Analysis on Coseismic Response Characteristics and Seismic Recording Capacity of Water Level of Taodong Well in Yongchun, Fujian
QIN Shuanglong
LIAO Lixia
HONG Xuyu
ZHAO Wenbo
Abstract：Based on the digital water level data of Taodong well in Yongchun from 2004 to 2013, the paper analyzes the coseismic response, variation of well water level, change of seismic capacity and geological structural condition of well of Yongchun Taodong well. The results show that the coseismic response characteristics of well water are mainly the shock type, the shock-rise type and the ascending type, and the shock type is the main type; The coseismic variation of well water increases with the increase of magnitude, and decrease with the increase of well spacing, and there is a good correlation between the three; the well water appears high value phenomenon during 2006 and 2007, which may reflect the regional stress activity enhancement phenomenon in the period, and have a certain precursor nature; The seismic capacity of the well water has a signiflcant change after Yongchun M 4.6 earthquake on August 29th, 2007, that markedly enhance its seismic capacity. Focal mechanism solution show that the well was in compressive stress range when the earthquake occured. With the weakening of the compressive stress in the area of the well area, the tensile stress of the well-aquifer system is enhanced by the increase of the tensile stress, which enhances the seismic response of the aquifer.
Keywords：Water levelCoseismic changesYongchun Taodong WellShockSeismic capacity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 126-132 )