Berlin, Humboldt-Universiẗat, Diss., 2004.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

This thesis presents the results of a 'total reconstitution' of the parish of Colyton in Devon. The demographic patterns found in Colyton have been extensively studied by the Cambridge Group for the History of Population and Social Structure. However, many of the details of the parish's social and economic history had not been well researched. As well as providing the outlines of the economic and social structure, the original Colyton reconstitution was enhanced by extending the database using a diverse collection of records. This provided a check on the coverage of the parish registers, and highlighted the problem of missing marriages in the 1650 to 1750 period. The main benefit of using this method, however, was that demographic patterns could be analysed in a class-specific manner. Demographic change in Colyton proved to be both class- and gender-specific. It was evident that males and females behaved according to different socio-economic imperatives and that, consequently, it was appropriate to view their demographic actions as 'gender-specific'. The result of gender-differentiated economic activity and migration was unbalanced sex ratios. This led to the conclusion that the balance of the population should be given a central position in historical demographic studies since distorted sex ratios are an effective population growth inhibitor.

Inaug.-diss.--Uppsala. / Bibliography: p. [v]-xiii.

No description available.

No description available.

Inaug.-Diss.--Halle-Wittenberg. / Lebenslauf. "Literaturverzeichnis": p. 114-117.

Glacier facies represent distinct regions of a glacier surface characterized by near surface structure and density that develop as a function of spatial variations in surface melt and accumulation. In post freeze-up (autumn) synthetic aperture radar (SAR) satellite imagery, the glacier ice zone and dry snow zone have a relatively low backscatter due to the greater penetration of the radar signal into the surface. Conversely, the saturation and percolation zones are identifiable based on their high backscatter due to the presence of ice lenses and pipes acting as efficient scatterers. In this study, EnviSat ASAR imagery is used to monitor the progression of facies zones across Devon Ice Cap (DIC) from 2004 to 2011. This data is validated against in situ surface temperatures, mass balance data, and ground penetrating radar surveys from the northwest sector of DIC. Based on calibrated (sigma nought) EnviSat ASAR backscatter values, imagery from autumn 2004 to 2011 shows the disappearance of the ‘pseudo’ dry snow zone at high elevations, the migration of the glacier and superimposed ice zones to higher elevations, and reduction in area of the saturation/percolation zone. In 2011, the glacier and superimposed ice zone were at their largest extent, occupying 92% of the ice cap, leaving the saturation/percolation zone at 8% of the total area. This is indicative of anomalously high summer melt and strongly negative mass balance conditions on DIC, which results in the infilling of pore space in the exposed firn and consequent densification of the ice cap at higher elevations.

Glacier facies represent distinct regions of a glacier surface characterized by near surface structure and density that develop as a function of spatial variations in surface melt and accumulation. In post freeze-up (autumn) synthetic aperture radar (SAR) satellite imagery, the glacier ice zone and dry snow zone have a relatively low backscatter due to the greater penetration of the radar signal into the surface. Conversely, the saturation and percolation zones are identifiable based on their high backscatter due to the presence of ice lenses and pipes acting as efficient scatterers. In this study, EnviSat ASAR imagery is used to monitor the progression of facies zones across Devon Ice Cap (DIC) from 2004 to 2011. This data is validated against in situ surface temperatures, mass balance data, and ground penetrating radar surveys from the northwest sector of DIC. Based on calibrated (sigma nought) EnviSat ASAR backscatter values, imagery from autumn 2004 to 2011 shows the disappearance of the ‘pseudo’ dry snow zone at high elevations, the migration of the glacier and superimposed ice zones to higher elevations, and reduction in area of the saturation/percolation zone. In 2011, the glacier and superimposed ice zone were at their largest extent, occupying 92% of the ice cap, leaving the saturation/percolation zone at 8% of the total area. This is indicative of anomalously high summer melt and strongly negative mass balance conditions on DIC, which results in the infilling of pore space in the exposed firn and consequent densification of the ice cap at higher elevations.

No description available.