ZHU Shi-jun, KONG Ling-chang, QIAO Yong-jun, XV Lv-qing, ZHANG Hong-yu, BAI Chang-qing. IMPROVEMENT OF HELIUM GAS-COLLECTION INSTRUMENT AT YANQING SEISMIC STATION[J]. North China Earthquake Sciences, 2012, 30(2): 64-67.
Citation: ZHU Shi-jun, KONG Ling-chang, QIAO Yong-jun, XV Lv-qing, ZHANG Hong-yu, BAI Chang-qing. IMPROVEMENT OF HELIUM GAS-COLLECTION INSTRUMENT AT YANQING SEISMIC STATION[J]. North China Earthquake Sciences, 2012, 30(2): 64-67.
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IMPROVEMENT OF HELIUM GAS-COLLECTION INSTRUMENT AT YANQING SEISMIC STATION

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  • This article introduces the whole improvement of helium gas-collection instrument at Yanqing seismic station, including the parameter of the gas-collection instrument, the technical notes of the execution and the other matters needing attention.After the improvement, the quality of the helium data is improved obviously and day-value shows clear and regular form.
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