Principally the same thing as ABSTRACT EXPRESSIONISM applied with uniform, short IMPRESSIONIST like brush strokes.
Abstract impressionism is a type of abstract painting where brushstrokes exhibit control over emotion and focus on inner energy and contemplation, creating a lyrical and intellectual quality to the painting. Similar to the brushstrokes of Impressionists, such as Monet and Post-Impressionists such as Seurat. Where in the action painting style of Abstract expressionism, brushes were often dispensed with and paint was applied in a rapid outpouring of emotion and energy, the Abstract Impressionist's brushstrokes or non-traditional application of paints and textures is done slowly and with purpose, using the passage of time as a technique.