Sökning: "digital terrain modelling"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden digital terrain modelling.
1. Terrain Modelling with GIS for Tectonic Geomorphology : Numerical Methods and Applications
Sammanfattning : Analysis of digital elevation models (DEMs) by means of geomorphometry provides means of recognising fractures and characterising the morphotectonics of an area in a quantitative way. The objective of the thesis is to develop numerical methods and a consistent GIS methodology for tectonic geomorphology and apply it to test sites. LÄS MER
2. Spatially Distributed Hydrological Modelling : Wetness Derived from Digital Elevation Models to Estimate Peatland Carbon
Sammanfattning : To study the hydrology of peatlands and explore wetness distribution is difficultmainly due to the complexity of the surface of peatlands, and also due to the presence of permafrost underlain peatlands in the arctic regions. I have chosen the area called Stordalen mire in the arctic region in northern Sweden for my study. LÄS MER
3. Geo-environmental considerations in transport infrastructure planning
Sammanfattning : Transport infrastructure constitutes one of the key factors to a country’s economic growth. Investment in new transport infrastructure might cause potential environmental impacts, and if a project has several alternative corridors open for suggestion then each alternative corridor will have a different impact on the environment. LÄS MER
4. Airborne Gravity Gradient, Magnetic and VLF datasets : Case studies of modelling, inversion and interpretation
Sammanfattning : Northern Sweden is one of the largest hosts for mineral resources in Europe and always has been an interesting area for researchers from various disciplines of Earth sciences. This dissertation is a comprehensive summary of three case study papers on airborne VLF, gravity gradient and magnetic data in the area. LÄS MER
5. Modelling and Retrieval of Forest Parameters from Synthetic Aperture Radar Data
Sammanfattning : Frequent, high-resolution mapping of national and global forest resourcesis needed for improved climate modelling, degradation and deforestation detection,natural disaster management, as well as commercial forestry. Synthetic aperture radar(SAR) is an active radio- or microwave-frequency imaging sensor, which can be optimisedto fit specific needs through the choice of the centre frequency. LÄS MER