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Anna Maria Kowalczyk, Kamil Kowalczyk
The use of network analysis to creating
a model of Triangulated Irregular Network (TIN) on the basis of
the data from Polish Active Geodetic Network EUPOS (ASG EUPOS) stations
| Conference Information: |
9th International Conference “Environmental Engineering”, 22–23 May 2014, Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
eISSN 2029-7092 online |
| ISBN: |
eISBN 978-609-457-640-9 |
| ISBN: |
ISBN 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
A system of referential stations ASG EUPOS launched
in 2008 in Poland provides, among others, information
regarding the changes of the stations’ vertical and
horizontal coordinates. These changes can be related
to the changes of tectonic plates. One can create
models of the vertical and horizontal movements
of the Earth’s crust. The changes of height of the
referential stations are more difficult to model
than horizontal changes. The evaluation of credibility
of these changes is also more challenging. The velocities
of the vertical changes can be determined in two ways:
as absolute velocities (on referential stations) or as
relative velocities – between the stations. Although
the referential stations are located evenly within the
Polish territory, they do not compose preordained geometric
shapes. Such an arrangement allows for certain freedom of creating
connections of the stations between which the relative vertical
movements are determined. Although one popular method of creating
the TIN is Delaunay triangulation, there are methods relating to
network analyses allowing for connecting the points in another way.
The purpose of this article is to employ various analytical methods
to create the TIN of the relative vertical movements. The chosen methods
of network modelling are characterised and compared. Moreover,
their utility regarding the creation of a model of relative
vertical movements within Poland’s territory is evaluated.
Keywords: network analysis; model; vertical movements; ASG EUPOS.
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