Different hydraulic responses to the 2008 Wenchuan and 2011 Tohoku earthquakes in two adjacent far-field wells: the effect of shales on aquifer lithology

Earth, Planets and Space

Table 1 Basic information about the Zuojiazhuang and Baodi wells

Station	Well diameter/mm	Well depth/m	Geological structure	2008 M _w 7.9 Wenchuan earthquake		2011 M _w 9.1 Tohoku earthquake
Station	Well diameter/mm	Well depth/m	Geological structure	Epicentral distance/km	Co-seismic water-level change/m	Epicentral distance/km	Co-seismic water-level change/m
Zuojiazhuang	160	2605	Next to the ‘Shunyi-Qianmen-Liangxiang’ fracture	1108.90	−1.917	1532.52	−1.858
Baodi	350	427.17	Intersection of Yanshan mountain alluvial plain and Jizhong hollow	1195.65	−0.046	1746.42	−0.0495

Well diameter, well depth, geological structure, epicentral distance, and co-seismic water-level change of the Zuojiazhuang and Baodi wells