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Quasigeoid-to-geoid determination by EGM08
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
2012 (English)In: Earth Science Informatics, ISSN 1865-0473, Vol. 5, no 2, 87-91 p.Article in journal (Refereed) Published
Abstract [en]

We present a method to estimate the difference between quasigeoid and geoid heights globally from the Earth Gravitational Model EGM08 and a related topographic model. The numerical computations with the standard topographic density of 2.67 g/cm(3) show that the maximum and minimum of the separations are estimated to 5.47 m and -0.11 m on the Tibet plateau and in the Indian Ocean, respectively. These estimates do not consider possible topographic density variations, which result in topographic bias changes proportional to the topographic elevation squared. Assuming such density changes of 10% from the standard value, the separation may change up to 5 dm.

Place, publisher, year, edition, pages
2012. Vol. 5, no 2, 87-91 p.
Keyword [en]
Geoid, Quasi-geoid, EGM08
National Category
Geology
Identifiers
URN: urn:nbn:se:kth:diva-99081DOI: 10.1007/s12145-012-0098-7ISI: 000305461100002Scopus ID: 2-s2.0-84862615265OAI: oai:DiVA.org:kth-99081DiVA: diva2:541540
Note
QC 20120719Available from: 2012-07-19 Created: 2012-07-13 Last updated: 2012-07-19Bibliographically approved

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