MA Guang-qing, LI Xiang-ping, ZHAO Chang-hong, AN Hai-sheng, ZHANG Hai-liang, JIANG Yong-jian, Wang Wei. COMPARISON TO THE DIGITAL AND ANALOGUE OBSERVATIONAL DATA OF EXTENSOMETER IN SHEXIAN SEISMOSTATION[J]. North China Earthquake Sciences, 2005, 23(4): 36-39.
Citation: MA Guang-qing, LI Xiang-ping, ZHAO Chang-hong, AN Hai-sheng, ZHANG Hai-liang, JIANG Yong-jian, Wang Wei. COMPARISON TO THE DIGITAL AND ANALOGUE OBSERVATIONAL DATA OF EXTENSOMETER IN SHEXIAN SEISMOSTATION[J]. North China Earthquake Sciences, 2005, 23(4): 36-39.
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COMPARISON TO THE DIGITAL AND ANALOGUE OBSERVATIONAL DATA OF EXTENSOMETER IN SHEXIAN SEISMOSTATION

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  • The observational data of extensometer(NS:short baseline;EW:long baseline) observed in Shexian Seismostation before and after reconstruction are compared and analyzed in the field of inherent precision, tidal factor and error, annual drifting and calibration repeat accuracy.The results show that SS-Y extensometer with 10~15m baseline can basically meet the need of observation in cave room, and is superior to long baseline in some aspects, so some stations that their cave is not long can consider to install this type extensometer.
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