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An alternative approach to Eulerian pole determination and unification of velocity fields of tectonic motions
Department of Geodesy, K.N. Toosi University of Technology, Tehran, Iran.
University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.
2014 (English)In: Tectonophysics, ISSN 0040-1951, E-ISSN 1879-3266, Vol. 617, 79-87 p.Article in journal (Refereed) Published
Abstract [en]

One of the methods of unifying the global positioning system (GPS) velocity fields (VFs) of tectonic motions is based on the Eulerian vector (EV) estimation. In this method the difference between each available local VF and a reference VF (REF) is derived and an EV is estimated for the differences in a least-squares sense. After that each local VF is unified with respect to REF using the EV. The classical approach to the EV determination is nonlinear and requires the approximate EV. To solve this problem a simple linear approach is developed in this paper for estimating the EV and applied for unifying the existing local VFs in Iran. Our approach is free of the approximate parameters of the EV, faster and more efficient than the classical one. Here, both of the classical and the new approaches are numerically applied and compared to each other; and used to unify the VFs covering a large part of Iran. The unified velocity field shows an overall northward motion with respect to Eurasia with a convergence pattern around the southern Caspian Basin and a little divergence in the central and southern areas.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 617, 79-87 p.
Keyword [en]
GPS velocity filed, Unification methods, Euler pole, Nonlinear model, Gauss–Helmert model; Unique solution for Euler pole
National Category
Earth and Related Environmental Sciences
Research subject
ENGINEERING
Identifiers
URN: urn:nbn:se:hv:diva-6075DOI: 10.1016/j.tecto.2014.01.018ISI: 000334484500006Scopus ID: 2-s2.0-84894237582OAI: oai:DiVA.org:hv-6075DiVA: diva2:706561
Available from: 2014-03-20 Created: 2014-03-20 Last updated: 2016-11-21Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
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More languages
Output format
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  • asciidoc
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