Essays about: "geographical information systems"

Showing result 1 - 5 of 140 essays containing the words geographical information systems.

  1. 1. Aspects of Error Quantification and Evaluation in Digital Elevation Models for Glacier Surfaces

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Jip Jan van Zoonen; [2020]
    Keywords : Geography; Geographical Information Systems; GIS; Physical Geography; Digital Elevation Model; DEM; Glaciology; Earth and Environmental Sciences;

    Abstract : Aspects of Error Quantification and Evaluation in Digital Elevation Models for Glacier Surfaces This study explores methods to quantify and evaluate error in digital elevation models (DEMs) built from remotely sensed elevation data of the Hintereisferner glacier. A special focus lies on glacier surfaces because glaciers are often inaccessible for field observations but at the same time prone to measurement errors. READ MORE

  2. 2. Evaluation of water stress mapping methods in vineyards using airborne thermal imaging

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Alon Zuta; [2020]
    Keywords : Geography; Geographical information systems; GIS; Remote sensing; Cover crop; Thermal imaging; Spatial variability; vineyards; interpolation; water stress index; CWSI; Ig; stem water potential; UAV; Rheingau; Interpolation.; Agriculture and Food Sciences; Biology and Life Sciences; Technology and Engineering; Earth and Environmental Sciences;

    Abstract : With low cost and high efficiency, use of airborne infrared thermography imaging from an unmanned aerial vehicle (UAV) has become a widely used technique to measure plant water stress. With that, the use of UAV mounted thermal camera as a precision agriculture technique to map crop water stress is not trivial and its success is depended on variety of factors which are still needed to be studied and understood. READ MORE

  3. 3. Saltwater Intrusion in Fractured Crystalline Bedrock Aquifer. - A Case Study on Koster Islands, SW Sweden

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Sibhat Afewerki; [2019-10-30]
    Keywords : saltwater intrusion; fractured bedrock aquifers; DRASTIC; vulnerability mapping; Koster Islands; slatvattenintrång; Akvifer i uppsprucken berggrund; sårbarhetskartläggning; Kosteröarna;

    Abstract : Saltwater intrusion (SWI) is one of the significant threats in many coastal areas, mainly drivenby anthropogenic hazards (over-pumping) and climate change (sea level rise). So far, there havebeen extensive research and techniques to understand and minimize SWI. READ MORE

  4. 4. A Spatial Analysis of Homicide Crime’s Distribution and Association with Deprivation in Stockholm Between 2010-2017

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Dennis Lindell Schettini; [2019]
    Keywords : GIS; homicide; deprivation; hot spot; generalized regression; Earth and Environmental Sciences;

    Abstract : A Spatial Analysis of Homicide Crime’s Distribution and Association with Deprivation in Stockholm Between 2010-2017 Homicide crimes are rare events depending on numerous factors and tend to be distributed differently based on geographic location. The use of spatial analysis is substantively important for detecting different predictors in varying geographic areas and for the diffusion process of homicide crimes. READ MORE

  5. 5. Multi-Criteria GIS modelling for optimal alignment of roadway by-passes in the Tlokweng Planning Area, Botswana

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Milan Sekulic; [2019]
    Keywords : GIS; Multi-criteria analysis; DEFINITE; Sensitivity Analysis; Python; AHP; Least-cost path; Dijkstra’s algorithm; ArcPy; Geography; model; road alignment; Earth and Environmental Sciences;

    Abstract : To find the optimal by-pass road alignment in the Tlokweng Planning Area in Botswana, a multi-criteria spatial-based model is developed using the GIS-MCE approach. In respect to the environmental impact assessment (EIA) approach, in this research a set of criteria is classified under 3 themes – economic, environmental and social. READ MORE