a 70 km2 area, located 200 km east of Dome C. A combination of remote sensing analysis (using Landsat and satellite radar altimetry) and field measurements indicate that slope in the prevailing wind direction (SPWD) and climatic conditions play a crucial role in megadune genesis. The megadune areas tend to be characterized by slightly steeper regional slope and the presence of highly persistent katabatic winds. The megadunes represent 2 to 4 m amplitude waves of 2 to 5 km wavelength formed by variable net accumulation, ranging between 25% (leeward faces) to 120% (windward faces) of the accumulation in adjacent nonmegadune areas. Leeward faces are characterized by glazed, sastrugi-free surfaces and extensive depth hoar formation. Windward faces are covered by large rough sastrugi up to 1.5 m in height. |
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Programme |
961 |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
ISBN |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5631 |
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Author |
Duval, P.; Montagnat, M. |
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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 |
Issue |
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Pages |
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Keywords |
1827 Hydrology: Glaciology; 1863 Hydrology: Snow and ice; 3902 Mineral Physics: Creep and deformation; 5120 Physical Properties of Rocks: Plasticity, diffusion, and creep |
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Abstract |
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Programme |
902 |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5637 |
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Author |
Nishitani, N.; Ogawa, T.; Sato, N.; Yamagishi, H.; Pinnock, M.; Villain, J.-P.; Sofko, G.; Troshichev, O. |
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Title |
A study of the dusk convection cell's response to an IMF southward turning |
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 |
Issue |
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Pages |
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Keywords |
2463 Ionosphere: Plasma convection; 2431 Ionosphere: Ionosphere/magnetosphere interactions; 2437 Ionosphere: Ionospheric dynamics; 2784 Magnetospheric Physics: Solar wind/magnetosphere interactions |
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Abstract |
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Programme |
312;911 |
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Thesis |
Bachelor's thesis |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5557 |
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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 |
Issue |
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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 |
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Programme |
312;911 |
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Address |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Publisher |
American Geophysical Union |
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ISSN |
0148-0227 |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5623 |
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Author |
Bouhram, M.; Dubouloz, N.; Malingre, M.; Jasperse, J.R.; Pottelette, R.; Senior, C.; Delcourt, D.; Carlson, C.W.; Roth, I.; Berthomier, M.; Sauvaud, J.-A. |
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Title |
Ion outflow and associated perpendicular heating in the cusp observed by Interball Auroral Probe and Fast Auroral Snapshot |
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 |
Issue |
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Pages |
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Keywords |
2704 Magnetospheric Physics: Auroral phenomena; 2724 Magnetospheric Physics: Magnetopause, cusp, and boundary layers; 7859 Space Plasma Physics: Transport processes; 7867 Space Plasma Physics: Wave/particle interactions |
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Abstract |
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Programme |
312 |
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Corporate Author |
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Thesis |
Bachelor's thesis |
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Publisher |
American Geophysical Union |
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Series Issue |
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Edition |
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ISSN |
0148-0227 |
ISBN |
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Notes |
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Approved |
yes |
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Call Number |
IPEV @ Thierry.Lemaire @ |
Serial |
5609 |
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