Which American astronomer later adopted and amplified Schiaparelli's systematic method for high-resolution surface study?

Answer

Percival Lowell

Schiaparelli established the methodology for high-resolution surface study, a method that others, such as the American astronomer Percival Lowell, would later adopt and amplify.

Which American astronomer later adopted and amplified Schiaparelli's systematic method for high-resolution surface study?
MarsSpaceastronomyobservationSchiaparelli