The leveling measurements at Daixian station appeared increasing trend since March 25, 2013, which is credible, showing normal fault activity. According to the environmental survey, it contains some interference fact...The leveling measurements at Daixian station appeared increasing trend since March 25, 2013, which is credible, showing normal fault activity. According to the environmental survey, it contains some interference factors： first, the wind is big when the leveling measures in the afternoon, which has certain influence on the measurement results, but the impact is random and should be near the base value and not appear a trend. Second, the point BM3 was maintained during Sep. to Oct. in 2012 and occurred cracks in 2013, showing that the poor stability around the point. In addition, the change of recorded program is only to change the way of data record and can not affect the observation results during the same period.展开更多
基金supported by the National Natural Science Foundation of Shanxi Province(2014011035-1,2010011030-3)the Spark Program of Earthquake Technology of China Earthquake Administration(XH12007)The Key Scientific Research Projects of Earthquake Administration of Shanxi Province(SBK-1417,SBK-1525)
文摘The leveling measurements at Daixian station appeared increasing trend since March 25, 2013, which is credible, showing normal fault activity. According to the environmental survey, it contains some interference factors： first, the wind is big when the leveling measures in the afternoon, which has certain influence on the measurement results, but the impact is random and should be near the base value and not appear a trend. Second, the point BM3 was maintained during Sep. to Oct. in 2012 and occurred cracks in 2013, showing that the poor stability around the point. In addition, the change of recorded program is only to change the way of data record and can not affect the observation results during the same period.
