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ACP - atmospheric chemical potential

Atmospheric Chemical Potential (ACP) is related to radon emissions and is used in our technology as a short-term earthquake precursor and evaluation of the shear traction field. Before most large earthquakes, the ACP reaches the absolute maximum up to 15 days before the actual event, followed by a sharp drop of its magnitude 0-3 days before an earthquake. The spatial size of the observed ACP anomaly also allows for earthquake magnitude estimation, while the position of the anomaly center allows for better epicentral estimation. 

The ACP trends are highly correlated to the shear traction produced by the tectonic waves. 

The model has a resolution equal to 0.2 degrees. The range of possible values of ACP changes through time.

Read more about the LAIC here.