Co-seismic responses of water wells in Jiangsu province to 2008 Wenchuan and 2011 Japan earthquakes

:Co-seismic water-level and temperature changes of the 2008 magnitude – 8.0 Wenchuan and the 2011 magnitude − 9.0 Japan earthquakes recorded at 10 observation wells in Jiangsu province are presented and analyzed. The data show that water level responded more regularly with earthquake magnitude and distance than water temperature. The response was different for wells located in different tectonic units, being weaker in central and northern plain, which has a relatively thick surface layer of loess, than southern Jiangsu, which is hilly.