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dc.contributor.author
Sánchez, L.
dc.contributor.author
Drewes, H.
dc.contributor.author
Brunini, Claudio Antonio
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Mackern, M. V.
dc.contributor.author
Martínez Díaz, W.
dc.date.available
2017-06-05T17:31:00Z
dc.date.issued
2016-05
dc.identifier.citation
Sánchez, L.; Drewes, H.; Brunini, Claudio Antonio; Mackern, M. V.; Martínez Díaz, W.; SIRGAS core network stability; Springer Verlag; International Association of Geodesy Symposia; 5-2016; 183-190
dc.identifier.issn
0939-9585
dc.identifier.uri
http://hdl.handle.net/11336/17491
dc.description.abstract
The main objective of SIRGAS (Sistema de Referencia Geocéntrico para las Américas) is to provide an accurate spatial and time-referenced infrastructure as a basis for Earth System research and to support scientific and practical applications based on high-precise positioning. Following this purpose, significant achievements related to the extension, analysis, and maintenance of this reference frame have been reached during the last years. However, there are still unresolved problems hindering the attainment of the best possible precision. In particular, the assimilation of seismic-related deformations and non-lineal station movements is very difficult and its omission considerably reduces the reliability of SIRGAS as a high precision reference frame. To advance in the solution of these inconveniences, this paper presents the first kinematic model of the SIRGAS reference frame computed after the strong earthquake occurred in the Chilean region of Maule in February 2010. This model is based on the combination of weekly free normal equations covering the time span from April 18, 2010 to June 15, 2013. Computed station positions and velocities refer to the IGb08 reference frame (the IGS realisation of the ITRF2008), epoch 2012.0. The averaged rms precision is˙± 1.4 mm horizontally and˙± 2.5 mm vertically for the station positions at the reference epoch, and ± 0.8 mm/year horizontally and ˙± 1.2 mm/year vertically for the constant velocities. Comparisons with reference frames based onmeasurements before the earthquake (like ITRF2008 or former SIRGAS solutions) make evident the strong deformation caused by this earthquake and the necessity of updating accordingly the reference frames in the affected region.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Verlag
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Itrf Densifications
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Regional Reference Frames
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Seismic Effects on Reference Frames
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Sirgas
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Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
SIRGAS core network stability
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-05T14:49:04Z
dc.journal.pagination
183-190
dc.journal.pais
Alemania
dc.journal.ciudad
berlin
dc.description.fil
Fil: Sánchez, L.. Deutsches Geodätisches Forschungsinstitut (DGFI); Alemania
dc.description.fil
Fil: Drewes, H.. Deutsches Geodätisches Forschungsinstitut (DGFI); Alemania
dc.description.fil
Fil: Brunini, Claudio Antonio. Universidad Nacional de la Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Mackern, M. V.. Universidad Nacional de Cuyo; Argentina
dc.description.fil
Fil: Martínez Díaz, W.. Inst. Geografico Agustin Codazzi;
dc.journal.title
International Association of Geodesy Symposia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/1345_2015_143
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