A New Continuous GPS Network of the Geological Survey of Japan, AIST

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  • 産総研地質調査総合センターにおける新GPS連続観測システム
  • サン ソウケン チシツ チョウサ ソウゴウ センター ニ オケル シン GPS レンゾク カンソク システム

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    We installed six new continuous GPS observation stations in Shikoku and Kii Peninsula at new groundwater observation sites from 2007 and 2008. In addition, we replaced old GPS stations with new ones so that all the GPS stations consist of the same type of Trimble GPS antenna and receiver. We also switched the GPS data analysis software to the Bernese GPS software. In the new data analysis system, we include GPS data from GEONET stations around the AIST stations. It is found that the new system provides the improvement of repeatability of GPS station displacement compared to the old one. The new system also enables to calculate strain time series using GPS daily position data, which is helpful for comparison with that observed by strainmeters installed at most of the AIST GPS stations.

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