Introducing Lantmäteriet’s gravity data in ArcGIS with implementation of customized GIS functions
Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
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.
, Självständigt arbete, 56
GIS, geodesy, lantmäteriet, gravity, model builder, modelbuilder, python
Other Earth and Related Environmental Sciences
IdentifiersURN: urn:nbn:se:uu:diva-203137OAI: oai:DiVA.org:uu-203137DiVA: diva2:635229
Subject / course
Geophysical Science (HGO)
Bachelor Programme in Earth Science
2013-06-04, Hambergssalen, Institutionen för geovetenskaper, Uppsala universitet, Villavägen 16, Uppsala, 14:00 (Swedish)
UppsokLife Earth Science
Rickard, Pettersson, PhD
Hellqvist, Magnus, PhD