Atmospheric boundary conditions of recent Saharan dust influx into Central Europe
During the period October 1987 to October 1988 the exceptionally high frequency of eight cases of Saharan dust fallout was observed in FR Germany. A typical seasonal pattern of a meridional dust plume influx is confirmed. In this context, Saharan
New insights into the vegetation history of this region are provided by calculations of pollen influx and by the use of linear discriminant analysis to separate Picea glauca and P. mariana pollen. Three major pollen zones are identified: (1) a basal
herb zone, characterized by high percentages of Cyperaceae, Gramineae, Salix, and Artemisia, and low total pollen influx| (2) a shrub Betula zone with increased total pollen influx and very high percentages of Betula pollen, predominantly in the size
In South Africa migrant labours is indelibly associated with apartheid and influx control. But even since the abolition of influx control, labour migration has continued on a considerable scale. The purpose of this paper is to identify some
The decentralised industrial growth point of Newcastle, Natal, experienced a major influx of population during the 1970s. The patterns of mobility are examined for the various ethnic groups. - (AJC)
L'article expose quelques tendances d'évolution de la télédétection destinées à influer en particulier sur les problèmes de l'automatisation de l'établissement de cartes. (HL).
Les intérêts de la technostructure et ceux des propriétaires d'une entreprise divergent et cela influe sur le choix d'un site d'implantation. Modèle théorique.
L'attention est attirée susceptibles de bouleverser l'équilibre naturel et d'influer à long terme sur les conditions écologiques. Ainsi le problème a-t-il commencé de se poser pour le barrage d'Assouan en Egypte, 20 ans après sa construction. Celle
-ci a influé sur les conditions géomorphologiques, hydrologiques, pédologiques et l'évolution de celles-ci à long terme est inquiétante, sans que l'intérêt purement économique soit évident, car réparer les dégâts coûte plus cher que ce que rapporte le
Sonorans have always been the dominant Mexican migrants to Arizona. Historically these people crossed the border to work in agriculture and mining; today the Sonoran influx is directed to service jobs in cities. From 1910-1920, Tucson was a haven
The evidence from one free-standing squatter settlement on the Witwatersrand suggests that squatting in the south of Johannesburg is not primarily a result of rural immigrants since the abolition of urban influx control laws in 1986, but the result
From 1951 to 1971. Extension of Bhakra Canal irrigation and consequent intensification of agriculture| considerable influx of innovative Punjabi agriculturists to the hitherto sparsely populated parts of the district. - (PLK)
A model for calculating the annual NO3-N influxes along the Belgian part of the river Meuse is presented. The model traced specific inputs and losses and showed the dependence between the river and its watershed. A nitrate budget for the studied
Les sédiments ont été étudiés par analyses pollinique et diatomique et par celle de la faune de mollusques. L'A. présente l'histoire de la végétation et de l'influence humaine du Néolithique tardif jusqu'à nos jours, ainsi que l'influx pollinique et