Liu J.,Lanzhou Base of Insitiute of Earthquake Prediction |
Liu J.,Lanzhou National Observatory of Geophysics |
Du X.-B.,Lanzhou Base of Insitiute of Earthquake Prediction |
Du X.-B.,Lanzhou National Observatory of Geophysics |
And 6 more authors.
Earthquake | Year: 2015
This paper presents observational data of the 4 stations of surface and deep-well equipments which running time over 2 years at the same site and the same time period. By analyzing dynamic change of curves, observation accuracy and earthquake reflecting ability of the observed data, we concluded that (1) Deep borehole resistivity observation better restrain interferences of winding, raining and stray currents ground observation; (2) Annual variation amplitude of deep-well is different from surface resistivity observations and can greatly weaken the amplitude of annual variation; (3) Deep-well vertical observation data shows more frequently step offsets and sudden jumps relative to horizontal observation data; (4) Deep-well observation of Tianshui, Heyuan and Haian stations have good reflecting ability to earthquake nearby. ©, Science Press. All right reserved.