Recent Global and Regional Studies Using GPS. A Brief Overview.

概要

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Recent global campaigns, such as GIG'91, demonstrated that GPS is attaining a similar accuracy as VLBI or SLR in determining station coordinates and earth rotation parameters. Given this development together with economical merits, GPS will soon be used as a powerful tool for studying global geodesy and geodynamics. Examples are; monitoring sea level rise, establishing and maintaining the conventional terrestrial frame, monitoring global plate motions, studying dynamics in fluctuations of earth's rotation etc. International GPS Geodynamics Service (IGS), which is the voluntary organization under JAG, will play a key role for these studies. When this organization is operational and its products are readily available for local and regional users, geodetic and geophysical studies of regional scales with GPS will also rapidly advance. As well as other regional campaigns, GPS JAPAN is one of such efforts that has been coordinated in Japan with the aid from surrounding countries. GPS JAPAN targets to facilitate studies of the regional scale problems such as finer tectonics at plate boundaries, local crustal deformation monitoring related to seismic and volcanic activities and so on, by densifying the regional networks around the Japanese core sites and thereby materializing the regional orbit improvements.
日本測地学会の論文