Tectonic deformations in Greece and the operation of HEPOS network

dc.contributor.author	Γιαννίου, Μιχαήλ	el
dc.date.accessioned	2015-01-30T10:39:03Z
dc.date.available	2015-01-30T10:39:03Z
dc.date.issued	2015-01-30
dc.identifier.uri	http://hdl.handle.net/11400/5124
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Global Positioning System
dc.subject	Mac (Online service)
dc.subject	Παγκόσμιο σύστημα εντοπισμού θέσης
dc.title	Tectonic deformations in Greece and the operation of HEPOS network	en
heal.type	conferenceItem
heal.classification	Topography
heal.classification	Geodesy
heal.classification	Τοπογραφία
heal.classification	Γεωδαισία
heal.classificationURI	http://skos.um.es/unescothes/C04078
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85053969
heal.classificationURI	N/A-Τοπογραφία
heal.classificationURI	N/A-Γεωδαισία
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85053969
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh86003934
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh2006007421
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας, Σχολή Τεχνολογικών Εφαρμογών, Τμήμα Μηχανικών Πληροφορικής και Μηχανικών Τοπογραφίας & Γεωπληροφορικής	el
heal.publicationDate	2010-06-02
heal.bibliographicCitation	Gianniou, M. (2010). Tectonic deformations in Greece and the operation of HEPOS network. EUREF 2010 Symposium, 2-4/06/2010, Gävle, Sweden. Available from: http:http://users.teiath.gr/mgianniou/index_files/Gianniou_2010_EUREF.pdf	en
heal.abstract	Today, networks of permanent reference stations are broadly used for the realization of national Geodetic Reference Systems. Furthermore, single-base GNSS positioning is progressively being replaced by network-based techniques like VRS, FKP and MAC. These techniques model the error sources in order to eliminate the distance-dependent errors in relative GNSS geodetic positioning. The effective modelling of the error sources requires highly accurate coordinates of the reference stations. Site displacements can affect the estimation of error models, degrading the performance of the network. Besides monumentation instabilities and other issues, site displacements can also be caused by tectonic activity. Unlike the majority of European countries, Greece is characterized by strong tectonic activity. Moreover, the Greek area extends over different tectonic plates having individual velocities. This results in a complex velocity field. The situation has to be taken into account in the operation of the Hellenic Positioning System (HEPOS), an RTK network consisting of 98 permanent GPS reference stations distributed throughout Greece. HEPOS is operational since the end of 2007. Observations collected at the HEPOS stations for more than two years have been processed in order to estimate the velocity characteristics of each station. This paper describes the processing strategy and presents the results, which reveal an inhomogeneous deformation field. The impact of station displacements on the network operation is discussed.	en
heal.fullTextAvailability	true
heal.conferenceName	HEPOS network, EUREF 2010 Symposium	en
heal.conferenceItemType	free paper