probability curves for seismic hazards (IMAGE) Arizona State University Caption The model shows earthquake probability curves for central Oklahoma increasing to 2015 due to brine injection. After injection is reduced and assumed to end in 2017, brine continues to diffuse in the rock, and the curves retreat to background levels. The new model allows operators to compute quake probability for various injection scenarios, maximizing injection while minimizing hazards. Credit Guang Zhai/ASU Usage Restrictions No restrictions when used in connection with reportage on this story. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.