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Introducing Lantmäteriet’s gravity data in ArcGIS with implementation of customized GIS functions
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2013 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Gravity is measured and used by Lantmäteriet to calculate a model of the geoid to get accurate reference heights for positioning. Lantmäteriet are continuously measuring new gravity and height data across Sweden to both complement, replace and to add new data points. This is mainly done by measurements in the field at benchmark points. One of the major reasons for continued measurements on e.g. benchmark points is that the measuring always moves forward which makes the measurements more accurate. More accurate data leads to a more accurate calculation of the geoid due to the more accurate gravity values. A more accurate geoid gives the possibility of more precise positioning across Sweden, due to the more precise height values.

Lantmäteriet is in the process of updating their entire database of gravity data. They are also measuring at locations where there are none or sparse with measurements. As a stage in the renewing of their database and other systems the Geodesy department wishes to get an introduction to the ArcGIS environment. By customizations of several ArcGIS functions, Lantmäteriet’s work with the extensive data will get easier and perhaps faster. Customized tools will help make e. g. adding and removing data points easier, as well as making cross validation and several other functions only a click of a button away.

Place, publisher, year, edition, pages
2013. , 13 p.
Series
Självständigt arbete, 56
Keyword [en]
GIS, geodesy, lantmäteriet, gravity, model builder, modelbuilder, python
National Category
Other Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-203137OAI: oai:DiVA.org:uu-203137DiVA: diva2:635229
Subject / course
Geophysical Science (HGO)
Educational program
Bachelor Programme in Earth Science
Presentation
2013-06-04, Hambergssalen, Institutionen för geovetenskaper, Uppsala universitet, Villavägen 16, Uppsala, 14:00 (Swedish)
Uppsok
Life Earth Science
Supervisors
Examiners
Available from: 2013-07-03 Created: 2013-07-03 Last updated: 2013-07-03Bibliographically approved

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Introducing Lantmäteriet’s gravity data in ArcGIS with implementation of customized GIS functions(942 kB)392 downloads
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Type fulltextMimetype application/pdf

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  • apa
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