差分GPS方法在城市活断层探测中的应用探讨

Abstract

Abstract: By using the method of differential GPS, on the basis of observing the features of the terraces in Huangshui basin, we have surveyed the parameters of the terraces in Huangshui basin, and primarily ascertained the characteristics of neo-tectonics in this region, and also found out the distribution and movement features of the active faults around Xining City. Through the research described above, we draw a conclusion as follows: by using the DGPS, the coordinate and elevation of the terraces can be quickly and accurately acquired; so the DGPS is a feasible way to find the positions and other features of weak active or concealed faults. T₃, T₄, T₅ terraces is dislocated by Nan chuan river fault between 0.10 Ma B.P. and 0.05 Ma B.P. with the least velocity of 0.15 mm/a.

Key words: DGPS, Active faults, Terraces, Xining City

CLC Number:

P315.2

ZHANG Jun-long, TIAN Qin-jian, LI Zhi-min, Ren Zhi-kun, HAO Kai. Use of differential GPS in detecting active faults in cities[J]. EARTHQUAKE, 2007, 27(3): 74-82.

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Use of differential GPS in detecting active faults in cities

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