Crustal deformation state shown by fault measurement and GPS

In Capital area of China, many faultdeformational surveying sites were set up sequentiallyfrom 1967. With short leveling, short base line andshort ranging net across fault, a lot of data havebeen accumulated. In 1992, GPS (Global PositioningSystem) measurements were started in China. Two timesof GPS...

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Bibliographic Details
Published in:Journal of seismology 2000-07, Vol.4 (3), p.259-266
Main Authors: Bo, Wanju, Li, Yanxing, Yang, Guohua, Xie, Juemin, Guo, Liangqian, Hu, Xinkang, Zhao, Chengkun, Wang, Min
Format: Article
Language:English
Subjects:
Data processing
Earth sciences
Earth, ocean, space
Earthquakes
Earthquakes, seismology
Environmental risk
Exact sciences and technology
Global positioning systems
GPS
Internal geophysics
Seismic activity
Seismology
Tectonics. Structural geology. Plate tectonics
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Summary:In Capital area of China, many faultdeformational surveying sites were set up sequentiallyfrom 1967. With short leveling, short base line andshort ranging net across fault, a lot of data havebeen accumulated. In 1992, GPS (Global PositioningSystem) measurements were started in China. Two timesof GPS measurements have been made in 1992 and 1995respectively. The International Terrestrial ReferenceFrame 93 and the Precision Ephemeris provided byInternational GPS Geodynamics Service (IGS) fromGlobal GPS tracing network solution are used. In GPSanalysis and data processing, GAMIT software and GLOBKsoftware are used. The results from these two kinds ofdata are discussed. For earthquake risk area judgment,it is of interest to know where is compressional areaand where is tensional area, and generally thecompressional areas are considered as risk area andcalled abnormal area. All the data from shortleveling, short ranging (measured bylaser-range-finder), short base line (measured by baseline tape) and GPS methods can give us the descriptionabout the deformational state of the crust -compressional state or tensional state. The comparisonshows that, some of the two kinds of data areconsistent, a few of them are contradictory, and thenthe results are discussed.[PUBLICATION ABSTRACT]
ISSN:1383-4649
1573-157X
DOI:10.1023/A:1009811317929