Response of Changes in Water Levels and Water Radon on the Observed Seismicity Along Longmenshan Fault

Friday, 19 December 2014
Anhua He, Institute of Crustal Dynamics, China Earthquake Administration, Beijing, China, Qing Ye, CENC China Earthquake Networks Center, Beijing, China and Ramesh P Singh, Chapman University, Orange, CA, United States
In China, numerous subsurface, water well and spring parameters are being monitored through a large network of stations distributed in China sponsored by China Earthquake Administration (CEA). All the data from these network is managed by China Earthquake Network Center (CENC). In this paper, we have used numerous data available through CENC for the period 2002-2014 to study the behavior and characteristics of water radon. The observed parameters were also complimented by the water level, and rainfall. Our detailed analysis shows increase in the level prior to the earthquake. The radon content, groundwater level and rainfall show a positive correlation prior to the Wenchuan and Lushan earthquakes. The water radon concentrations change from one location to other which may be associated with the changes in ground water regime due to changes in stress regime and observed seismicity. We have also used satellite data to retrieve CO concentrations from many locations along Longmenshan Fault. At some location, changes in CO, water level and water radon show complimentary characteristics.