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Symposium SIRGAS2016

Thanks to a kind invitation of the Instituto Geográfico Militar of Ecuador, the Symposium SIRGAS2016 will take place in Quito, from November 16 to 18, 2016. This symposium is sponsored by the International Association of Geodesy (IAG) and the Pan-American Institute for Geography and History (PAIGH). The main objective of SIRGAS2016 is to bring together the geodetic community of the Americas to exchange experiences about present advances and future challenges related to the implementation, maintenance, and appropriate utilization of the existing reference geodetic infrastructure. In this way, everyone from the public, private and academic sectors, or in general, from every institution, whose activities are based on the generation or utilization of geo-referenced data is very welcome and is kindly requested to submit a contribution related to the SIRGAS objectives. The logistical organization of SIRGAS2016 is coordinated by the Instituto Geográfico Militar of Ecuador, who provides detailed information at the website http://www.igm.gob.ec/sirgas/. The thematic and contents of SIRGAS2016 are coordinated by the SIRGAS Executive Committee and Scientific Council [more…]


New velocity model VEMOS2015

A new SIRGAS Velocity Model (VEMOS2015) was inferred from GNSS (GPS+GLONASS) measurements gained after the strong earthquakes occurred in 2010 in Chile and Mexico. It is based exclusively on the multi-year solution SIR15P01, which comprises 456 continuously operating GNSS stations covering a five years period from March 14, 2010 to April 11, 2015. VEMOS2015 covers the region from 55°S, 110°W to 32°N, 35°W with a spatial resolution of 1° x 1°. The average prediction uncertainty is ±0.6 mm/a in the north-south direction and ±1.2 mm/a in the east-west direction. The maximum is ±9 mm/a in the Maule deformation zone (Chile) while the minimum values of about ±0.1 mm/a occur in the stable eastern part of the South American plate. VEMOS2015 is available at https://doi.pangaea.de/10.1594/PANGAEA.863132.

When using VEMOS2015, please always quote the following citation:

Sánchez L., Drewes H. (2016): VEMOS2015: Velocity and deformation model for Latin America and the Caribbean, doi: 10.1594/PANGAEA.863131, supplement to:
Sánchez L. Drewes H. (2016): Crustal deformation and surface kinematics after the 2010 earthquakes in Latin America. Journal of Geodynamics, doi: 10.1016/j.jog.2016.06.005.


New multi-year solution SIR15P01

The IGS RNAAC SIR (IGS Regional Network Associate Analysis Centre for SIRGAS) under the responsibility of DGFI-TUM (Deutsches Geodätisches Forschungsinstitut, Technische Universität München) released recently a new multi-year solution for the SIRGAS reference frame. This solution, called SIR15P01, was computed using GNSS (GPS+GLONASS) observations gained after the strong earthquakes occurred in 2010 in Chile and Mexico. It covers a five years period from 2010-03-14 to 2015-04-11. SIR15P01 includes positions and velocities of 303 SIRGAS reference stations and 153 additional stations, which are considered to improve the station distribution towards a post-seismic surface velocity model. SIR15P01 refers to the IGb08 frame, epoch 2013.0. The averaged RMS precision for the station positions at the reference epoch is ±0.7 mm in the north-south component, ±0.9 mm in the east-west component, and ±3.5 mm in the height. The averaged RMS precision for the station velocities is ±0.5 mm/a in the north-south component, ±0.8 mm/a in the east-west component, and ±1.6 mm/a in the vertical component. Results are available at https://doi.pangaea.de/10.1594/PANGAEA.863132.

When using SIR15P01 data, please always quote the following citation:

Sánchez, L; Drewes, H (2016): SIR15P01: Multiyear solution for the SIRGAS Reference Frame, doi: 10.1594/PANGAEA.862536, supplement to:
Sánchez L. Drewes H. (2016): Crustal deformation and surface kinematics after the 2010 earthquakes in Latin America. Journal of Geodynamics, doi: 10.1016/j.jog.2016.06.005


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