Geographical Information Systems – GIS

Mannvit offers integrated services using Geographical Information Systems (GIS). Mannvit uses ArcGIS software from ESRI, which is one of the best GIS software systems on the market today. These systems are used to analyze information in environmental studies, geothermal research and various other kinds of projects. A proper GIS is a very powerful tool for creating, manipulating, managing and presenting diverse data. The data is stored in secure and well organized databases with easy access for the Mannvit specialists. Organized data handling in databases is fundamental because enormous amounts of data are collected in the course of our work.


Geographical Information Systems can be used for various analysis of geographical data.  Mannvit uses ArcGIS extensions for 3D analysis to create 3D models and to visually illustrate and analyze line-of-sight and view shed. Another ArcGIS extension is used for various spatial analyses, such as watershed analysis, spatial interpolation and modeling.

A well organized Geographical Information System is a great tool to simplify complex decision making processes.

One part of Mannvit's geothermal services is geothermal exploration and site location for geothermal wells. In this work, a Geographical Information System (GIS) turns out to be very powerful tool in various kinds of decision making. The ability to compare and overlay geological and geophysical data from various datasets is a great asset for Mannvit's Geologists and Geophysicists.

When choosing well locations for possible geothermal fields, three parameters are most important:

  • Suitable type of bedrock is needed and proven by existing well data
  • Areas with fractured bedrock found by seismic interpretations
  • Possible geothermal areas with high porosity and high permeability at a favorable depth found by AMT/MT and gravity measurements.

Positive areas based on these three parameters are outlined in GIS. Well sites are then located where positive areas from each parameter intersect. There we can expect to find the most suitable reservoirs for geothermal development.

When well sites are located, Mannvit uses ArcGIS extensions and 3D analysis to create a 3D model to illustrate the layered and fractured crust beneath the outlined well site. The main purpose of this modeling is to help with the well design and determining the exact location, route and depth of the well. 


Steinþór Traustason

Geographer, Environment

+354 422 3335

Auður Andrésdóttir

Geologist M.Sc. Environment

+354 422 3139