A new plano-altimetric map of the Dome Concordia (Dome C) area was drawn up from 1995/96 kinematic double-frequency global-positioning-system (GPS) data of two different projects, as well as static GPS data from a geodetic net for deformation analysis and ice-flow velocity measurements covering an area of about 2000 km2.The GPS surveys were carried out for EPICA during the 10th and 11th Italian Expeditions to choose the optimal location for deep ice-core drilling at Dome C. The accuracy of the kinematic survey was tested by analysing the height-value differences at intersections between different profiles; values ranged from 50–150 mm.The new map was compared with the 1993 kinematic interferential GPS data and residuals between the 1993 and 1995 data were calculated. The surface topographic values were used to calculate the elevation of the Dome C area bedrock, obtained from the reference ground-based and airborne radio-echo-sounding surveys.

No abstract

Plant tagging using radiofrequency identification (RFID) microchips is attractive for ornamental shrubs, such as rose (Rosa spp.), due to their high market value, wide distribution, health certification system, and numerous uses. Differently from other woody species for which methods of microchip implantation have been tested, rose tagging requires the possibility of insertion within canes of less than 10 mm diameter, such as those typically found in the rose nursery setting. Moreover, the possibility of tagging after grafting without changing common plant production procedures and aesthetic value are important considerations. Toward this aim, a new method of microchip insertion was developed. To test its effects on roses, two cultivars were subjected to a tagging procedure, and histological observations of tissues around the microchip and growth analysis of plant canes were performed. Microchip implantation did not cause xylem necrosis in 8- to 9-mm-diameter canes, but in lower diameter canes wilt of the lateral shoot and detriments in growth were observed compared with control plants. The tagged roses were tracked by a database developed for rose information, field log, and botanical sheet retrieval. Our findings suggest that rose plants can be safely tagged with a RFID microchip following suitable selection of cane calliper as early as the nursery phase without negative effects on plant appearance.

Résumé Les données archéologiques et historiques montrent que le site d'Aquilée fut l'un des plus importants ports fluviaux de l'Empire romain. Les recherches multidisciplinaires récentes insistent sur l'importance des voies fluviales dans la plaine deltaïque d'Aquilée au cours de l'Antiquité. Les résultats apportés par les paléoenvironnementalistes attestent la présence de paléochenaux fluviatiles de haute énergie, au moins au nord et à l'est du site. Initialement (ix'-vw s. av. J.-C), le tracé des paléochenaux a suivi une direction de composante principalement N-S, avant d'adopter une direction NE-SW. Les facteurs à l'origine de cette évolution hydrographique sont d'ordre naturel et/ou anthropique. L'interaction entre la paléohydrographie du site, la paléohydrologie des cours d'eau et l'aménagement de la ville romaine est clairement démontrée. Les stratégies de développement urbain évoluent en fonction de la dynamique fluviale. En même temps qu'elle s'adapte aux contraintes hydrologiques "naturelles" de la plaine deltaïque, la société romaine contrôle l'extension des environnements hydromorphes ainsi que la géométrie et l'hydraulicité des cours d'eau afin de maintenir de bonnes conditions de navigabilité.

No abstract