Japan Geoscience Union Meeting 2014

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Symbol S (Solid Earth Sciences) » S-GD Geodesy

[S-GD21_28AM1] Geodesy General Contributions

Mon. Apr 28, 2014 9:00 AM - 10:45 AM 413 (4F)

Convener:*Kazuhiro Takashima(Geospatial Information Authority of Japan, Ministry of Land, Infrastructure, Transport and Tourism), Takahito Kazama(Graduate School of Science, Kyoto University), Chair:Koji Matsuo(Graduate School of Science, Kyoto University), Tomoaki Furuya(Geospatial Information Authority of Japan)

10:30 AM - 10:45 AM

[SGD21-07] Notes on the quality of GEONET coordinate solutions

*Tetsuro IMAKIIRE1, Akira KAGAWA1, Yuki HATANAKA1, Hiroshi MUNEKANE1 (1.GSI of Japan)

Keywords:GEONET, GNSS positioning, Data quality

The routine solutions of geodetic coordinate of observation stations of GEONET, the continuous GNSS observation network operated by GSI, are fundamental data for the studies of crustal deformation and tectonics and widely utilized for a variety of purposes. As GEONET data is available freely, researchers can discuss the crustal deformation or tectonics without carrying out GNSS observation or baseline analysis. However, it should be noted that the coordinates provided by GEONET may include errors caused by various noise sources or factors, such as obstruction of observation signals by trees, multipath caused by site environment or um-modeled tropospheric noise. We present results of evaluation the effects of some of the error factors and introduce ways of examining the quality of coordinate solutions done for crustal deformation monitoring by GSI.