Search results for "Gironde"
showing 3 items of 3 documents
CARTOGRAPHY OF AGROCLIMATIC INDICES AT MESOSCALE LEVEL: METHODOLOGY AND CASE STUDY OF BORDEAUX WINEGROWING AREA. Implications on vine development and…
2007
Climate spatial variability knowledge is essential in agronomy and forestry, in order to characterize production potential or to assess pest development risks. In viticulture, climate mainly governs grapevine development rate and berry ripening. The aim of the present work is to characterise climate spatial variability at mesoscale level, using several spatialization techniques at daily time step, applied to climate variables and agroclimatic indices, in order to evaluate its consequences on grapevine development and grape ripening. This study was led in the Bordeaux winegrowing region. Six variables were studied: minimum and maximum temperatures, solar radiation, reference evapotranspirati…
Dissolved silica in the Garonne River waters : changes in the weathering dynamics
2000
The major ion chemistry of the Garonne River is indicative of seasonal variations in the weathering dynamics of the drainage basin. Using the geochemical model MEGA for calculation of the contribution of atmospheric CO2 to the total bicarbonate fluxes exported by the Garonne River allows estimations of the concentrations of the major dissolved elements that originate from silicate- and carbonate-rock weathering. The molecular ratio SiO2/Al2O3 was calculated for the 1989–1992 period to identify the main type of weathering in the Garonne River, and montmorillonite was shown to be the major mineral occurring in the weathering products. The seasonal variations of the SiO2/Al2O3 ratio also showe…
Les moins de 30 ans en Gironde, regards croisés entre insertion et RSA
2018
Entre études supérieures, exclusion, intérim, chômage et réorientation, l’insertion professionnelle des jeunes est un processus de moins en moins linéaire et prévisible. Les récents débats autour de la « désincitation au travail » ont entraîné la refonte d’une partie du système de protection sociale en conditionnant l’aide publique à l’emploi, et ce de manière encore plus stricte lorsqu’il s’agit de l’octroyer à un(e) jeune de moins de 30 ans. Cette mutation de l’État social s’appuie sur une nouvelle perception de la solidarité dite « active », dont un des dispositifs les plus symboliques est le Revenu de solidarité active (RSA). En s’intéressant à la fois aux jeunes non-insérés et à ceux a…