Patent ID: 8190552

Claim:
A computer-implemented method of estimating a salt contamination comprising: preparing salt contamination data measured at a plurality of areas; preparing geographical factor data of each of the plurality of areas; preparing rainfall amount data near each of the plurality of areas; setting, using computer logic, a correlation expression for relating the prepared salt contamination data to the prepared geographical factor data and the prepared rainfall amount data at each of the plurality of areas; and estimating, using the correlation expression set using the computer logic, salt contamination of one of the plurality of areas based on a measured rainfall amount for one area, wherein the step of preparing the geographical factor data comprises: setting a plurality of measuring points by dividing sections from a salt contamination measuring position to a coastal direction; measuring an altitude and an inclined angle at each measuring position; understanding a present condition of a land use near the measuring position; and setting the altitude, the inclined angle and the present condition of the land use as a geographical factor.